To see the other types of publications on this topic, follow the link: FCC based UWB communication.
Journal articles on the topic 'FCC based UWB communication'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'FCC based UWB communication.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
PRIYANKA, GARGADE. "A SURVEY ANALYSIS ON COMPACT UWB CIRCULAR MONOPOLE ANTENNA WITH MULTIPLE NOTCHED BANDS." IJIERT - International Journal of Innovations in Engineering Research and Technology 4, no. 2 (2017): 49–53. https://doi.org/10.5281/zenodo.1462263.
Full textAbstract:
<strong><strong> </strong>Evolution in high speed wireless communication technology triggers the necessity for wide band antennas in portable devices. Federal communication commission (FCC) has authorized 3.1 GHz to 10.6 GHz for ultra wide band applications and is considered as eminent solution for emerging wireless technology due to its enticing merits like high data rate,jamming resistance and improved throughput capabilities. In recent years,ultra wide band (UWB) system has been required for many applications because of its plenty of advantages,such as low complexity and low cost,resistant to severe multipath and jamming,etc. The increased growth of wireless technology has motivated researchers to design antennas. Ultra wide band (UWB) technologies have become very attractive due to the numerous advantages such as gigabit/second - level data rate,high security,and low cost. Interference between ultra wide band (UWB) antennas and other narrow band systems have spurred growth in designing UWB antennas with notch characteristics. Most of these UWB antennas are designed to meet the UWB specification and are suitable for practical implementation.</strong> <strong>https://www.ijiert.org/paper-details?paper_id=141000</strong>
2
Dridi, Kais, and Habib Hamam. "All-Optical Fiber Interferometer-Based Methods for Ultra-Wideband Signal Generation." Journal of Electrical and Computer Engineering 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/314872.
Full textAbstract:
We report two new, simple, and cost-effective all-optical methods to generate ultra-wideband (UWB) impulse radio signals. The proposed methods are based on fiber-interferometric structures, where an input pulse is split and propagates along the two interferometer arms. The interference of these pulses at the output of the interferometer leads to UWB pulse generation. A theoretical analysis is provided and some relevant simulation results are presented. Large bandwidths are obtained while satisfying the requirements of the Federal Communication Commission (FCC). With these two techniques, UWB pulses can be readily generated and cost-effectively propagated through optical fibers.
3
Nursal, Firdaus, Rahmadi Kurnia, and Ikhwana Elfitri. "Ultra Wideband (UWB) Multiple Input and Multiple Output (MIMO) Antenna Design : A Review." Andalas Journal of Electrical and Electronic Engineering Technology 3, no. 1 (2023): 35–43. http://dx.doi.org/10.25077/ajeeet.v3i1.33.
Full textAbstract:
Since the Federal Communication Commission (FCC) issued a license for the 3.1 – 10.6 GHz frequency spectrum for unlicensed radio applications, many papers have been published regarding ultrawideband (UWB) antenna design. The issue of UWB antenna design is determining how to create an antenna with a wide bandwidth, capable of rejecting communication systems that coexist with UWB bands, and capable of designing UWB antennas for multiple input multiple output (MIMO) communication system applications. This study examines the design of UWB antennas with monopole and slot types based on evaluations published over the last two decades. The discussion began with UWB and MIMO systems and then moved on to the configuration of monopole and slot UWB antennas. UWB antenna layout with notched bands and the several types of notched bands available. Finally, two port and quad-port MIMO antenna configuration is examined. To further understand UWB antenna design, numerous UWB antenna configurations are simulated. The outcomes of this review can be utilized as preliminary reading material for researchers looking into UWB antennas.
4
Barraj, Imen, Amel Neifar, Hassen Mestiri, and Mohamed Masmoudi. "Reconfigurable Memristive Pulse Generator Based on Pulse Shaping for Ultra Wideband Communication." Engineering, Technology & Applied Science Research 15, no. 2 (2025): 20668–73. https://doi.org/10.48084/etasr.9771.
Full textAbstract:
This paper presents a novel reconfigurable memristive Pulse Generator (PG) designed for Ultra-Wideband (UWB) applications, leveraging the advanced pulse shaping techniques. The proposed design aims to improve the efficiency and flexibility of UWB communication systems, thereby contributing to the achievement of the "Sustainable Development Goal 9: Industry, Innovation, and Infrastructure" by promoting technological advances in the field of communications. The design utilizes the CMOS 0.18 µm technology operating at 1.8 V to achieve high performance and low power consumption. By employing constant resistance and dynamic resistance modulation, the proposed PG supports various modulation schemes, including Frequency-Shift Keying (FSK) and On-Off Keying (OOK), enhancing its adaptability and efficiency. The transmitter demonstrates significant energy efficiency with a low-duty cycle impulse approach, operating within the lower UWB band (3-5 GHz) to minimize interference. The simulation results indicate that the UWB generator achieves high data rates and improved spectral efficiency while maintaining compliance with the FCC regulations. This makes it ideal for integration into IoT devices, wearable technology, and other battery-powered applications. Therefore, the proposed design has the potential to enhance connectivity and data transmission capabilities, ultimately supporting the development of more efficient and reliable communication networks worldwide.
5
Gao, Mingming, Xueman Zhang, Xitao Chen, and Jingchang Nan. "Design of double-notch UWB filter with upper stopband characteristics based on ACPW-DGS." PLOS ONE 18, no. 2 (2023): e0282060. http://dx.doi.org/10.1371/journal.pone.0282060.
Full textAbstract:
In this manuscript, a compact (size only 9.8mm*9.8mm) Ultra Wide Band (UWB) bandpass filter with a new structure is proposed, which can be used in the UWB wireless communication band authorized by the FCC. The top plane is composed of a pair of back-to-back microstrip lines, and the ground plane structure is based on an asymmetric coplanar waveguide-defect ground structure (ACPW-DGS). UWB is formed by the vertical electromagnetic coupling of the top plane and the ground plane. On this basis, split ring resonator (SRR) and C type resonator (CTR) are utilized to place double notch bands. A novel third order nested C-type resonator (TONCTR) is obtained by performing CTR, which can further optimize the upper stopband while ensuring double notch bands. The filter can be used for filtering within the UWB system, and it can also avoid the amateur radio band (9.2 -10.3GHz) and the X-band satellite link band (9.6-12.3GHz) on UWB communication systems. Finally, the measured results from the fabricated prototype are basically consistent with the simulation results.
6
Sun, Qiu Ming, Feng Tian, and Yan Jun Zhang. "Surface Acoustic Wave Based Radio Frequency Identification." Advanced Materials Research 490-495 (March 2012): 1802–6. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.1802.
Full textAbstract:
In this paper, a novel SAW RFID tag based on UWB chirp spread spectrum theory was proposed. The tag designation is in accordance with FCC standards of UWB wireless communications. The combination of UWB for SAW RFID has the characteristic of short delay due to large bandwidth and low energy required for the reader. Moreover, the encoding and detection for UWB SAW tag, which replaced the universally employed pulse position and on/off encoding methods in SAW tags with its central frequency of 2.45GHz and bandwidth of 82.5MHz, offers an effective way for multi-access SAW RFID tag system. Implementation of UWB CSS SAW RFID tag was demonstrated.
7
Kumar, V. Vinod, and M. Meenakshi. "Tunable Low Power UWB Transmitter for WBAN Application." Journal of Circuits, Systems and Computers 24, no. 03 (2015): 1550040. http://dx.doi.org/10.1142/s0218126615500401.
Full textAbstract:
This paper presents the design and simulation results for a Federal Communication Committee (FCC) complaint current starved delay line based Ultra Wide Band (UWB) Gaussian pulse transmitter, which is designed for operating in the 3.1–10.6 GHz range. The wavelet is a mono cycle Gaussian impulse wave, which is practically well suited for low cost, low power, low data rate wireless data transfer such as in wireless body area network (WBAN) applications. The transmitter operating frequency and bandwidth (BW) is controlled using a dc voltage provided at the input stage of a voltage controlled delay line (VCDL) and this aspect can be exploited for increasing the communication coverage area without compromising on the power consumption. A Gaussian wave shaping is performed for FCC compliance and the simulation has been carried out with 130 nm technology. The simulation of our design suggests an average dynamic power consumption of 1.11 mw for an energy efficiency of 14.2 pJ/pulse. The proposed IR-UWB transmitter design though a bit inferior in terms of the power efficiency, can claim superior performance with respect to tuning the BW, which is very relevant in a cognitive wireless networking scenario with other interfering signals.
8
Rashid, Nasr, and Mohamed Shehata. "Ultra-wide band energy harvesting for ultra-low power electronics applications." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 2 (2021): 1158. http://dx.doi.org/10.11591/ijece.v11i2.pp1158-1165.
Full textAbstract:
In this work, the feasibility of energy harvesting in the useful UWB band (i.e., 3.1-10.6 GHz) is analytically investigated. A typical UWB communications/EH chain in this band is modeled and analyzed, considering the spectral constraints imposed by the federal communications commission (FCC) to UWB signaling. Based on the developed model, accurate analytical expressions are derived for the average received powers of two common types of impulse radio UWB (IR-UWB) signaling waveforms. Numerical simulations on the system-level show excellent agreement with the obtained analytical expressions. Moreover, the DC power levels expected from spectrally constrained IR-UWB waveforms are extremely low (less than 0.3 microwatt) and, accordingly, provide useful guidelines for the design and development of ULP electronics applications in the sub-microwatt range.
9
Nasr, Rashid, and Shehata Mohamed. "Ultra-wide band energy harvesting for ultra-low power electronics applications." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 2 (2021): 1158–65. https://doi.org/10.11591/ijece.v11i2.pp1158-1165.
Full textAbstract:
In this work, the feasibility of energy harvesting in the useful UWB band (i.e., 3.1-10.6 GHz) is analytically investigated. A typical UWB communications/EH chain in this band is modeled and analyzed, considering the spectral constraints imposed by the federal communications commission (FCC) to UWB signaling. Based on the developed model, accurate analytical expressions are derived for the average received powers of two common types of impulse radio UWB (IR-UWB) signaling waveforms. Numerical simulations on the system-level show excellent agreement with the obtained analytical expressions. Moreo ver, the DC power levels expected from spectrally constrained IR-UWB waveforms are extremely low (less than 0.3 microwatt) and, accordingly, provide useful guidelines for the design and development of ULP electronics applications in the sub-microwatt range.
10
Srivastava, Saurabh, and O. P. Sahu. "Filter Bank Based Notch Filter for Interference Cancellation in UWB Systems." International Journal of Advance Research and Innovation 2, no. 2 (2014): 85–95. http://dx.doi.org/10.51976/ijari.221413.
Full textAbstract:
The primary concern of any communication engineer is the bandwidth of the transmitted or received signal and the noise encountered during the transmission reception process. We analyze the effects of narrowband interference in Multicarrier UWB systems such as short distance IEEE 802.11a system. It is known that the process of narrowband interference cancellation is quite complex especially for ultra-wideband systems due to their power spectral density as low as -41dBm/MHz recommendations by the FCC. We review the model for narrow band interference and use the statistical property of correlation to determine the interference power spectral density. We review the sub band processing of UWB signals and apply notch filtering after measuring the threshold to eliminate the interference. We propose a novel mechanism for generation of the required notch filter using the sub band signals generated after the sub band decomposition of the UWB signal using filter banks. The proposed mechanism may be applied in conjunction with the other filter bank based multicarrier systems that have the advantage of better side-band attenuation of signals than commonly used OFDM system.
11
Navitha, Ch, K. Sivani, and K. Ashoka Reddy. "Performance Evaluation of Adaptive Continuous Wavelet Transform based Rake Receiver for UWB Systems." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 5 (2018): 3444. http://dx.doi.org/10.11591/ijece.v8i5.pp3444-3452.
Full textAbstract:
This paper proposes an adaptive continuous wavelet transform (ACWT) based Rake receiver to mitigate interference for high speed ultra wideband (UWB) transmission. The major parts of the receiver are least mean square (LMS) adaptive equalizer and N-selective maximum ratio combiner (MRC). The main advantage of using continuous wavelet rake receiver is that it utilizes the maximum bandwidth (7.5GHz) of the UWB transmitted signal, as announced by the Federal Communication Commission (FCC). In the proposed ACWT Rake receiver, the weights and the finger positions are updated depending upon the convergence error over a period in which training data is transmitted. Line of sight (LOS) channel model (CM1 from 0 to 4 meters) and the Non line of sight (NLOS) channel models (CM, CM3 and CM4) are the indoor channel models selected for investigating in this research . The performance of the proposed adaptive system is evaluated by comparing with conventional rake and continuous wavelet transform (CWT) based rake. It showed an improved performance in all the different UWB channels (CM1 to CM4) for rake fingers of 2, 4 and 8. Simulations showed that for 8 rake fingers, the proposed adaptive CWT rake receiver has shown an SNR improvement of 2dB, 3dB, 10dB and 2dB respectively over CWT rake receiver in different UWB channels CM1, CM2, CM3 and CM4.
12
Ch., Navitha, Sivani K., and Ashoka Reddy K. "Performance Evaluation of Adaptive Continuous Wavelet Transform based Rake Receiver for UWB Systems." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 5 (2018): 3444–52. https://doi.org/10.11591/ijece.v8i5.pp3444-3452.
Full textAbstract:
This paper proposes an adaptive continuous wavelet transform (ACWT) based Rake receiver to mitigate interference for high speed ultra wideband (UWB) transmission. The major parts of the receiver are least mean square (LMS) adaptive equalizer and N-selective maximum ratio combiner (MRC). The main advantage of using continuous wavelet rake receiver is that it utilizes the maximum bandwidth (7.5GHz) of the UWB transmitted signal, as announced by the Federal Communication Commission (FCC). In the proposed ACWT Rake receiver, the weights and the finger positions are updated depending upon the convergence error over a period in which training data is transmitted. Line of sight (LOS) channel model (CM1 from 0 to 4 meters) and the Non line of sight (NLOS) channel models (CM, CM3 and CM4) are the indoor channel models selected for investigating in this research . The performance of the proposed adaptive system is evaluated by comparing with conventional rake and continuous wavelet transform (CWT) based rake. It showed an improved performance in all the different UWB channels (CM1 to CM4) for rake fingers of 2, 4 and 8. Simulations showed that for 8 rake fingers, the proposed adaptive CWT rake receiver has shown an SNR improvement of 2dB, 3dB, 10dB and 2dB respectively over CWT rake receiver in different UWB channels CM1, CM2, CM3 and CM4.
13
He, Xue Wen, Sun Han, Kuan Gang Fan, Ying Fei Sheng, and Qing Mei Cao. "Design and Research on Optimization Combination of UWB Pulse Waveform Based on Gaussian Pulse Derived Function." Applied Mechanics and Materials 427-429 (September 2013): 1995–98. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.1995.
Full textAbstract:
This paper analyses time-domain waveform and its unilateral energy spectral density based on the Gaussian pulse former 12 derivative functions. We could conclude that pulse forming factor has a closer relationship with different order number derived function affected the energy spectral density. Therefore, in order to maximize the approximate Federal Communications Commission (FCC) emission mask as much as possible, an iterative algorithm is proposed to optimize the linear combination of the Gaussian pulse former 12 order derived function. Compared with single differential Gaussian pulse, the simulation results show that after linear combination, new ultra-wideband pulse signal could greatly meet the spectrum utilization and indoor radiation mask standards promulgated by the FCC.
14
Lukacs, Peter, Alena Pietrikova, Igor Vehec, and Peter Provazek. "Influence of Various Technologies on the Quality of Ultra-Wideband Antenna on a Polymeric Substrate." Polymers 14, no. 3 (2022): 507. http://dx.doi.org/10.3390/polym14030507.
Full textAbstract:
The design, simulation, realization, and measurement of an ultra-wideband (UWB) antenna on a polymeric substrate have been realized. The UWB antenna was prepared using conventional technology, such as copper etching; inkjet printing, which is regarded as a modern and progressive nano-technology; and polymer thick-film technology in the context of screen-printing technology. The thick-film technology-based UWB antenna has a bandwidth of 3.8 GHz, with a central frequency of 9 GHz, and a frequency range of 6.6 to 10.4 GHz. In addition to a comparison of the technologies described, the results show that the mesh of the screens has a significant impact on the quality of the UWB antenna when utilizing polymeric screen-printing pastes. Last but not least, the eco-friendly combination of polyimide substrate and graphene-based screen-printing paste is thoroughly detailed. From 5 to 9.42 GHz, the graphene-based UWB antenna achieved a bandwidth of 4.42 GHz. The designed and realized UWB antenna well exceeds the Federal Communications Commission’s (FCC) standards for UWB antenna definition. The modification of the energy surface of the polyimide substrate by plasma treatment is also explained in this paper, in addition to the many types of screen-printing pastes and technologies. According to the findings, plasma treatment improved the bandwidth of UWB antennas to 5.45 GHz, and the combination of plasma treatment with graphene provides a suitable replacement for traditional etching technologies. The characteristics of graphene-based pastes can also be altered by plasma treatment in terms of their usability on flexible substrates.
15
Ben Issa, Dalenda, and Mounir Samet. "Design and Optimization of Dual-Band Energy-Efficient OOK UWB Transmitter Via PSO Algorithm." Journal of Circuits, Systems and Computers 29, no. 11 (2020): 2030009. http://dx.doi.org/10.1142/s0218126620300093.
Full textAbstract:
A CMOS ON–OFF-keying 3–10.6-GHz transmitter with low power consumption and low complexity used to Impulse Radio Ultra-Wide Band (IR-UWB) communication system is presented in this work. This architecture is designed and optimized via particle swarm optimization (PSO) algorithm. The IR-UWB transmitter is adapted to generate a high bandwidth frequency and it has a band switching capability. It consists of a switching inductance–capacitance voltage-controlled oscillator (LC_VCO), a pulse generator circuit, an injection-locked frequency divider (ILFD) circuit, a buffer and an antenna. The VCO is switched ON/OFF by the pulse signal produced by a generator circuit which is realized through synchronizing the received data by a clock signal. The used technique for transmitting a discontinuous signal is based on a complementary switch-mode ON–OFF LC_VCO, whose main advantage is to reduce power consumption. In this work, a best agreement between the results of the optimization technique and those of the simulation is obtained. The simulated results illustrate a signal of pulse width of 2.5 ns and a pulse repetition rate (PRR) of 200 MHz. The output spectra are centered at 4-GHz and 8-GHz frequencies with 1,332-MHz and 1,350-MHz bandwidths, respectively. The peak-to-peak amplitude of a UWB signal output is 154[Formula: see text]mV. The IR-UWB transmitter power consumption is 11.4[Formula: see text]mW which corresponds to the consumption energy of 28.5 pJ/pulse @ 200[Formula: see text]MHz. The power spectral densities (PSDs) of the output signals of both circuits viz. ON–OFF LC_VCO and ILFD are less than [Formula: see text][Formula: see text]dBm/MHz, which agreed well with the Federal Communication Commission (FCC) regulation. The transmitter design is well implemented using a TSMC 0.18-[Formula: see text]m CMOS process technology in an Advanced Design System (ADS).
16
Mahbub, Ifana, Samira Shamsir, and Syed K. Islam. "A Low-Power Low-Data Rate Impulse Radio Ultra-Wideband (IR-UWB) Transmitter." International Journal of High Speed Electronics and Systems 26, no. 03 (2017): 1740013. http://dx.doi.org/10.1142/s0129156417400134.
Full textAbstract:
A low-power and low-data-rate (100 kbps) fully integrated CMOS impulse radio ultra-wideband (IR-UWB) transmitter for biomedical application is presented in this paper. The transmitter is designed using a standard 180-nm CMOS technology that operates at the 3.1-5 GHz frequency range with more than 500 MHz of channel bandwidth. Modulation scheme of this transmitter is based on on-off keying (OOK) in which a short pulse represents binary “1” and absence of a pulse represents binary “0” transmission. During the ‘off’ state (sleep mode) the transmitter consumes only 0.4 μW of power for an operating voltage of 1.8 V while during the impulse transmission state it consumes a power of 36.29 μW. A pulse duration of about 3.5 ns and a peak amplitude of the frequency spectrum of about -47.8 dBm/MHz are obtained in the simulation result which fully complies with Federal Communication Commission (FCC) regulation.
17
Pandey, Utkarsh, Parulpreet Singh, Raghvendra Singh, Narbada Prasad Gupta, Sandeep Kumar Arora, and Eric Nizeyimana. "Miniaturized Ultrawideband Microstrip Antenna for IoT-Based Wireless Body Area Network Applications." Wireless Communications and Mobile Computing 2023 (May 4, 2023): 1–19. http://dx.doi.org/10.1155/2023/3950769.
Full textAbstract:
In this paper, we present an extremely compact ultrawideband (UWB) monopole microstrip patch antenna for a wireless body area network (WBAN). The proposed antenna is fabricated on a flexible Rogers RT-5880 dielectric substrate of thickness 0.5 mm and has an overall size of 20 × 15 × 0.5 m m 3 . The proposed antenna achieves a wideband characteristic with the help of a modified ground plane with a monopole pair. The monopole antenna is fed through a microstrip line and has a good impedance matching over a frequency band of 3.2 to 15 GHz (and beyond), with an axial ratio below 3 dB and a high efficiency of 77–95%. This antenna is designed to cover almost the complete UWB range; bandwidth for antenna is 11.52 GHz (3.48-15 GHz). The antenna has a realized gain of 2.3–7.2 dBi throughout the frequency band and has been tested for conformality. Measured results are found to be in good correlation with the simulated results. The antenna has also been tested for specific absorption rate (SAR) values within the simulation to compare with Federal Communications Commission (FCC) limits and verify their suitability for the Internet of Things- (IoT-) based wearable body area network.
18
Akram, El Hamdouni, Tajmouati Abdelali, Zbito Jamal, Tribak Abdelwahed, and Latrach Mohamed. "Novel fractal antenna for UWB applications using the coplanar waveguide feed line." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 4 (2019): 3115–20. https://doi.org/10.11591/ijece.v9i4.pp3115-3120.
Full textAbstract:
In this study an original Coplanar Waveguide (CPW) antenna has been achieved into simulation and manufacturing in order to be an important candidate for the Ultra-wideband applications. The area of the proposed structure is 34mmx43mm operating in the frequency range 3.1–10.6 GHz released as UWB by the Federal Communications Commission (FCC). To perform the design of the proposed CPW antenna two electromagnetic solvers has been adopted which are CST of Microwave Studio and ADS of Agilent. The radiating patch has been chosen circular with fractal geometry based on circular slots with different sizes. The dielectric substrate is an Epoxy FR4 with a Relative permittivity 4.4, a thickness 1.6 and a loss tangent 0.025. To valid the functionality of the antenna two parameters has been computed which are the coefficient of reflection and the radiation pattern and confirmed into measurement by using the Network Analyser and the anechoic chamber.
19
Hamdouni, Akram El, Abdelali Tajmouati, Jamal Zbito, Abdelwahed Tribak, and Mohamed Latrach. "Novel fractal antenna for UWB applications using the coplanar waveguide feed line." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 4 (2019): 3115. http://dx.doi.org/10.11591/ijece.v9i4.pp3115-3120.
Full textAbstract:
In this study an original Coplanar Waveguide (CPW) antenna has been achieved into simulation and manufacturing in order to be an important candidate for the Ultra-wideband applications. The area of the proposed structure is 34mm x 43mm operating in the frequency range 3.1 GHz – 10.6 GHz released as UWB by the Federal Communications Commission (FCC). To perform the design of the proposed CPW antenna two electromagnetic solvers has been adopted which are CST of Microwave Studio and ADS of Agilent. The radiating patch has been chosen circular with fractal geometry based on circular slots with different sizes. The dielectric substrate is an Epoxy FR4 with a Relative permittivity 4.4, a thickness 1.6 and a loss tangent 0.025. To valid the functionality of the antenna two parameters has been computed which are the coefficient of reflection and the radiation pattern and confirmed into measurement by using the Network Analyser and the anechoic chamber.
20
Alam, Jahangir, Maher Khaliel, Abdelfattah Fawky, Ahmed El-Awamry, and Thomas Kaiser. "Frequency-Coded Chipless RFID Tags: Notch Model, Detection, Angular Orientation, and Coverage Measurements." Sensors 20, no. 7 (2020): 1843. http://dx.doi.org/10.3390/s20071843.
Full textAbstract:
This paper focuses on the frequency coded chipless Radio Frequency Identification (RFID) wherein the tag’s information bits are physically encoded by the resonators’ notch position which has an effect on the frequency spectrum of the backscattered or retransmitted signal of the tag. In this regard, the notch analytical model is developed to consider the notch position and quality factor. Besides, the radar cross section (RCS) mathematical representation of the tag is introduced to consider the incident wave’s polarization and orientation angles. Hence, the influences of the incident wave’s orientation and polarization mismatches on the detection performance are quantified. After that, the tag measurement errors and limitations are comprehensively explained. Therefore, approaches to measureing RCS- and retransmission-based tags are introduced. Furthermore, the maximum reading range is theoretically calculated and practically verified considering the Federal Communications Commission (FCC) Ultra Wideband (UWB) regulations. In all simulations and experiments conducted, a mono-static configuration is considered, in which one antenna is utilized for transmission and reception.
21
Kumari, Sakshi, and Vibha Rani Gupta. "Super Ultrawideband Planar Inverted F Antenna on Paper based Substrate with Low SAR." ECTI Transactions on Electrical Engineering, Electronics, and Communications 17, no. 2 (2019): 204–13. http://dx.doi.org/10.37936/ecti-eec.2019172.225337.
Full textAbstract:
In this paper, a super ultrawide band planar inverted F antenna (PIFA) has been proposed for wearable applications on a low cost, ecofriendly paper-based substrate. This work is a first and important step towards the progression of conformal flexible antennas for a body area network. The proposed antenna has measured impedance bandwidth of 10.6 GHz, which covers almost all the bands of a wireless body area network i.e. GSM (880-960 MHz), GPS (1565-1585 MHz), DCS (1710-1880 MHz), PCS (1850-1990 MHz), UMTS (1920-2170 MHz), ISM (2.4-2.4835 GHz), WiMAX (3.3-3.8 GHz), HIPERLAN (5.15-5.35 GHz), WLAN (5.725-5.850 GHz) and UWB (3.1-10.6 GHz). Initially, the electrical characteristics of paper are extracted using Cavity Resonator and Transmission line method and then used for the design and fabrication of the proposed antenna. The measured results are in good agreement with the simulated results. This paper also focuses on analysis of the effect of electromagnetic absorption in terms of specific absorption rate for a human arm with frequency exposure at 0.9 GHz, 1.5 GHz, 1.8 GHz, 3.5 GHz, 2.45 GHz, 5.2 GHz and 5.8 GHz and is found to be within the recommended limit by FCC.
22
Firdaus, Afrizal Yuhanef, Yulindon Yulindon, Dwiny Meidelfi, and Meza Silvana. "The Small UWB Monopole Antenna with Stable Omnidirectional Radiation Pattern." JOIV : International Journal on Informatics Visualization 6, no. 4 (2022): 815. http://dx.doi.org/10.30630/joiv.6.4.972.
Full textAbstract:
Ultra Wideband (UWB) technology is an unmodulated wireless digital communication system that uses an extremely short duration pulse to transmit information bit. Because of this pulse, the UWB system needs a very wide bandwidth. Federal Communication Commission (FCC) has regulated the 3.1 – 10.6 GHz frequency spectrum for UWB. Since FCC released this frequency, many research in telecommunication have been done on UWB systems. One of them is a development of an Antenna that is suitable for UWB devices. UWB antenna characteristics require FCC band, omnidirectional radiation pattern, and compact size. In order to meet these needs, an antenna with a simple structure in the form of a monopole patch antenna with a similar patch size and ground width has been designed. The antenna is built on an FR4 – epoxy substrate material, with 4.4 dielectric constant and 1.6 mm thickness. The antenna feeding structure consists of two 100 Ω and 50 Ω lines with a wideband impedance matching scheme using tapered side and tapered transformers. The antenna design and optimization processes are conducted using electromagnetic simulation software, and measurements are carried out in an anechoic chamber. Simulation and measurement results show good agreement, and the antenna can work at frequencies 3.5 - 11.3 GHz with a gain of 1.5 – 3.25 dBi and stable omnidirectional radiation patterns. The antenna has dimensions of 27 × 8 × 1.6 mm, which are smaller than the antenna reported in the last research and suitable to be applied on various UWB devices.
23
Park, Kwang, Jeungmin Joo, Sungsoo Choi, and Kiseon Kim. "EFFECTS OF TIMING JITTER IN TH-BPSK UWB SYSTEMS APPLYING THE FCC-CONSTRAINT PULSES UNDER NAKAGAMI-M FADING CHANNEL." SYNCHROINFO JOURNAL 7, no. 6 (2021): 21–25. http://dx.doi.org/10.36724/2664-066x-2021-7-6-21-25.
Full textAbstract:
Ultra wideband (UWB) technology has obtained lots of attention as a strong candidate for short range indoor wireless communication because of low power consumption, low cost implementation and the robustness against multipath fading. It uses trains of short pulses which widely spread the signal energy in frequency domain. Since such large bandwidth can cause interference with other narrow band communication systems, the federal communications commission (FCC) has restricted not only the frequency region from 3.1GHz to 10.6GHz but also the transmission power level for commercial use of UWB systems. The effects of timing jitter on time hopping binary phase shift keying (TH-BPSK) UWB systems applying the FCC-constraint pulses are investigated under flat Nakagami-mfading channel and additive white Gaussian noise (AWGN). The numerical results show that two FCC-constraint pulses, PSP and MMNHP, have almost same sensitivity to the timing jitter even though they have different transceiver complexity. Additionally, the additional required power due to the timing jitter exponentially increases, but that due to the amplitude fading is not exceeded over 4dB.
24
Xu, Hui Bin, and Li Jie Zhou. "Improved Method of Generating UWB Pulse." Applied Mechanics and Materials 71-78 (July 2011): 4790–93. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.4790.
Full textAbstract:
The choice of pulse is crucial for ultrawide-bandwidth (UWB) communication system, bescause it will affect the power spectral density of emission signal. In most cases, the spectrum of single pulse waveform do not meet the federal communication committee (FCC) emission mask.The text proposes that the optimal waveform can be got through a linear combination of different derivatives of the Gaussian pulse so that it can approach the standard of emission mask in the whole band.
25
PROF., MRS. R. P. LABADE. "OVERVIEW OF BAND NOTCHING METHODS USED IN UWB ANTENNA." IJIERT - International Journal of Innovations in Engineering Research and Technology ICITER- 16 PUNE (June 20, 2016): 210–13. https://doi.org/10.5281/zenodo.1463627.
Full textAbstract:
<strong>The Federal communication commission (FCC) allocates the 3.1 - 10.6 GHz band the ultra - wideband (UWB) applications. But due to some already existing systems such as WiMAX (IEEE802.16:3.3 - 3.7GHz),C - band satellite communication (3.7 - 4.2GHz),WLAN (IEEE802.11a:5.15 - 5.825GHz),X - band satellite communication (7.25 - 7.75GHz),ITU (International Telecommunication Union:8.025 - 8.4 GHz) band causes electromagnetic interference with UWB. So to remove such a interf erence between UWB and other narrow bands different notching techniques used such as tuning stub,shaped slot,parasitic element,and the fractal geometry. In this paper a comparison will be done between these techniques.</strong> <strong>https://www.ijiert.org/paper-details?paper_id=140916</strong>
26
Kaiser, T. "On UWB beamforming." Advances in Radio Science 2 (May 27, 2005): 163–67. http://dx.doi.org/10.5194/ars-2-163-2004.
Full textAbstract:
Abstract. Ultra-Wideband (UWB) communication systems and Multi-Input-Multi-Output (MIMO) techniques rank among the few emerging key technologies in wireless communications. For that reason the marriage of these two complementary approaches should deserve attention. Apparently, the extremely large ultra-wide bandwidth creates rich multipath diversity which calls, at a first glance, additional antenna elements into question. However, another point of view is as follows. The attenuation by solid materials usually increases with increasing frequency; e.g. frequencies above, say, 10 GHz are considered to be blocked by walls etc. Since UWB can occupy more than 7 GHz of bandwidth (according to FCC regularisation) the performance of a communication link can be physically extended only by adding spatial information, i.e. multiple antennas, even if such extension may play a minor role. From this point of view UWB&amp; MIMO presents an upper physical bound for indoor communications and is therefore at least worth to be investigated. In order to see the forest for the trees, we will focus in this limited contribution on beamforming among all alternative MIMO techniques (like space time coding or spatial multiplexing).
27
Lizzi, L., F. Viani, R. Azaro, and A. Massa. "Design of a miniaturized planar antenna for FCC-UWB communication systems." Microwave and Optical Technology Letters 50, no. 7 (2008): 1975–78. http://dx.doi.org/10.1002/mop.23519.
Full text
28
S, A. Arunmozhi, and Benita Esther Jemmima V. "Design of Windmill Shaped Ultra-Wideband Antenna for Mobile Application." Journal of Communication Engineering and Its Innovations 5, no. 3 (2019): 22–32. https://doi.org/10.5281/zenodo.3570730.
Full textAbstract:
<em>A compact, wideband, windmill shape ultra-wideband antenna is designed for mobile communication and a comparison is carried out among different substrate materials to investigate the most suitable substrate for the proposed antenna. UWB antennas are suitable for mobile communication due to its large bandwidth. The proposed antenna occupies a compact size of 34 mm x 30 mm. The design of the proposed antenna and the simulations are carried out in HFSS (High Frequency Structural Simulator). The antenna is designed on a polyethylene substrate with a dielectric constant (εr) of 2.25 and a thickness of 1.6 mm. This provides high return loss and gain when compared with other analyzed substrates. The antenna operates at a frequency band of 4 GHz to 10 GHz which is the recommended frequency range of UWB band by FCC. The maximum gain of the proposed antenna is 5.16 dB at 6 GHz and the directivity of the antenna is 5.27 dB with efficiency of 97.8 %. This antenna is suitable for UWB communication, with its broadband characteristics it can be utilized short-range communication.</em>
29
PROF., R.S. PAWASE. "A REVIEW ON DIFFERENT BAND NOTCHING METHODS USED IN UWB SLOT ANTENNAS." IJIERT - International Journal of Innovations in Engineering Research and Technology ICITER- 16 PUNE (June 20, 2016): 214–16. https://doi.org/10.5281/zenodo.1463631.
Full textAbstract:
<strong><strong> </strong>According to federal communication commission (FCC) rules,the 3.1 - 10.6GHz band is allocated to the ultra wideband (UWB) applications. Notching will be helpful to avoid interference between UWB and some narrow band that are WiMAX (3.3 � 3.7GHz),C - band satellite downlink (3.7GHz � 4.2GHz),WLAN (5.15 � 5.8 25 GHz),DSRC (5.5 � 5.925 GHz) etc. Different band notching techniques are discussed in this paper. Some techniques include adding parasitic stubs of different shapes,rectangular slits,and slots. In this paper comparative study will be done for different notching techniques.</strong> <strong>https://www.ijiert.org/paper-details?paper_id=140917</strong>
30
S., Elajoumi, Tajmouati A., Zbitou J., Errkik A., El Abdellaoui L., and M. Sanchez A. "Novel UWB Microstrip Antenna Structures with Defected Ground Structure." Indonesian Journal of Electrical Engineering and Computer Science 11, no. 2 (2018): 429–36. https://doi.org/10.11591/ijeecs.v11.i2.pp429-436.
Full textAbstract:
This paper presents the design of new compact printed antennas for Ultra Wide Band applications, fed with a microstrip-line. The proposed designs consist of a patch antenna with defected ground, which are fed by 50Ω microstrip transmission line. The frequency range is 3.1-10.6 GHz which is the Federal Communication Commission (FCC) band of UWB. The proposed antennas are easy for integration with microwave circuits. They are validated into simulation by using two electromagnetic solvers CST-MW and Ansoft HFSS. The simulated input impedance bandwidth ranging 3GHz to more than 14 GHz is obtained with return loss less -10dB, and exhibits good UWB characteristics. The measured parameters are good agreement with the simulation. Therefore these antennas offer excellent performance for UWB system.
31
Elajoumi, Saida, A. Tajmouati, J. Zbitou, A. Errkik, L. El Abdellaoui, and A. M. Sanchez. "Novel UWB Microstrip Antenna Structures with Defected Ground Structure." Indonesian Journal of Electrical Engineering and Computer Science 11, no. 2 (2018): 429. http://dx.doi.org/10.11591/ijeecs.v11.i2.pp429-436.
Full textAbstract:
<p>This paper presents the design of new compact printed antennas for Ultra Wide Band applications, fed with a microstrip-line. The proposed designs consist of a patch antenna with defected ground, which are fed by 50Ω microstrip transmission line. The frequency range is 3.1-10.6 GHz which is the Federal Communication Commission (FCC) band of UWB. The proposed antennas are easy for integration with microwave circuits. They are validated into simulation by using two electromagnetic solvers CST-MW and Ansoft HFSS. The simulated input impedance bandwidth ranging 3GHz to more than 14 GHz is obtained with return loss less -10dB, and exhibits good UWB characteristics. The measured parameters are good agreement with the simulation. Therefore these antennas offer excellent performance for UWB system.</p>
32
Kavita, S. Alone* Prof. Shashi Prabha. "DESIGN AND B.W. OPTIMIZATION OF UWB (ULTRA WIDEBAND) ANTENNA." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 6 (2016): 284–91. https://doi.org/10.5281/zenodo.54792.
Full textAbstract:
Ultra wideband (UWB) technology is an ideal candidate for a low power, low cost, high data rate, and short rang wireless communication system. According to the Federal Communication Commission (FCC), UWB signal is defined as a signal having fractional bandwidth greater than 20% of the center frequency [3]. Antennas are an integral part of everyday lives and are used for a multitude of purposes. Antenna is one type of transducer that converts electrical energy into the electromagnetic energy in form of electromagnetic waves [1]. These Monopole antennas combine the signals from multiple antennas in a way that mitigates multipath fading and maximize the output signal to-noise ratio. It can suddenly increase the performance of a communication system. In the past, most papers apply genetic algorithms for searching the minimum side lobe level of the antenna [3,8].In desired phase weights determined by the scan angle and array geometry, the amplitude weights ofelements are optimized by differential evolution algorithm to drive down the side-lobes. In this project, a Monopole ultra wideband elliptical antenna array at the transmitter to synthesize an array pattern for minimizing the BER performance in a UWB communication system and To design & B.W. optimizations of UWB antenna. The electromagnetic software MWS-CST(Computer simulation technology simulator) is employed to perform the antenna design and optimization process.
33
V.Prashanth, K., A. Tejasri, K. Sandeep, U. Sateesh Kumar, and G. Swarupa. "Design of UWB Antenna with WLAN & X-Band Notch for Wireless Communication." International Journal of Engineering & Technology 7, no. 2.7 (2018): 484. http://dx.doi.org/10.14419/ijet.v7i2.7.10868.
Full textAbstract:
In this proposition, a traditional UWB antenna with twofold indent channels was intended for a few remote applications. The exhibited antenna is outlined having estimations of 30 × 35 × 1.6 mm3 with a fix of rectangular staircase design. The dismissal bands are WLAN at 5 GHz (5.1 - 5.8 GHz) and the satellite X-band from space to earth (7.25 - 7.75 GHz). The patch with a step design with a modified π-formed opening gets the ultra-wide band. The UWB scope of 3.1 - 10.6 GHz affirmed by FCC can possibly cause interferences in the various wireless systems applications.. With a specific end goal to lessen these interferences, we settled on the band indent. In this proposed outline, the WLAN has scores setting a U-molded opening in the patch and the X-band has indents with a reversed T-shape in the ground plane.
34
Rao, Dr K. Babu. "Enhanced Circularly Polarized Antenna for Body Centric Communication." International Journal for Research in Applied Science and Engineering Technology 12, no. 4 (2024): 3030–41. http://dx.doi.org/10.22214/ijraset.2024.60580.
Full textAbstract:
Abstract: This study introduces a miniaturized circularly polarized ultra-wideband (UWB) antenna designed specifically for body-centric communication applications, with a focus on its performance across different frequencies. Fabricated on jean fabric, the antenna offers exceptional flexibility and seamless integration into clothing, making it ideal for wearable devices. The design achieves circular polarization through the utilization of an asymmetric stepped L-shaped ground plane and a crossshaped stub integrated into the radiator structure.Operating across the UWB frequency spectrum ranging from 3 GHz to 9.5 GHz, the antenna exhibits consistent and reliable performance in terms of gain, radiation pattern, and current distribution. ensuring effective signal transmission and reception. Importantly, the antenna complies with FCC specific absorption rate (SAR) limits, ensuring safety in wearable applications.Throughout the frequency range, the antenna maintains an omnidirectional radiation pattern, facilitating reliable on-body communication regardless of orientation. This characteristic is crucial for maintaining connectivity and signal quality in body-centric communication systems.Analysis of the current distribution confirms the antenna's effectiveness across different frequency bands, further validating its performance and suitability for body-centric communication applications.
35
M. Nair, Sreejith, and Manju Abraham. "ULTRA COMPACT SEMICIRCULAR SLOT ANTENNA FOR UWB COMMUNICATIONS." ICTACT Journal on Microelectronics 10, no. 3 (2024): 1831–38. https://doi.org/10.21917/ijme.2024.0316.
Full textAbstract:
An ultra compact dipole antenna with a semicircular slot suitable for UWB application is developed and discussed. The developed antenna offers a 2:1 VSWR bandwidth starting from 2.92 GHz to 11.34 GHZ which is wide enough to cover the FCC specified UWB frequency spectrum. This antenna offers an average gain of 5.1 dBi in the entire frequency band with greater than 90% radiation efficiency. Developed antenna has an overall volume of 20.3 × 14 × 1.6 mm3 which is compact when compared with other antennas designs. Another attraction of the proposed structure is the simplicity and less number of dimensional aspects and which makes it a suitable candidate in latest generation communication gadgets.
36
Khan, Muhammad Irshad, Muhammad Irfan Khattak, Gunawan Witjaksono, et al. "Experimental Investigation of a Planar Antenna with Band Rejection Features for Ultra-Wide Band (UWB) Wireless Networks." International Journal of Antennas and Propagation 2019 (June 2, 2019): 1–11. http://dx.doi.org/10.1155/2019/2164716.
Full textAbstract:
The Federal Communication Commission (FCC) has authorized the use of unlicensed ultra-wide band (UWB) spectrum in the frequency range from 3.1 to 10.6 GHz for a variety of short-range applications, including wireless monitors and printers, camcorders, radar imaging, and personal area networks (PANS). However, the interference between coexisting narrowband channels and UWB signals that share the same spectrum should be avoided by designing UWB antennas with band notch characteristics. This work presents a printed monopole antenna (PMA) with slots of different shapes etched in the radiating element to obtain band rejection in the three coexisting communication bands, i.e., Worldwide Interoperability for Microwave Access (WiMAX), Wireless Local Area Network (WLAN), and International Telecommunication Union (ITU). A rectangular slot is etched to reject the WiMAX band (3.01-3.68 GHz), an upturned C slot stops the WLAN band (5.18-5.73 GHz) while an inverted-U slot halts the ITU frequency band (7.7-8.5 GHz). The proposed antenna occupies a volume of 32 x 30 x 1.6 mm3 and it radiates efficiently (>90%) with a satisfactory gain (>1.95 dBi) in the unnotched UWB frequency range. The simulations are performed in High Frequency System Simulator (HFSS), while the measurements are conducted in antenna measurement facility and found in close agreement with the former.
37
M. Nair, Sreejith, Manju Abraham, and Dhandapani K.R. "WIDE BAND HIGH GAIN DIRECTIONAL ANTENNA FOR 5G APPLICATIONS." ICTACT Journal on Microelectronics 9, no. 4 (2024): 1681–86. https://doi.org/10.21917/ijme.2024.0291.
Full textAbstract:
ACS fed directional monopole suitable for high data rate communication with simple and compact structure, high gain and heavy bandwidth is presented. Antenna’s bandwidth ranging from 3.8 to 10.29 GHz, with uniformly oriented directional radiation pattern and polarization make it suitable for high data rate communication applications such as ISM5.2 and ISM5.8 WLANs, HIPERLAN2 and HiSWANa. It also covers 95% of FCC specified UWB band too. The peak gain of the antenna is obtained as 7.84 dBi with efficiency greater than 88 %. Electrical equivalent circuit modeling of the antenna is also developed and the results obtained are discussed.
38
Ouyang, Yuan, Wen-Piao Lin, and Chuan-Chih Liu. "Performance Analysis of the Multiband Orthogonal Frequency Division Multiplexing Ultra-Wideband Systems for Multipath Fading and Multiuser Interference Channels." Mathematical Problems in Engineering 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/190809.
Full textAbstract:
This paper presents the performance analysis of the multiband orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) systems for multipath fading and multiuser interference channels. A closed form approximation of the BER performance of the MB-OFDM UWB system with multiple interferences is proposed. Based on the derived approximation, the effects on the BER performance for the choice of the codeword constraint lengths of the convolutional encoder, the length of the cyclic prefix, and the multiuser environments of two or more interferers are thoroughly discussed. Four UWB multipath fading channels are also investigated for the BER performance of the MB-OFDM UWB system. The simulated results provide us with useful information to appropriately choose the parameters of the MB-OFDM UWB system for the sake of achieving the BER performance that conforms to requirement of the FCC standards.
39
Rajanna, B., P. Chandrashrkar, and K. KishanRao. "Multi-hope relay based high capacity energy efficient model for ultra wideband communication system." International Journal of Engineering & Technology 7, no. 1.5 (2017): 118. http://dx.doi.org/10.14419/ijet.v7i1.5.9132.
Full textAbstract:
Demanding large bandwidth and signal robustness over a short distance, ultra wideband communication systems plays an important role. UWB systems exhibits very low spectral density, implies that the interference to narrowband systems is very small. The relay based communication has the advantages of coverage extension, range extension, increase data rates and green communication. The relay based communication with UWB frequency is used to increase the coverage area by using of relays and increasing the data rates by increasing SNR of the links using multi-hop communication. In this paper, capacity and bit error rate of relay based UWB system for indoor and outdoor channel models are analyzed. key Terms—UWB, green communication, multi-hop, capacity, bit error rate, spectral density.
40
El-Gendy, Mohamed S., Mohamed Mamdouh M. Ali, Ernesto Bautista Thompson, and Imran Ashraf. "Triple-Band Notched Ultra-Wideband Microstrip MIMO Antenna with Bluetooth Band." Sensors 23, no. 9 (2023): 4475. http://dx.doi.org/10.3390/s23094475.
Full textAbstract:
In this paper, a novel ultra-wideband UWB antenna element with triple-band notches is proposed. The proposed UWB radiator element operates from 2.03 GHz up to 15.04 GHz with triple rejected bands at the WiMAX band (3.28–3.8 GHz), WLAN band (5.05–5.9 GHz), and X-band (7.78–8.51 GHz). In addition, the radiator supports the Bluetooth band (2.4–2.483 GHz). Three different techniques were utilized to obtain the triple-band notches. An alpha-shaped coupled line with a stub-loaded resonator (SLR) band stop filter was inserted along the main feeding line before the radiator to obtain a WiMAX band notch characteristic. Two identical U-shaped slots were etched on the proposed UWB radiator to achieve WLAN band notch characteristics with a very high degree of selectivity. Two identical metallic frames of an octagon-shaped electromagnetic band gap structure (EBG) were placed along the main feeding line to achieve the notch characteristic with X-band satellite communication with high sharpness edges. A novel UWB multiple-input multiple-output (MIMO) radiator is proposed. The proposed UWB-MIMO radiator was fabricated on FR-4 substrate material and measured. The isolation between every two adjacent ports was below −20 dB over the FCC-UWB spectrum and the Bluetooth band for the four MIMO antennas. The envelope correlation coefficient (ECC) between the proposed antennas in MIMO does not exceed 0.05. The diversity gains (DG) for all the radiators are greater than 9.98 dB.
41
Saeidi, Tale, Idris Ismail, Wong Peng Wen, Adam R. H. Alhawari, and Ahmad Mohammadi. "Ultra-Wideband Antennas for Wireless Communication Applications." International Journal of Antennas and Propagation 2019 (April 22, 2019): 1–25. http://dx.doi.org/10.1155/2019/7918765.
Full textAbstract:
A review paper concerning wide-band and ultra-wideband (UWB) antennas used for wireless communication purposes in terms of the materials as well as a numerical analysis is presented. These antennas which are taken into account are listed as wide-band microstrip antenna, wide-band monopole antenna over a plate, wide-slot UWB antenna, stacked patch UWB antenna, taper slot (TSA) UWB antenna, metamaterial (MTM) structure UWB antennas, elliptical printed monopole UWB antenna, and flexible wearable UWB antenna. The antennas’ performance is compared based on their size and how they can be applicable for portable communication device applications. This review paper furnishes a proper direction to select varieties of figures in terms of impedance bandwidth, gain, directivity, dimensions, time domain characteristics, and materials affecting these antenna’s characteristics.
42
Kumar, N. Anvesh, and A. S. Gandhi. "A Compact Novel Three-Port Integrated Wide and Narrow Band Antennas System for Cognitive Radio Applications." International Journal of Antennas and Propagation 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/2829357.
Full textAbstract:
The design of a three-port radiating structure, integrating wide and narrow band antennas for cognitive radio applications, is presented. It consists of a UWB antenna for spectrum sensing and two narrow band antennas for wireless communication integrated on the same substrate. The UWB antenna covers the complete UWB spectrum (3.1 GHz to 10.6 GHz) approved by FCC. In the two narrow band antennas, each antenna presents dual bands. In particular, the first narrowband antenna resonates at 6.5 GHz, covering the frequency band between 6.36 GHz and 6.63 GHz, and at 9 GHz, covering the frequency band between 8.78 GHz and 9.23 GHz, presenting minimum return loss values of 28.3 dB at 6.5 GHz and 20.5 dB at 9 GHz, respectively. Similarly, the second one resonates at 7.5 GHz, covering the frequency band between 7.33 GHz and 7.7 GHz, and at 9.5 GHz, covering the frequency band between 9.23 GHz and 9.82 GHz, presenting minimum return loss values of 19.6 dB at 7.5 GHz and 28.8 dB at 9.5 GHz, respectively. Isolation among the three antennas is less than −20 dB over the UWB frequency spectrum. These antennas are realized on a FR4 substrate of dimensions 30 mm × 30 mm × 1.6 mm. Experimental results show a good agreement between the simulated and measured results.
43
Ara, Syeda Rafath. "A Compact Asymmetrical Triangular Truncated Polygon Super Wideband Microstrip Antenna for Wireless Communication Applications." Journal of Advance Research in Aeronautics and Space Science 08, no. 3&4 (2022): 1–5. http://dx.doi.org/10.24321/2454.8669.202101.
Full textAbstract:
The rapid growth in wireless communications of today’s era requires a new generation of antennas whose operating frequency range is greater than the FCC allocated UWB (3.1-10 GHz) frequency range and also operate simultaneously for multiple communication standards in single band of frequency. Microstrip antennas technology provides these features. A ubiquitous compact asymmetrical triangle truncated polygon structure monopole fed super wideband microstrip antenna for wireless communication is proposed in this paper. The antenna uses a compact size of 50X40 mm.2 The irregular tapered truncations on patch geometry have potential effects on enlargement of operating frequency band. The antenna is designed using modified epoxy substrate material of ε= 4.2, h=1.6 mm at 3 GHz, fabricated and measured. The measured results confirm that the antenna has operating frequency band of 1.2-20.03 GHz (177.39%) with bandwidth ratio of 16:1. The antenna has stable radiation patterns and consistent gain over operating band. The time domain group delay of antenna is within 4 ns, which indicates good linear phase response. Furthermore, this proposed antenna is able to cover the DVB-H in L-band for PMP (1.45-1.49 GHz), DCS, PCS, UMTS, Bluetooth, WiMAX2500, LTE2600 and UWB bands applications.
44
Zarko, Sakotic, Crnojevic Bengin Vesna, and Jankovic Nikolina. "Compact circular-patch-based bandpass filter for ultra-wideband wireless communication systems." AEU - International Journal of Electronics and Communications 82 (September 8, 2017): 272–78. https://doi.org/10.1016/j.aeue.2017.09.002.
Full textAbstract:
Ultra-wideband (UWB) is a radio technology that enables low-power-level, short-range, and wide-bandwidth communication, and it has been widely applied in personal area networks, precision geolocation, medical, surveillance, and vehicular radar systems. Since Federal Communications Commission released the unlicensed use of the UWB range (3.1–10.6 GHz), a significant attention has been paid to the development of UWB devices, particularly UWB bandpass filters. In this paper, we propose a novel UWB bandpass filter based on circular patch resonator that is grounded by via and perturbed by slits and defected ground structures. The resonator’s behaviour is analysed in detail and it is shown that its specific configuration allows a flexible control of the three lowest resonant modes, which are used to form UWB passband. To demonstrate the potential of the resonator, a UWB filter has been designed, fabricated, and measured. The filter is characterized by the insertion loss lower than 1 dB and return loss higher than 17 dB within the passband, as well as by very small group delay variation of only 0.07 ns. Also, the filter exhibits suppression higher than 19 dB up to 30 GHz, and very small overall dimensions of only 0.31<em>λ<sub>g</sub></em> × 0.31<em>λ<sub>g</sub></em>, and thus it outperforms other published UWB filters.
45
Darsono, M., and Dwi Widiatmoko. "STUDI PERANCANGAN ANTENA MICROSTRIP MONOPOLE BENTUK PATCH SEGITIGA DENGAN TEKNIK DEFECTED GROUND STRUCTURE UNTUK APLIKASI ULTRA-WIDEBAND." JTT (Jurnal Teknologi Terapan) 8, no. 2 (2022): 174. http://dx.doi.org/10.31884/jtt.v8i2.449.
Full textAbstract:
Study on the design of a microstrip monopole antenna as a form of support and development of UWB (Ultra-Wideband) wireless communication devices. The basic concept of the proposed antenna design is minimalist with the characteristics of operating on broadband in accordance with those regulated by the FCC (Federal Communications Commission). The design of a planar type of microstrip antenna with triangular radiation using the DGS (Defected Ground Structure) technique for the design of a trapezoidal ground plane. As support in this research, Duroid RT 5880 substrate material and CST software were used for the simulation method. The results of the simulation method obtained are twofold: The shape of the antenna design configuration is minimalist and compact and the antenna performance parameters. For antenna performance parameters obtained through simulation methods, such as the fractional bandwidth of return loss below 10 dB is 3.8:1 (VSWR < 2), and the maximum power radiation transmittance is 2.59dBi, forming an omnidirectional radiation pattern with vertical polarization. The characteristics of the operating performance of the antenna on the UWB spectrum are able to cover the frequency area in the C-Band and X-band and in the application, the antenna design supports wireless LAN communication and satellite communication systems.
46
Higashi, Yoshiyuki, and Kenta Yamazaki. "Autonomous Flight Using UWB-Based Positioning System with Optical Flow Sensors in a GPS-Denied Environment." Journal of Robotics and Mechatronics 35, no. 2 (2023): 328–37. http://dx.doi.org/10.20965/jrm.2023.p0328.
Full textAbstract:
This study presents the positioning method and autonomous flight of a quadrotor drone using ultra-wideband (UWB) communication and an optical flow sensor. UWB communication obtains the distance between multiple ground stations and a mobile station on a robot, and the position is calculated based on a multilateration method similar to global positioning system (GPS). The update rate of positioning using only UWB communication devices is slow; hence, we improved the update rate by combining the UWB and inertial measurement unit (IMU) sensor in the prior study. This study demonstrates the improvement of the positioning method and accuracy by sensor fusion of the UWB device, an IMU, and an optical flow sensor using the extended Kalman filter. The proposed method is validated by hovering and position control experiments and also realizes a sufficient rate and accuracy for autonomous flight.
47
Zhang, Shuang, Zhi Gang Zhu, and Jiang Biao Wu. "Multiuser Interference Resisting of Ultra Wide Band Based on Independent Component Analysis." Applied Mechanics and Materials 263-266 (December 2012): 1062–66. http://dx.doi.org/10.4028/www.scientific.net/amm.263-266.1062.
Full textAbstract:
When several ultra-wide band (UWB) communication systems coexist, multiuser interferences (MUI) are unavoidable. To cope with the MUI of UWB systems, the independent of UWB signals are investigated and a novel receiving method is proposed. At first several antennas are utilized to receive the transmitted signals of different UWB users, and the mixture signals are gained. Then the mixed signals are separated by independent component analysis algorithm to recover the transmitted signals of each UWB users. Finally, the information of each UWB users transmitted is demodulated. Computer simulations show that the proposed method can efficiently resist the interference of different UWB users.
48
Abdelraheem, Ahmed M., and Mahmoud A. Abdalla. "Compact curved half circular disc-monopole UWB antenna." International Journal of Microwave and Wireless Technologies 8, no. 2 (2015): 283–90. http://dx.doi.org/10.1017/s1759078714001524.
Full textAbstract:
This paper introduces a compact modified semi-circular monopole ultra-wideband (UWB) antenna. A compact antenna size (4.3 × 3.4 cm2) compared to the typical coplanar waveguide (CPW) circular monopole antenna (5.5 × 4 cm2) is achieved. The proposed antenna is completely proven for UWB communication performance. The antenna is matched over 8.4 GHz bandwidth (2.2–10.6 GHz), with reflection coefficient lower than −10 dB over the band. Matching bandwidth is verified through simulation and measurements of VSWR. Efficient power radiation over the band is proven through radiation efficiency. Radiation efficiency is not lower than 81% at the upper end of the band. Omnidirectional characteristics are proven through, firstly, measured transfer function magnitude at three different configurations, Face-to-Face, Face-to-Side, and Side-by-Side (all frequencies at different orientations), and, secondly, measured radiation pattern at three selected frequencies that span the bandwidth (all orientations at different frequencies). Moreover, the ability of the antenna to support, as narrow pulses as, 0.25 ns omnidirectionally is proven through detailed study for time response. Antenna transfer function is measured for magnitude and phase. Then, a first-order Raeighly pulse, that fulfils the FCC mask for emission restrictions, is applied at the terminals of a UWB system of the proposed UWB antenna. Finally, the output, barely distorted, normalized, pulse is compared to the input pulse.
49
Akram, El Hamdouni, Tajmouati Abdelali, Zbitou Jamal, Errkik Ahmed, El Abdellaoui Larbi, and Latrach Mohamed. "A New Design of an UWB Circular Fractal Printed Antenna." TELKOMNIKA Telecommunication, Computing, Electronics and Control 16, no. 5 (2018): 1931–38. https://doi.org/10.12928/TELKOMNIKA.v16i5.9548.
Full textAbstract:
A Microstrip Antenna (MSA) has been computed and analysed in this study by using CST of Microwave studio as Electromagnetic solver by generating the coefficient of reflection, the Gain, the density of current and the radiation pattern in the frequency range 3.1-10.6 GHz which commercialised by the Federal communication commission (FCC) as an Ultra-wide band (UWB) frequency range. The substrate used to achieve the proposed structure is the FR4-Epoxy with a thickness of 1.6 mm, a constant dielectric of 4.4 and a loss tangent of 0.025. The radiating patch is a circular shape etched with different sizes to create the fractal geometry. The transmission line has been designed by including a tapered section in the part connected to the radiator. The design of the antenna has been verified by using ADS and CST solvers. The fabrication of the antenna has been performed in order to measure the coefficient of reflection and the radiation pattern.
50
Ma, Bo, Mingdong Xu, and Zhilu Wu. "A FPGA implementation of GMM MUD algorithm for space formation aircraft communication system." MATEC Web of Conferences 309 (2020): 01004. http://dx.doi.org/10.1051/matecconf/202030901004.
Full textAbstract:
Space formation aircraft communication system needs to meet strong anti-interference ability, low power consumption and high transmission rate performance. Ultra-wideband (UWB) has high data transfer rate, low device complexity, high interference resistance and confidentiality. Therefore, UWB technology is used in space formation aircraft communication system, which is direct sequence ultra-wideband (DS-UWB) space formation aircraft communication system. This paper, we put forward a multi-user detection (MUD) algorithm based on Gaussian Mixture Model (GMM) in DS-UWB communication system and its field-programmable gate array (FPGA) implementation. We adopt a way which based on MATLAB and FPGA platform, and results show that MUD algorithm based on GMM has better bit error rate (BER) performance compared to classical multi-user detection algorithm.