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Journal articles on the topic 'Antenna processing'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Vinothkanna, R. "A Survey – Wearable Antenna Techniques and its Applications." December 2022 1, no. 1 (2022): 87–98. http://dx.doi.org/10.36548/rrrj.2022.1.008.

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Smart Antenna is an array of antennas which uses the smart signal processing algorithms to track and locate the client device using the direction of arrival of a signal. Smart Wearable Antennas are designed to function while being worn. Wearable antennas are used within the context of Wireless Body Area Networks. The wearable antenna is high in efficiency, miniature in size, and simple in structure, and is implemented with electrical performance and polarization effects, which helps in healthcare, medical and military applications, smart glasses, sensor devices in sports, etc. This research st

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Vinothkanna, R. "A Survey – Wearable Antenna Techniques and its Applications." December 2022 1, no. 1 (2022): 87–98. http://dx.doi.org/10.36548/rrrj.2023.1.008.

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Smart Antenna is an array of antennas which uses the smart signal processing algorithms to track and locate the client device using the direction of arrival of a signal. Smart Wearable Antennas are designed to function while being worn. Wearable antennas are used within the context of Wireless Body Area Networks. The wearable antenna is high in efficiency, miniature in size, and simple in structure, and is implemented with electrical performance and polarization effects, which helps in healthcare, medical and military applications, smart glasses, sensor devices in sports, etc. This research st

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Dawidowicz, Karol, and Radosław Baryła. "GNSS Antenna Caused Near-Field Interference Effect in Precise Point Positioning Results." Artificial Satellites 52, no. 2 (2017): 27–40. http://dx.doi.org/10.1515/arsa-2017-0004.

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Abstract Results of long-term static GNSS observation processing adjustment prove that the often assumed “averaging multipath effect due to extended observation periods” does not actually apply. It is instead visible a bias that falsifies the coordinate estimation. The comparisons between the height difference measured with a geometrical precise leveling and the height difference provided by GNSS clearly verify the impact of the near-field multipath effect. The aim of this paper is analysis the near-field interference effect with respect to the coordinate domain. We demonstrate that the way of

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Chougule, Rutuja. "Smart Antenna Systems." International Journal for Research in Applied Science and Engineering Technology 10, no. 6 (2022): 1182–86. http://dx.doi.org/10.22214/ijraset.2022.43988.

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Abstract: Smart antennas have received increasing interest for improving the performance of wireless radio systems. These systems of antennas include a large number of techniques that attempt to enhance the received signal, suppress all interfering signals, and increase capacity, in general. The main purpose of this article is to provide an overview of the current state of research in the area of smart antennas, and to describe how they can be used in wireless systems. A smart antenna takes advantage of diversity effect at the source (transmitter), the destination (receiver), or both. Diversit

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Miawarni, Herti, M. Mahaputra Hidayat, Surya Sumpeno, and Eko Setijadi. "Tracking System for Indoor TV Antenna Based on CVBS Signal Processing." Jurnal Elektronika dan Telekomunikasi 17, no. 2 (2017): 48. http://dx.doi.org/10.14203/jet.v17.48-55.

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Analog terrestrial TV is still a popular choice for urban societies although the migration to digital system has already begun. Video quality of analog TV was heavily influenced by performance of the antenna. Most users prefer to use indoor antenna due to its simplicity. The disadvantage of this type of antenna is the users may need to change the antenna direction repeatedly when they change to different TV channel. In this research, we designed and developed tracking system that enable indoor TV antenna to adjust its direction automatically to get optimum video clarity. This system is built b

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Basu, Sukla. "A Novel Shaped Four Port MIMO Antenna for Wireless Communication." Asian Journal of Electrical Sciences 12, no. 1 (2023): 17–22. http://dx.doi.org/10.51983/ajes-2023.12.1.3667.

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This paper presents a compact novel shaped micro strip line fed four element Multiple Input Multiple Output (MIMO) antenna for wireless application at 2.4 GHz. Four vertically oriented identical rectangular patch antennas are used to form a hollow cylinder of rectangular cross section. The direction of radiation of each antenna is thus oriented at 900 with respect to its two adjacent antennas providing good isolation between adjacent antennas in this compact MIMO system. Each antenna element has the dimensions of 0.30λx0.38λx0.012λ. The whole MIMO antenna has the outer dimensions of 0.38λx0.38

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Kuz'kin, Venedikt M., Sergey A. Pereselkov, Yuri V. Matvienko, Vladimir I. Grachev, Sergey A. Tkachenko, and Nadezhda P. Stadnaya. "Holographic processing of hydroacoustic information using linear antennas." Radioelectronics. Nanosystems. Information Technologies. 15, no. 2 (2023): 169–78. http://dx.doi.org/10.17725/rensit.2023.15.169.

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The formation of an interferogram and a hologram of a moving underwater noise source using linear antennas is considered. The relationship between the spectral density of the hologram and the aperture and the angular dependence of the received field is derived. Antenna gain has been estimated. The issue of the limiting signal-to-noise ratio at which the holographic processing remains operational is discussed. An analytical expression is obtained that establishes a relationship between the signal/noise ratios at the output and input of the antenna. Conditions are formulated under which the inte

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Lu, Zukun, Feiqiang Chen, Yuchen Xie, Yifan Sun, and Hongliang Cai. "High Precision Pseudo-Range Measurement in GNSS Anti-Jamming Antenna Array Processing." Electronics 9, no. 3 (2020): 412. http://dx.doi.org/10.3390/electronics9030412.

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Radio frequency interference has become a rising problem to the signal of the Global Navigation Satellite System (GNSS). An effective way to achieve anti-jamming is by using an antenna array in GNSS signal processing. However, antenna array processing will cause a decline in the accuracy of pseudo-range measurements because of the channel mismatch and some other non-ideal factors. To solve this problem, space–time or space–frequency adaptive array processing is widely used for interference cancellation while constraining the delay of each antenna at the same time. In this paper, an anti-jammin

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KOCZ, J., L. J. GREENHILL, B. R. BARSDELL, et al. "A SCALABLE HYBRID FPGA/GPU FX CORRELATOR." Journal of Astronomical Instrumentation 03, no. 01 (2014): 1450002. http://dx.doi.org/10.1142/s2251171714500020.

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Radio astronomical imaging arrays comprising large numbers of antennas, O(102–103), have posed a signal processing challenge because of the required O (N2) cross correlation of signals from each antenna and requisite signal routing. This motivated the implementation of a Packetized Correlator architecture that applies Field Programmable Gate Arrays (FPGAs) to the O (N) "F-stage" transforming time domain to frequency domain data, and Graphics Processing Units (GPUs) to the O (N2) "X-stage" performing an outer product among spectra for each antenna. The design is readily scalable to at least O(1

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Zheng, Hanwen. "Lossy and Loss Free Material Research Taking Microstrip Patch Antenna Operating on the Band n261 as the Case." Highlights in Science, Engineering and Technology 27 (December 27, 2022): 639–50. http://dx.doi.org/10.54097/hset.v27i.3827.

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The focus of this paper is to discuss the loss mechanism of the antenna and its effect on the antenna performance. This paper will follow the order of design basis, design idea, design content, and design results. Based on an antenna design for an n261 band, experiments are conducted in CST studio using different materials under lossy and lossless conditions. It includes 8 different sets of experiments. The lossy material will perform worse than the lossless material by processing the data through the program. When designing antennas, the performance of lossy materials will be worse. The mater

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Tserne, Eduard, Anatoliy Popov, Oleksandr Pidlisnyi, Danyil Kovalchuk, and Oleksandr Sereda. "Four-antenna amplitude direction finder: statistical synthesis and experimental research of signal processing algorithm." Radioelectronic and Computer Systems, no. 4 (December 6, 2023): 88–99. http://dx.doi.org/10.32620/reks.2023.4.08.

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The subject of this study is the algorithms for measuring the angular positions of radio emission sources. The goal of this study is to develop an improved algorithm for signal processing in amplitude direction finders that will provide several unambiguous measurement angles at high steepness of the discrimination characteristic by combining measurements of systems with different widths of antenna patterns. The task: to develop an optimal signal processing algorithm for a four-antenna amplitude direction finding system, two antennas of which have a wide radiation pattern and the other two have

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BARYŁA, Radosław, and Karol DAWIDOWICZ. "Analysis of Comparability of PCV in Surveying-Grade GNSS Antenna – Topcon HIPER-VR Case Study." Artificial Satellites 59, no. 3 (2024): 87–99. http://dx.doi.org/10.2478/arsa-2024-0007.

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ABSTRACT It is well known that the phase center of a Global Navigation Satellite System (GNSS) antenna is not a stable point. For any given GNSS antenna, the phase center will change with the direction of the incoming signal from a satellite, as well as the frequency. Ignoring these phase center variations (PCVs) in GNSS data processing can lead to notable errors, especially in vertical position component determination. To avoid the problem, antenna PCV together with the phase center offset (PCO) information are recommended to be used in GNSS observation processing. We currently distinguish be

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Tsay, Tain-Sou. "Small Loop Antenna System Design for Radio Direction Finding." WSEAS TRANSACTIONS ON COMMUNICATIONS 20 (December 16, 2021): 172–76. http://dx.doi.org/10.37394/23204.2021.20.22.

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In this literature, a low-cost small loop antenna is developed for radio direction finding. It consists of two coupled rectangular counter-wiring loop antennas. A signal-processing circuit is developed also for demodulated outputs. A single rectangular loop antenna is discussed first for illustrating the receiving characteristics and then the proposed two coupled rectangular counter-wiring loop antennas are designed for radio direction finding. Measurements give a large linear detecting range. It is ready for Omni-directional application using another two coupled loop antennas and can be used

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14

Sanjivani Munot. "Microwave Antenna Optimization for Low Latency and High Throughput Communication Systems." Journal of Electrical Systems 20, no. 6s (2024): 2410–16. http://dx.doi.org/10.52783/jes.3223.

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This paper presents a comprehensive exploration of microwave antenna optimization strategies aimed at achieving low latency and high throughput in modern communication systems. With the escalating demand for real-time applications and data-intensive services, the optimization of microwave antennas has become imperative to meet the stringent requirements of responsiveness and efficiency. The abstract delves into various facets of antenna optimization, including design parameters, signal processing techniques, and deployment considerations, all geared towards minimizing latency and maximizing th

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Xie, Yuchen, Zhengrong Li, Feiqiang Chen, Huaming Chen, and Feixue Wang. "The Unbiased Characteristic of Doppler Frequency in GNSS Antenna Array Processing." International Journal of Antennas and Propagation 2019 (April 24, 2019): 1–10. http://dx.doi.org/10.1155/2019/5302401.

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The antenna array technology, especially the spaced-time array processing (STAP), is one of the effective methods used in Global Navigation Satellite System (GNSS) receivers to refrain the power of jamming and enhance the performance of receivers in the circumstance of interference. However, biases induced to the receiver because of many reasons, including characteristic of antennas, front-end channel electronics, and space-time filtering, are extremely harmful to the high precise positioning of receivers. Although plenty of works have been done to calibrate the antenna and to mitigate these b

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Martinez-Ramon, Manel, Jose Luis Rojo-Alvarez, Gustavo Camps-Valls, and Christos G. Christodoulou. "Kernel Antenna Array Processing." IEEE Transactions on Antennas and Propagation 55, no. 3 (2007): 642–50. http://dx.doi.org/10.1109/tap.2007.891550.

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Shevchenko, M. E., A. B. Gorovoy, V. M. Balashov, and S. N. Solovyov. "Features of application of ESPRIT method for different configurations of antenna arrays." Issues of radio electronics, no. 12 (February 3, 2021): 30–37. http://dx.doi.org/10.21778/2218-5453-2020-12-30-37.

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The paper discusses the features of the application of the ESPRIT method, which provides direction finding of a variety of radio sources with minimal computational costs, including in real time. To be able to use ESPRIT, antenna arrays are required that have the property of shift invariance, and for practical implementation, antenna arrays are required that allow you to form estimates of the directions of arrival of the largest number of signals that overlap in the spectrum, with a minimum number of antennas and reception channels. The aim of the work is to analyze the influence of the antenna

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18

Kirtania, Sharadindu Gopal, Alan Wesley Elger, Md Rabiul Hasan, et al. "Flexible Antennas: A Review." Micromachines 11, no. 9 (2020): 847. http://dx.doi.org/10.3390/mi11090847.

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The field of flexible antennas is witnessing an exponential growth due to the demand for wearable devices, Internet of Things (IoT) framework, point of care devices, personalized medicine platform, 5G technology, wireless sensor networks, and communication devices with a smaller form factor to name a few. The choice of non-rigid antennas is application specific and depends on the type of substrate, materials used, processing techniques, antenna performance, and the surrounding environment. There are numerous design innovations, new materials and material properties, intriguing fabrication meth

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Rigosi, Elisa, Albrecht Haase, Lisa Rath, Gianfranco Anfora, Giorgio Vallortigara, and Paul Szyszka. "Asymmetric neural coding revealed by in vivo calcium imaging in the honey bee brain." Proceedings of the Royal Society B: Biological Sciences 282, no. 1803 (2015): 20142571. http://dx.doi.org/10.1098/rspb.2014.2571.

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Left–right asymmetries are common properties of nervous systems. Although lateralized sensory processing has been well studied, information is lacking about how asymmetries are represented at the level of neural coding. Using in vivo functional imaging, we identified a population-level left–right asymmetry in the honey bee's primary olfactory centre, the antennal lobe (AL). When both antennae were stimulated via a frontal odour source, the inter-odour distances between neural response patterns were higher in the right than in the left AL. Behavioural data correlated with the brain imaging resu

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20

Qian, Kun, Wen-Qin Wang, and Huaizong Shao. "Low-Complexity Transmit Antenna Selection and Beamforming for Large-Scale MIMO Communications." International Journal of Antennas and Propagation 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/159375.

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Transmit antenna selection plays an important role in large-scale multiple-input multiple-output (MIMO) communications, but optimal large-scale MIMO antenna selection is a technical challenge. Exhaustive search is often employed in antenna selection, but it cannot be efficiently implemented in large-scale MIMO communication systems due to its prohibitive high computation complexity. This paper proposes a low-complexity interactive multiple-parameter optimization method for joint transmit antenna selection and beamforming in large-scale MIMO communication systems. The objective is to jointly ma

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Bansal, Preeti, and Nidhi Chahal. "Smart Antennas for Various Applications." CGC International Journal of Contemporary Technology and Research 4, no. 2 (2022): 316–18. http://dx.doi.org/10.46860/cgcijctr.2022.07.31.316.

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The paper presents about smart antennas for advancement in wireless and mobile communication. Smart antennas also called adaptive array antennas with better signal processing & can be used to calculate beam forming vectors which helps in tracking & locating antenna beam of target. Smart antennas are helpful in health monitoring in covid-19 pandemic and provides better service quality. Smart antenna is one of the rising innovations which can satisfy the prerequisites. Smart antennas are being used for controlling, monitoring and analyzing real time systems for various applications In sm

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Shcherbyna, Olga, Maksym Zaliskyi, Olena Kozhokhina, and Felix Yanovsky. "Prospect for Using Low-Element Adaptive Antenna Systems for Radio Monitoring Stations." International Journal of Computer Network and Information Security 13, no. 5 (2021): 1–17. http://dx.doi.org/10.5815/ijcnis.2021.05.01.

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This article is devoted to the analysis of prospect to apply multifunctional adaptive antenna systems for radio monitoring stations. The review of publications done demonstrates that current antennas that are developed and used in radio monitoring systems to control and measure the parameters of electromagnetic radiation should be applicable to conduct accurate measurements in wide frequency range under the condition of interferences. The analysis shows that modern adaptive antenna systems are mostly developed for radar and telecommunications applications. In this context we consider possible

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Bhupenmewada, Kamal Niwaria Prof., and Manish Jain Dr. "Performance Analysis of MUSIC and MVDR DOA Estimation Algorithm." International Journal of Engineering and Management Research 8, no. 2 (2018): 50–55. https://doi.org/10.5281/zenodo.3361959.

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The communication systems use concept of smart antennas, which is based on digital signal processing algorithms. In this way, the smart antennas system becomes capable to locate and track signals by the both: users, interferers and dynamically adapts the antenna pattern to enhance the reception in Signal-of-Interest direction and minimizing interference in Signal-of-Not-Interest (SONI) direction. Hence, Space Division Multiple Access system (SDMA), which uses smart antennas, is being used more often in wireless communications, because it shows improvement in channel capacity and co-channel int

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Olivová, Jana, Miroslav Popela, Marie Richterová, and Eduard Štefl. "Use of 3D Printing for Horn Antenna Manufacturing." Electronics 11, no. 10 (2022): 1539. http://dx.doi.org/10.3390/electronics11101539.

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This article describes the manufacturing of a horn antenna using a 3D commercial printer. The horn antenna was chosen for its simplicity and practical versatility. The standardised horn antenna is one of the most widely used antennas in microwave technology. A standardised horn antenna can be connected to standardised waveguides. The horn antenna has been selected so that this antenna can be fabricated by 3D printing and thus obtain the equivalent of a standardised horn antenna. This 3D horn antenna can then be excited by a standardised waveguide. The 3Dprinted horn antenna with metallic layer

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Vedenkin, Denis Andreevich, Yuri Evgenevich Sedelnikov, and Aydar Revkatovich Nasybullin. "Antenna Arrays Focused on Broadband Signals." Journal of Telecommunications and Information Technology, no. 2 (June 30, 2016): 95–102. http://dx.doi.org/10.26636/jtit.2016.2.726.

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Broadband and ultra-wideband signals are increasingly used in modern radio systems. Traditional performance of evaluation antennas operating with narrowband signals are not always adequately reflect the characteristics of broadband antennas, at least in view of the frequency dependence of the antenna pattern. Accounting for broadband signals the antennas becomes important in the low-frequency range of the spectrum. Systems using these types of signals may include control of the atmosphere and measuring its frequency-selective properties in the range meter and decameter wavelengths. Possibility

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Shen, Lingrong, Wei Luo, Youming Miao, and Gui Liu. "Combined Shark-Fin Rooftop Antenna for LTE, WLAN and BeiDou Applications." Electronics 13, no. 7 (2024): 1324. http://dx.doi.org/10.3390/electronics13071324.

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This paper presents rooftop automobile antennas designed for Long-Term Evolution (LTE), Wireless Local Area Network (WLAN) and navigation system applications. The proposed antennas are housed within a shark-fin structure on the car’s roof, and comprise a main antenna and a diversity antenna. The main antenna and diversity antenna combine for spatial diversity, receiving and processing the same signal to optimize signal quality. To accommodate the limited space within the shark-fin housing, various miniaturization and multiband techniques are utilized. The hexagonal substrate is more closely fi

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Chang, Z., P. Lyu, and B. Peng. "Differentiated Reception Modes Based Multiple Access." Wireless Communications and Mobile Computing 2022 (October 11, 2022): 1–9. http://dx.doi.org/10.1155/2022/5328007.

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In recent years, the continuous increase in wireless data services and users’ traffic demand has been imposing great challenges on traditional multiple access control (MAC) methods. Some existing MAC techniques improve the communication system’s spectral efficiency (SE) via signal processing based cochannel interference (CCI) management. However, no interference management (IM) is free, i.e., its realization is based on the consumption of some communication resources, such as power and degree-of-freedom (DoF), which can also be used for the user’s desired data transmission. To lessen the resou

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Swati, Patidar Kishor Kumbhare Sanjay Chouhan. "IMPROVEMENT OF SPECTRAL EFFICIENCY AND POWER CONTROL OF SMART ANTENNA." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 5 (2017): 736–41. https://doi.org/10.5281/zenodo.801268.

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The smart antennas are antenna arrays with smart signal processing algorithms used to identify spatial signal signature such as the direction of arrival (DOA) of the signal, and one of the most important processes is beam forming. In the most important function in beam forming is changing beam pattern of antenna for a particular angle. In the algorithm, a set of position and velocity for angles and amplitudes of antenna currents has been generated to optimized solution in desired direction. The signal gain and interference ratio are compared with genetic algorithm method. The factors that are

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Mikki, Said. "The antenna spacetime system theory of wireless communications." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 475, no. 2224 (2019): 20180699. http://dx.doi.org/10.1098/rspa.2018.0699.

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A general deterministic spacetime system theory of antennas suitable for the analysis and design of wireless communication links is rigorously developed using the recently introduced antenna current Green's function formalism. We provide the first complete derivation of the antenna spatio-temporal response to a delta source using only electromagnetic Green's functions, effectively eliminating all field and current distributions in the final expressions. While the theory works well in both space and time, it puts into sharper focus how the spatio-temporal structure of electromagnetic processes

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Milivojčević, Marko, Nenad Tolić, and Mijat Štimac. "Potential to use microstrip patch instead of dipole antennas in 2.4 GHz wireless sensor networks." Telfor Journal 14, no. 1 (2022): 44–48. http://dx.doi.org/10.5937/telfor2201044m.

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This paper describes the process of designing, simulating and measuring antenna parameters in order to perform a comparative analysis of the performance of microstrip patch antennas and dipole antennas intended for use in wireless sensor networks. The implemented antennas are designed for the unlicensed ISM band of 2.402-2.480 GHz as one of the most widely used bands for this type of network. The patch antenna was created based on calculation and tested in simulation software, and then adjusted with appropriate measurements to suit the intended purpose. Measurements in real conditions were mad

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Wang, Wen-Qin. "Virtual Antenna Array Analysis for MIMO Synthetic Aperture Radars." International Journal of Antennas and Propagation 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/587276.

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Multiple-input multiple-output (MIMO) synthetic aperture radar (SAR) that employs multiple antennas to transmit orthogonal waveforms and multiple antennas to receive radar echoes is a recently proposed remote sensing concept. It has been shown that MIMO SAR can be used to improve remote sensing system performance. Most of the MIMO SAR research so far focused on signal/data models and corresponding signal processing algorithm. Little work related to MIMO SAR antenna analysis can be found. One of the main advantages of MIMO SAR is that the degrees of freedom can be greatly increased by the conce

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Dawidowicz, Karol, Rafal Kazmierczak, and Krzysztof Swiatek. "SHORT STATIC GPS/GLONASS OBSERVATION PROCESSING IN THE CONTEXT OF ANTENNA PHASE CENTER VARIATION PROBLEM." Boletim de Ciências Geodésicas 21, no. 1 (2015): 213–30. http://dx.doi.org/10.1590/s1982-217020150001000014.

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So far, three methods have been developed to determine GNSS antenna phase center variations (PCV). For this reason, and because of some problems in introducing absolute models, there are presently three models of PCV receiver antennas (relative, absolute converted and absolute) and two satellite antennas (standard and absolute). Additionally, when simultaneously processing observations from different positioning systems (e.g. GPS and GLONASS), we can expect a further complication resulting from the different structure of signals and differences in satellite constellations. This paper aims at s

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Hult, Tommy, and Abbas Mohammed. "Power Constrained Space-Time Processing for Suppression of Electromagnetic Fields." Journal of Communications Software and Systems 1, no. 1 (2017): 71. http://dx.doi.org/10.24138/jcomss.v1i1.319.

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Active suppression of noise and vibrations is a well established field of research with many applications in acoustic and mechanical industries. In this paper we investigate the possibility of applying these adaptive active control methods with the aim of lowering the electromagnetic power density at a specific volume in space using the superposition principle and space-time processing employing the full MIMO (Multiple Input Multiple Output) antenna system setup. The application that we evaluated is a model of a mobile phone equipped with one ordinary transmitting antenna and two actuator-ante

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Samantaray, Barsa, Kumar Das, and Jibendu Roy. "Comparison of the performance of artificial neural network with variable step-size adaptive algorithms for the beamforming of smart antenna for cellular networks." Facta universitatis - series: Electronics and Energetics 37, no. 2 (2024): 277–87. http://dx.doi.org/10.2298/fuee2402277s.

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A smart antenna is an antenna array that uses spatial diversity to identify the desired mobile station (MS) and reject the unwanted interference signal in a cellular network. Generally, adaptive signal processing algorithms are used for smart antenna beamforming, and one of the most common algorithms is the least mean square (LMS) algorithm. Here, the artificial neural network (ANN) is used for beamforming of smart antennas, and the performance of the ANN is compared with the performance of variable step-size LMS (VS-LMS) and variable step-size sign LMS (VS-SLMS) algorithms. The ANN has better

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Thompson, J. S. "Editorial: Antenna array processing techniques." IEE Proceedings - Radar, Sonar and Navigation 145, no. 1 (1998): 1. http://dx.doi.org/10.1049/ip-rsn:19981818.

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Wang, Xinhai, Liqiong Wu, Hua Chen, Wei Wang, and Zhaoping Liu. "Frequency-Reconfigurable Microstrip Patch Antenna Based on Graphene Film." Electronics 12, no. 10 (2023): 2307. http://dx.doi.org/10.3390/electronics12102307.

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Fifth-generation mobile communication systems must connect to multiple wireless networks. In order to enable a single device to match the frequency bands of multiple wireless networks, it is usually necessary to use multiple single-band or multi-band antennas, which occupy a large amount of space inside a given device. Using frequency-reconfigurable antennas to replace multiple single-function antennas is an effective way to solve this problem. In this paper, we propose a frequency-reconfigurable microstrip patch antenna based on graphene film, which fills the slot of the radiating patch with

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Mishra, Manisha, Anindita Khan, and Jibendu Roy. "Design of multiple-beam microstrip smart antenna for massive MIMO applications." Facta universitatis - series: Electronics and Energetics 37, no. 4 (2024): 655–69. https://doi.org/10.2298/fuee2404655m.

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To improve the capacity of a radio communication system, MIMO (multiple input, multiple output) wireless technology is used, where multiple antennas are installed at both the transmission and reception ends. At the receiving end, by combining the received signals from all antennas, the fading effect can be reduced, which increases signal-to-noise ratio (SNR) and minimizes the error rate. Wireless networks in multi-user environments need massive MIMO (MMIMO) systems as multiple antenna networks. The MMIMO installs large antenna arrays in the base stations, using a large number of transceivers w

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Bin Abdullah, Muhammad Azfar, Mohamad Kamal A. Rahim, Noor Asmawati Samsuri, Mohd Fairus, Mohd Khairul Hisham Ismail, and Huda A. Majid. "On human body transmission wearable diamond dipole antennas above engineered jackets." Indonesian Journal of Electrical Engineering and Computer Science 22, no. 3 (2021): 1513. http://dx.doi.org/10.11591/ijeecs.v22.i3.pp1513-1519.

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This paper presents the propagation of dual-band diamond dipole antenna on three various jackets. The jackets are purely fleece fabric with Shieldit fabric patches on top of it. The network analyzers with the flexible lossless coaxial cable are used to measure the communication of the antennas. The experiment involves a man with ideal body mass index (BMI) wearing the jackets by placing the flexible antennas on top of it. It is observed that the best on-body communication is by wearing the engineered jacket. The 10 dB improvements are observed when the antenna is positioned on top of engineere

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Srikar, D., Anveshkumar Nella, Ranjith Mamidi, et al. "A Novel Integrated UWB Sensing and 8-Element MIMO Communication Cognitive Radio Antenna System." Electronics 12, no. 2 (2023): 330. http://dx.doi.org/10.3390/electronics12020330.

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In this article, a cognitive radio (CR) integrated antenna system, which has 1 sensing and 24 communication antennas, is proposed for better spectrum utilization efficiency. In the 24 communication antennas, 3 different operating band antennas are realized with an 8-element MIMO configuration. The sensing antenna linked to port 1 is able to sense the spectrum that ranges from 2 to 12 GHz, whereas the communication 8-element MIMO antennas linked with ports 2 to 9, ports 10 to 17 and ports 18 to 25 perform operations in the 2.17–4.74 GHz, 4.57–8.62 GHz and 8.62–12 GHz bands, respectively. Mutual

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Fortes, Jana, Michal Švingál, Tamás Porteleky, Patrik Jurík, and Miloš Drutarovský. "Positioning and Tracking of Multiple Humans Moving in Small Rooms Based on a One-Transmitter–Two-Receiver UWB Radar Configuration." Sensors 22, no. 14 (2022): 5228. http://dx.doi.org/10.3390/s22145228.

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The paper aims to propose a sequence of steps that will allow multi-person tracking with a single UWB radar equipped with the minimal antenna array needed for trilateration. Its localization accuracy is admittedly limited, but on the other hand, thoughtfully chosen placement of antennas can increase the detectability of several humans moving in their immediate vicinity and additionally decrease the computational complexity of the signal processing methods. It is shown that the UWB radar measuring with high rate and fine range resolution in conjunction with properly tuned processing parameters

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Liu, Tieyu, Jing Li, Zhaofa Zeng, and Hai Liu. "Antenna Comparison of Different Antennas in Through-Wall Radar Human Vital Signs Recognition." Journal of Physics: Conference Series 2887, no. 1 (2024): 012058. http://dx.doi.org/10.1088/1742-6596/2887/1/012058.

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Abstract Through wall radar (TWR) is an essential technology in the post-disaster rescue of buried individuals. The human vital signs analysis of breathing, heartbeat, and other periodic motions is the information used to identify and classify the human target. In the TWR system, selecting a suitable antenna and processing weak signals due to wall clutter and weak human vital signals is essential. In this abstract, we compare the performance of different antennas in TWR human vital feature recognition. We introduce a threshold pixel-connectivity signal processing method to locate the human bod

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M. Africa, Aaron Don, Rica Rizabel M. Tagabuhin, and Jan Jayson S. D. Tirados. "Design and simulation of an adaptive beam smart antenna using MATLAB." Indonesian Journal of Electrical Engineering and Computer Science 21, no. 3 (2021): 1584. http://dx.doi.org/10.11591/ijeecs.v21.i3.pp1584-1593.

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<span id="docs-internal-guid-ad3b6b0d-7fff-2d92-685e-3d423ac2713f"><span>Signals transmitted over a long range of distance may pass through several obstacles and scatter, taking multiple paths to reach the receiver. Beamforming antennas are controlled electronically to adjust the radiation pattern following the first received signal. This allows the antenna to maximize the received signal and consequently, suppress the interfering signals received. A smart antenna should be able to diminish noise, increase the signal to noise ratio, and have better system competence. The adaptive b

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Chang, Haowei, Chunlei Pang, Liang Zhang, and Zehui Guo. "Rotating Single-Antenna Spoofing Signal Detection Method Based on IPNN." Sensors 22, no. 19 (2022): 7141. http://dx.doi.org/10.3390/s22197141.

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The traditional carrier-phase differential detection technology mainly relies on the spatial processing method, which uses antenna arrays or moving antennas to detect spoofing signals, but it cannot be applied to static single-antenna receivers. Aiming at this problem, this paper proposes a rotating single-antenna spoofing signal detection method based on the improved probabilistic neural network (IPNN). When the receiver antenna rotates at a constant speed, the carrier-phase double difference of the real signal will change with the incident angle of the satellite. According to this feature, t

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Sohel Rana, Md, Sifat Hossain, Shuvashis Biswas Rana, and Md Mostafizur Rahman. "Microstrip patch antennas for various applications: a review." Indonesian Journal of Electrical Engineering and Computer Science 29, no. 3 (2023): 1511. http://dx.doi.org/10.11591/ijeecs.v29.i3.pp1511-1519.

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<span lang="EN-US">This paper aims to review microstrip antennas for various applications. The design of microstrip patch antennas is a new research field developed for use in 5th generation communication applications. An antenna is a collection of multiple devices connected together that function as a single antenna to send or receive radio waves. Antennas can be of different shapes and sizes. The microstrip patch is an antenna pattern that is light in weight, low profile, and focuses on producing results. In the future, microstrip patch antennas may be used for some 6G communication sy

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Седельников, Ю. Е., Н. А. Тутьяров та Т. Р. Шагвалиев. "ДИАГНОСТИКА АМПЛИТУДНО-ФАЗОВОГО РАСПРЕДЕЛЕНИЯ С ИСПОЛЬЗОВАНИЕМ МЕТОДА ФОКУСИРОВКИ ПРИ ИЗМЕРЕНИИ В БЛИЖНЕЙ ЗОНЕ ИЗЛУЧЕНИЯ". Vestnik of Volga State University of Technology. Series Radio Engineering and Infocommunication Systems, № 4(48) (24 лютого 2021): 40–47. https://doi.org/10.25686/2306-2819.2020.4.40.

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Рассмотрены вопросы организации измерения амплитудно-фазового распределения антенн методом фокусировки. С целью повышения точности измерений предлагается использование датчика ближнепольной измерительной системы с равномерной диаграммой направленности. Для формирования равномерной диаграммы направленности (ДН) предлагается конструкция датчика с дополнительными вставками, выполненными из метаматериала. Introduction. Currently, the development and testing of special-purpose antennas often pose a need to control their aperture distributions with the use of the general-purpose equipment. Despite t

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Nurhayati, Nurhayati, Eko Setijadi, Alexandre Maniçoba de Oliveira, Dayat Kurniawan, and Mohd Najib Mohd Yasin. "Design of 1 × 2 MIMO Palm Tree Coplanar Vivaldi Antenna in the E-Plane with Different Patch Structure." Electronics 12, no. 1 (2022): 177. http://dx.doi.org/10.3390/electronics12010177.

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In this paper, 1 × 2 MIMO of Palm Tree Coplanar Vivaldi Antenna is presented that simulated at 0.5–4.5 GHz. Some GPR applications require wideband antennas starting from a frequency below 1 GHz to overcome high material loss and achieve deeper penetration. However, to boost the gain, antennas are set up in MIMO and this is costly due to the large size of the antenna. When configuring MIMO antenna in the E-plane, there is occasionally uncertainty over which antenna model may provide the optimum performance in terms of return loss, mutual coupling, directivity, beam squint, beam width, and surfa

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Alabed, Samer, Amer Alsaraira, Nour Mostafa, et al. "Two-way differential strategy for wireless sensor networks." Bulletin of Electrical Engineering and Informatics 12, no. 6 (2023): 3499–508. http://dx.doi.org/10.11591/eei.v12i6.6121.

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In this paper, a novel optimal two-way amplify and forward (AF) differential beamforming method for wireless sensor network is proposed. The proposed method is an advanced signal processing technique used to enhance the performance and reliability of the communication link by exploiting the diversity provided by multiple antennas. Unlike current state-of-the-art methods which require the knowledge of channel state information (CSI) at both transmitting and receiving antennas or at least at the receiving antennas, the suggested method does not need CSI at any transmitting or receiving antenna.

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Chung, Ming-An, Cheng-Wei Hsiao, Chih-Wei Yang, and Bing-Ruei Chuang. "4 × 4 MIMO Antenna System for Smart Eyewear in Wi-Fi 5G and Wi-Fi 6e Wireless Communication Applications." Electronics 10, no. 23 (2021): 2936. http://dx.doi.org/10.3390/electronics10232936.

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This paper proposes a small-slot antenna system (50 mm × 9 mm × 2.7 mm) for 4 × 4 multiple-input multiple-output (MIMO) on smart glasses devices. The antenna is set on the plastic temple, and the inverted F antenna radiates through the slot in the ground plane of the sputtered copper layer outside the temple. Two symmetrical antennas and slots on the same temple and series capacitive elements enhance the isolation between the two antenna ports. When both temples are equipped with the proposed antennas, 4 × 4 MIMO transmission can be achieved. The antenna substrate is made of polycarbonate (PC)

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Zheng, Zi Wei. "Iterative Channel Estimation Scheme for the WLAN Systems with the Multiple-Antenna Receivers." Advanced Engineering Forum 6-7 (September 2012): 871–75. http://dx.doi.org/10.4028/www.scientific.net/aef.6-7.871.

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Alleviate the multipath delay spread and suitable for broadband transmission efficiency, orthogonal frequency division multiplexing wireless local area network (WLAN) is widely used to assist inverse fast Fourier transform and fast Fourier transform operation domain. Orthogonal frequency division multiplexing is a blow to the broadcast channel multipath fading and high data throughput, transmission, wireless fading channel method, which is widely used to support high performance bandwidth-efficient wireless multimedia services. Several times in the transmitter and receiver antenna technology a

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Chen, Yi, Jiang Lu, Qing Guo, and Lei Wan. "3D printing of CF/nylon composite mold for CF/epoxy parabolic antenna." Journal of Engineered Fibers and Fabrics 15 (January 2020): 155892502096948. http://dx.doi.org/10.1177/1558925020969484.

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Parabolic antennas, which are wildly used as high-gain antennas for point-to-point communications, need many iterations of design-fabrication-test in parabolic antenna development. However, traditional molding via mechanical processing takes a long manufacturing cycle and high cost. In this paper, a 3D-printed CF/nylon composite parabolic mold for CF/epoxy parabolic antenna is studied. It’s found that the coefficient of thermal expansion (CTE) of 3D-printed CF/nylon composite is usually anisotropic due to the low adhesion between printed layers and the aligned short carbon fiber along the prin

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