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Artículos de revistas sobre el tema "Paper based antenna"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 7 de febrero de 2022

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1

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.

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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

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2

Rahmatia, Suci, Putri Wulandari, Nurul Khadiko, and Fitria Gani Sulistya. "Perbandingan Desain Antena Dipole dan Yagi-Uda Menggunakan Material Aluminium pada Frekuensi 470 – 890 MHz." JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI 3, no. 3 (2017): 140. http://dx.doi.org/10.36722/sst.v3i3.219.

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<p><em>Abstrak </em><strong> - Antena merupakan alat pemancar yang akrab dengan aktifitas sehari-hari dan mudah sekali dijumpai, di rumah, di gedung, bahkan pada alat komunikasi yang digunakan. Salah satu antena yang sering digunakan adalah antena televisi. Antena televisi yang sering digunakan adalah Yagi-Uda yang biasanya dipakai sebagai outdoor antena dan antena dipole yang biasanya digunakan untuk indoor antena. Masing – masing jenis antena memiliki kriteria dan keuntungan berdasarkan dari kebutuhan penggunaannya. Baik antena dipole maupun antena Yagi-Uda memiliki p

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3

Xingwei Ye, Xingwei Ye, Bowen Zhang Bowen Zhang, Yamei Zhang Yamei Zhang, Dan Zhu Dan Zhu, and and Shilong Pan and Shilong Pan. "Performance evaluation of optical beamforming-based wideband antenna array (Invited Paper)." Chinese Optics Letters 15, no. 1 (2017): 010013–10017. http://dx.doi.org/10.3788/col201715.010013.

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4

Le, Tuan Tu, Huy Hung Tran, and Ayman Abdulhadi Althuwayb. "Wideband Circularly Polarized Antenna Based on a Non-Uniform Metasurface." Applied Sciences 10, no. 23 (2020): 8652. http://dx.doi.org/10.3390/app10238652.

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This paper presents a non-uniform metasurface (MS)-based circularly polarized (CP) antenna that is able to perform with a wideband operation characteristic. A squared patch with truncated corners was chosen as a radiating CP source. Then, unlike the conventional CP MS antennas with a uniform MS, the proposed design employed a non-uniform MS placed above the driven patch. Apart from increasing the impedance bandwidth, the non-uniform MS was also capable of generating two additional CP bands in the high-frequency region, which contributed to significantly increasing the antenna’s overall perform

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5

Liu, Jingping, Safieddin Safavi-Naeini, Ying Wang, and Aidin Taeb. "A Fast Geometric Optics-Based Design Approach for Dielectric Rod Antennas." International Journal of Antennas and Propagation 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/141807.

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A simple and effective dielectric rod antenna design approach based on geometric optics and modal analysis is presented. The tapered antennas from microwave to terahertz can be readily designed with the equations presented in this paper. The radius of antenna is determined by the desired traveling wave mode inside the antenna. The field inside the antenna consists of the fundamental mode and the second mode. For the end-fire operation, there is only the fundamental mode. The length of the antenna is designed based on geometric optics theory so that most of the traveling wave will be converted

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6

Wang, Qi, Renjing Gao, Shutian Liu, and Chuan Liu. "Topology optimization-based design method of dual-band antennas." Multidiscipline Modeling in Materials and Structures 13, no. 1 (2017): 11–25. http://dx.doi.org/10.1108/mmms-07-2016-0030.

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Purpose Recent development of wireless communication devices dictates that miniaturization, multi-functions and high integration are the important factors for antenna structures. This has resulted in the requirement of antennas with dual or multi-frequency operations. Although the dual-band antennas can be achieved through the experience-based configuration selection with the parameter adjustment, it is still a challenging problem to design an antenna with specific dual-frequency operations effectively. The purpose of the paper is to develop an effective design method to guide the design of an

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7

Reiche, Enrico, and Michael Schneider. "Challenges in the EM-based design of modern telecommunication satellite antennas." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 4 (2018): 1461–80. http://dx.doi.org/10.1108/compel-09-2017-0378.

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Purpose This paper aims to introduce design challenges of modern telecommunication satellite antennas. The antenna farms accommodated on a satellite are systems of high complexity. From the radio frequency (RF) point of view, the most important design issues, e.g. high power applications in space (vacuum) or typical antenna scenarios (single/multi beam antennas), and their solution are considered. Design/methodology/approach The paper presents the application of electro-magnetic (EM) field simulation in the design and optimisation process. The design of a telecommunications satellite antenna s

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8

Bashar, Dr Abul. "Artificial Intelligence Based LTE MIMO Antenna for 5th Generation Mobile Networks." September 2020 2, no. 3 (2020): 155–62. http://dx.doi.org/10.36548/jaicn.2020.3.002.

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Artificial intelligence based long term evolution multi in multi output antenna supporting the fifth generation mobile networks is put forth in the paper. The mechanism laid out in paper is devised using the monopole-antenna integrated with the switchable pattern. The long term evolution based multiple input and multiple output antenna is equipped with four antennas and capable of providing a four concurrent data streams quadrupling the theoretical maximum speed of data transfer allowing the base station to convey four diverse signals through four diverse transmit antennas for a single user eq

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9

O, Jin, and Choi. "A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications." Applied Sciences 9, no. 15 (2019): 3157. http://dx.doi.org/10.3390/app9153157.

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In this paper, we propose a compact four-port coplanar antenna for cognitive radio applications. The proposed antenna consists of a coplanar waveguide (CPW)-fed ultra-wideband (UWB) antenna and three inner rectangular loop antennas. The dimensions of the proposed antenna are 42 mm × 50 mm × 0.8 mm. The UWB antenna is used for spectrum sensing and fully covers the UWB spectrum of 3.1–10.6 GHz. The three loop antennas cover the UWB frequency band partially for communication purposes. The first loop antenna for the low frequency range operates from 2.96 GHz to 5.38 GHz. The second loop antenna is

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10

Hu, Kai Yu, Kai Wang, Pei Zhang Wu, and Yi Jiang. "Analysis for Electrical Performance of Antenna Considering Gravity Deformation Based on Different Band and Elevation Angle." Applied Mechanics and Materials 863 (February 2017): 266–72. http://dx.doi.org/10.4028/www.scientific.net/amm.863.266.

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Abstract.In order to ensure higher accuracy and better electrical performance of large antennas in future,this paper does some research for deformation of antenna’s reflector:modeling for 25m antenna and reappearing deformation when elevation changes every 15° just considering gravity by using ANSYS.Using results of simulation obtains deformation error curves with elevation changes, creates the conditions for compensating distortion and has a certain value. By using Ruze formula, deeply studies the regular about antenna’s electrical performance influenced by deformation because of elevation ch

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11

Zheng, Bowen, Songlin Sun, and Guoyuan Shao. "Cooperative Antenna Selection Method for Directional Antenna Ad Hoc Networks Based on ALOHA." Wireless Communications and Mobile Computing 2021 (March 31, 2021): 1–15. http://dx.doi.org/10.1155/2021/5583653.

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In recent years, directional antennas or phased array antennas are being widely used in communication systems due to the higher antenna gains. However, without external time synchronization and angle synchronization, the unsynchronized node usually takes a long time to synchronize with the existing nodes due to the narrow beams. Although the multibeam transmission or the digital phased array antenna can reduce this problem, it is clear that the cost of the digital phased array antenna is currently too high. Without external time synchronization and angle synchronization, a cooperative antenna

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12

Yuanqing, Zhao, Qiu Jinghui, and Wang Wei. "Design of Monopole Antenna Based on Fractal Geometry." International Journal of Antennas and Propagation 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/352126.

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This paper presents a circular disc monopole antenna based on fractal geometry. The antenna is designed to be applied in UWB systems. So it is essential to ensure that the bandwidth of the antenna ranges from 3.1 GHz to 10.6 GHz, that is, IEEE 802.15.3a. However, the proposed antenna has achieved working in the required bandwidth. Compared to the antennas illustrated in most similar literatures, the proposed antenna has a much smaller size, which makes the antenna possible to be integrated with portable devices. Firstly, the antenna was designed through CST Microwave Studio. Then, the antenna

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13

Geng, Peng, Shu Hui Yang, Yue Wang, and Yin Chao Chen. "Miniaturization Design of the 5.8GHz RFID Antenna Based on Metamaterial." Applied Mechanics and Materials 577 (July 2014): 632–35. http://dx.doi.org/10.4028/www.scientific.net/amm.577.632.

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In this paper we designed a 5.8GHZ microstrip antenna whose relative bandwidth is 3.77% and return loss is-36.941dB. It meets the needs of RFID systems.Besides, the resonant frequency of the antennas is reduced to 5.2GHZ, after adding the “I” ring resonator. Also, the paper shows that the other performance of the antenna still meet the RFID system requirements. It is 47.1% of the original size after adjusting the resonant frequency of the antenna to 5. 8GHz.

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14

Zhang, Bin, Jingwei Zhang, Chengguo Liu, Zhi Wu, and Daping He. "Equivalent Resonant Circuit Modeling of a Graphene-Based Bowtie Antenna." Electronics 7, no. 11 (2018): 285. http://dx.doi.org/10.3390/electronics7110285.

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The resonance performance analysis of graphene antennas is a challenging problem for full-wave electromagnetic simulators due to the trade-off between the computer resource and the accuracy of results. In this paper, an equivalent circuit model is presented to provide a concise and fast way to analyze the graphene-based THz bowtie antenna. Based on the simulated results of the frequency responses of the antenna, a suitable equivalent circuit of Resistor-Inductor-Capacitor (RLC) series is proposed to describe the antenna. Then the RLC parameters are extracted by considering the graphene bowtie

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15

Palantei, Elyas, Arif Hidayat, Wardi Wardi, et al. "6 Monopole Elements Array Intelligent Antennas for IoT Based Environmental Surveillance Network." EPI International Journal of Engineering 3, no. 2 (2021): 126–31. http://dx.doi.org/10.25042/epi-ije.082020.06.

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Three types of 6 monopoles array intelligent antennas was numerically and practically examined. The main purposes of the investigation is to guarantee that those designed antennas are feasible to implement and to install in a particular IoT based environmental surveillance network configuration. The basic differences of the three intelligent antennas lied on the frequency operations (i.e. 433 MHz, 875-915 MHz and 2.5 GHz) and the actual environment operations (whether for indoor or outdoor). The extreme differences of such frequency operations, of course, affecting the differences on the whole

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16

Li, Linpeng, Shengze Ye, Jianchun Xu, et al. "Split-ring resonator-based compact microstrip antenna." Modern Physics Letters B 33, no. 04 (2019): 1950043. http://dx.doi.org/10.1142/s021798491950043x.

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Compact microstrip antennas based on split-ring resonator (SRR) structure are proposed and fabricated in this paper. The resonant frequency of the antennas is discussed upon different geometric structures. The influencing mechanism of the antenna parameters on resonant frequency is analyzed. The analytical and experimental analyses are carried out and proved that the resonant frequency can be controlled from 13.5 GHz to 17.2 GHz by tuning some of the crucial parameters. A good agreement between the simulations and the measurement results suggests that the proposed antenna can be designed at di

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17

Taygin, V. B., and А. V. Lopatin. "Design of the mirror antenna of a spacecraft with the ultralight high precision size-stable reflector." Spacecrafts & Technologies 3, no. 3 (2019): 121–31. http://dx.doi.org/10.26732/2618-7957-2019-3-121-131.

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The paper discusses the existing design of mirror antennas used on spacecraft. The requirements are formulated under which the reliable performance of antennas is ensured under operating conditions. Innovative construction of the space high frequency axisymmetric mirror antenna of an ultralight class is presented. Antenna’s body consists of several conjugate carbon fiber shells. Antenna’s design technology which gives an opportunity to create the shell of a reflector with minimal deflection from a full-paraboloid is developed. Using the finite element method, a parametric modal analysis of the

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18

Patil, Kasturi Sudam, and Elizabeth Rufus. "A review on antennas for biomedical implants used for IoT based health care." Sensor Review 40, no. 2 (2019): 273–80. http://dx.doi.org/10.1108/sr-01-2019-0020.

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Purpose The paper aims to focus on implantable antenna sensors used for biomedical applications. Communication in implantable medical devices (IMDs) is beneficial for continuous monitoring of health. The ability to communicate with exterior equipment is an important aspect of IMD. Thus, the design of an implantable antenna for integration into IMD is important. Design/methodology/approach In this review, recent developments in IMDs, three types of antenna sensors, which are recommended by researchers for biomedical implants are considered. In this review, design requirements, different types o

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19

IBRAHIM, NUR. "Pendeteksian Lokasi Sumber Noise (Partial Discharge) secara Tiga Dimensi menggunakan Antenna Array." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 3, no. 2 (2015): 106. http://dx.doi.org/10.26760/elkomika.v3i2.106.

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ABSTRAKPada penelitian ini akan dilakukan simulasi teknik pendeteksian lokasi sumber noise berupa partial discharge (PD) pada peralatan tegangan tinggi, dengan menggunakan susunan antena yang terdiri dari empat buah antena monopole sebagai sensor untuk mendeteksi gelombang elektromagnetik (EM) yang dipancarkan dari partial discharge (PD). Algoritma yang digunakan mengacu kepada time difference of arrival (TDOA) dari sinyal yang diterima antar antena (dengan menjadikan salah satu antena sebagai antena referensi). Metode yang digunakan untuk menentukan TDOA adalah metode Akaike Information Crite

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20

Nair, Deepukumar, Glenn Oliver, and Jim Parisi. "Qualification of Polyimide Based Coverlays for 900 MHz and 2.40 GHz Microstrip Antenna Applications." International Symposium on Microelectronics 2012, no. 1 (2012): 001078–80. http://dx.doi.org/10.4071/isom-2012-thp24.

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Organic coverlays are required to protect microstrip circuits in most applications. The presence of coverlay can potentially influence the performance of microstrip antennas. This paper describes the qualification of polyimide based coverlays for microstrip antennas both in 900 MHz and 2.50 GHz frequency bands. An Inverted F-shaped antenna fabricated on FR-4 dielectric is used as the test vehicle and two different coverlay materials are tested with respect to key parameters like resonant frequency, S11 bandwidth, antenna gain, frequency detuning, and radiation pattern. The data presented in th

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21

Rmili, Hatem, Donia Oueslati, Imen Ben Trad, Jean Marie Floch, Abdullah Dobaie, and Raj Mittra. "Investigation of a Random-Fractal Antenna Based on a Natural Tree-Leaf Geometry." International Journal of Antennas and Propagation 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/2084835.

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In this paper, we investigate a new printed antenna based on the 2D image of a fractal tree-leaf geometry by studying the effect of the irregular boundary of the proposed antenna on its radiation characteristics. Both the impedance matching properties and the radiation patterns of the antenna are studied over the frequency band 1–6 GHz. Four configurations are designed by increasing the complexity of the structure, which ranges from iteration 0 to iteration 3. The fractal properties of the proposed tree-leaf antenna are then compared to those of a conventional fractal antenna with smooth edges

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22

Hammu-Mohamed, Bilal, Ángel Palomares-Caballero, Cleofás Segura-Gómez, Francisco G. Ruiz, and Pablo Padilla. "SIW Cavity-Backed Antenna Array Based on Double Slots for mmWave Communications." Applied Sciences 11, no. 11 (2021): 4824. http://dx.doi.org/10.3390/app11114824.

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This paper presents a cavity-backed antenna array in substrate integrated waveguide (SIW) technology in the millimeter-wave frequency band. The proposed antenna design uses double slots as radiating elements instead of conventional single slots. The double slots allow better control in the design of the operating frequency bands of the cavity-backed antenna. The performance of the cavity-backed antennas with single and double slots is compared to assess the enhanced behavior of the double slots. As a proof of concept, a 2 × 2 array of cavity-backed antennas is designed, manufactured, and measu

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23

Et. al., Salah Mohmad Alsadiq Aboghsesa,. "Roger 3450 Vs RF4 Martials - Based Frequency And Pattern Reconfigurable Rectangular Patch Slot Antennas For RFID Applications." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 6 (2021): 1145–51. http://dx.doi.org/10.17762/turcomat.v12i6.2432.

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Rectangular Patch Slot Antennas RPSA are getting becoming more likable and popular for practice in wireless implementations such as RFID applications especially in the UHF band thanks to its low-profile structure. This kind of antenna is able to deliver large communication distances but this antenna coverage is very weak which is part of the main drawbacks of these antennas. In this paper, Rectangular Patch Slot Antenna RPSA with different slots has been designed and simulated to be suitable for RFID applications. Circular polarized CP antenna that has been designed to use feed structure with

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24

Monirujjaman Khan, Mohammad, Kaisarul Islam, Md Nakib Alam Shovon, Mehedi Masud, Mohammed Baz, and Mohammed A. AlZain. "Various Textiles-Based Comparative Analysis of a Millimeter Wave Miniaturized Novel Antenna Design for Body-Centric Communications." International Journal of Antennas and Propagation 2021 (July 31, 2021): 1–14. http://dx.doi.org/10.1155/2021/2360440.

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A 60 GHz compact and novel shaped microstrip-fed antenna based on a textile substrate for body-centric communications has been proposed in this paper. The antenna has a partial ground, and the textile substrate is made up of 1.5 mm thick 100% polyester. Two rectangular sections from the patch antenna’s radiator were removed to give the antenna a swan-shaped appearance. The antenna was designed and simulated using computer simulation technology (CST) microwave studio software. Simulated results show that, in free-space, the antenna achieved a high bandwidth of 11.6 GHz with a center frequency o

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25

Huang, Lian-Fen, Sha-Li Zhou, Yi-Feng Zhao, and Han-Chieh Chao. "A Study on the Distributed Antenna Based Heterogeneous Cognitive Wireless Network Synchronous MAC Protocol." Mobile Information Systems 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/868346.

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This paper introduces distributed antennas into a cognitive radio network and presents a heterogeneous network. The best contribution of this paper is that it designs a synchronous cognitive MAC protocol (DAHCWNS-MAC protocol: distributed antenna based heterogeneous cognitive wireless network synchronous MAC protocol). The novel protocol aims at combining the advantages of cognitive radio and distributed antennas to fully utilize the licensed spectrum, broaden the communication range, and improve throughput. This paper carries out the mathematical modeling and performance simulation to demonst

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26

He, Di, and Yunlv Hong. "An Improved Tabu Search Algorithm Based on Grid Search Used in the Antenna Parameters Optimization." Mathematical Problems in Engineering 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/947021.

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In the mobile system covering big areas, many small cells are often used. And the base antenna’s azimuth angle, vertical down angle, and transmit power are the most important parameters to affect the coverage of an antenna. This paper makes mathematical model and analyzes different algorithm’s performance in model. Finally we propose an improved Tabu search algorithm based on grid search, to get the best parameters of antennas, which can maximize the coverage area and minimize the interference.

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27

Liu, Han, Chengyou Yin, Weidong Gao, and Yulong Sun. "Optimization and Design of Wideband Antenna Based onQFactor." International Journal of Antennas and Propagation 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/971646.

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A wideband antenna is designed based onQfactor in this paper. Firstly, the volume-surface integral equations (VSIEs) and self-adaptive differential evolution algorithm (DEA) are introduced as the basic theories to optimize antennas. Secondly, we study the computation ofQof arbitrary shaped structures, aiming at designing an antenna with maximum bandwidth by minimizing theQof the antenna. This method is much more efficient for onlyQvalues at specific frequency points that are computed, which avoids optimizing bandwidth directly. Thirdly, an integrated method combining the above method with VSIE

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28

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.

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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

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29

Ou, Yang, and Yi Ming Wang. "Spectrum Sensing Optimization Based on Multiple Antennas for Cognitive Radio Networks." Applied Mechanics and Materials 443 (October 2013): 363–67. http://dx.doi.org/10.4028/www.scientific.net/amm.443.363.

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To protect the primary user and improve the credibility of spectrum sensing, a spectrum sensing optimization algorithm based on antenna selection is proposed in this paper. In the case where the channel coefficient and signal-to-noise ratio are not known, one antenna weighting and selection algorithm based on auto-correlation is proposed. This algorithm can also be used to distinguish whether it is necessary for antennas selection so as to optimize spectrum sensing performance. Based on auto-correlation ratio, selecting parts of the antennas to cooperatively sense spectrum can maximize the det

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Setiyanto, Budi, Risanuri Hidayat, and I. Wayan Mustika. "Picture-Based Multiple-AntennaTechnique for the DVB-T2 Receiver." International Journal of Electronics and Telecommunications 63, no. 3 (2017): 261–67. http://dx.doi.org/10.1515/eletel-2017-0035.

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Abstract Deep-fading can decline the quality of the received signal to below threshold, and interrupts the reception-success (generating an outage or time-out). In DVB-T2 (Digital Video Broadcasting Terrestrial Second Generation) receiver, such interruption can be identified from the displayed-picture. Multiple-antenna is one of techniques to mitigate such problem. This paper presents a multiple-antenna method for receiving the DVB-T2 signal. At any time, one of antennas is selected where the selection action is controlled by the recovered-picture. In case of using two antennas, field-measurem

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31

Ullah, Md, Mohammad Islam, Touhidul Alam, and Farhad Ashraf. "Paper-Based Flexible Antenna for Wearable Telemedicine Applications at 2.4 GHz ISM Band." Sensors 18, no. 12 (2018): 4214. http://dx.doi.org/10.3390/s18124214.

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This paper demonstrates the performance of a potential design of a paper substrate-based flexible antenna for intrabody telemedicine systems in the 2.4 GHz industrial, scientific, and medical radio (ISM) bands. The antenna was fabricated using 0.54 mm thick flexible photo paper and 0.03 mm copper strips as radiating elements. Design and performance analyses of the antenna were performed using Computer Simulation Technology (CST) Microwave Studio software. The antenna performances were investigated based on the reflection coefficient in normal and bent conditions. The total dimensions of the pr

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32

Dubey, Reema, Vinod Kumar Singh, Akash Kumar Bhoi, and Zakir Ali. "Realization of trophy shaped flexible wearable antenna based on foam substrate." International Journal of Engineering & Technology 7, no. 2.12 (2018): 222. http://dx.doi.org/10.14419/ijet.v7i2.12.11284.

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The endeavor of this paper is to analyze a light weighted flexible antenna for modern communication system. There are three different patch designs with operating frequency 4GHz. These proposed antennas are compact in size, shows high directivity and large bandwidth. Ex-pandable polystyrene foam is used as a substrate because such antenna are bendable, wearable, cheap, require less attention and having good features like low dielectric constant, low loss tangent and better efficiency. The antenna parameters like reflection coefficient, gain, band-width, radiation pattern are analyzed. The refl

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33

Petropoulos, Ioannis, Konstantinos Voudouris, Raed A. Abd-Alhameed, Steve M. R. Jones, and Nikos Athanasopoulos. "A Novel Design of Microstrip Arrays for Relay-Based Wireless Network." International Journal of Antennas and Propagation 2011 (2011): 1–10. http://dx.doi.org/10.1155/2011/870183.

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A relay station (RS) is a smart transceiver used under a 4G wireless network in order to extend network's coverage and capacity. It uses an antenna system that includes an antenna for connecting the relay with the end users (access link) and the RS with the base station (backhaul link). In this paper, a 7.9 dBi access and 11.4 dBi backhaul antennas are presented for the frequency range of 3.3 to 3.8 GHz. The antennas are simulated and fabricated, and relevant measured results in terms of return loss and radiation pattern are presented and analyzed. Considering that the planes of those two ante

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34

Kim, Dang-Oh, Che-Young Kim, and Dae-Geun Yang. "Flexible Hilbert-Curve Loop Antenna Having a Triple-Band and Omnidirectional Pattern for WLAN/WiMAX Applications." International Journal of Antennas and Propagation 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/687256.

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A triple-band flexible loop antenna is proposed for WLAN/WiMAX applications in this paper. The proposed antenna is formed by the third-order Hilbert-curve and bending type structure which provides flexible characteristics. Even though the radius of the curvature for bending antennas is changed, a triple-band feature still remains in the proposed antenna. Moreover, the antenna exhibits the characteristics of omnidirectional radiation pattern and circular polarization. To verify the receiving performance of antenna, a simulation on the antenna factor was conducted by an EM simulator. Based on th

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Taneja, Ashu, and Nitin Saluja. "A Comparison of Norm Based Antenna Selection and Random Antenna Selection with Regard to Energy Efficiency in Wireless System with Large Number of Users." International Journal of Sensors, Wireless Communications and Control 10, no. 2 (2020): 189–96. http://dx.doi.org/10.2174/2210327909666190319145555.

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Background: The paper considers the wireless system with large number of users (more than 50 users) and each user is assigned large number of antennas (around 200) at the Base Station (BS). Objective: The challenges associated with the defined system are increased power consumption and high complexity of associated circuitry. The antenna selection is introduced to combat these problems while the usage of linear precoding reduces computational complexity. The literature suggests number of antenna selection techniques based on statistical properties of signal. However, each antenna selection tec

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Zhang, Zufan, Jie Zhang, and Shaohui Sun. "Model of Handover and Traffic Based on Cellular Geometry with Smart Antenna." International Journal of Antennas and Propagation 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/646053.

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Based on the application of smart antennas in cellular mobile communications, this paper introduces the impact of the width of the antenna beams playing on the dwell time probability density function in cellular geometry with smart antenna. The research results indicate that the smart cell structure can improve the dwell time of users within the cell and improve the traffic system performance.

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Jafargholi, Amir, Manouchehr Kamyab, and Mehdi Veysi. "PMC-Based Waveguide-Fed Slot Array." ISRN Communications and Networking 2011 (September 21, 2011): 1–5. http://dx.doi.org/10.5402/2011/941070.

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Perfect magnetic conductors (PMCs) can help in the enhancement of antenna impedance bandwidth using their capability of reflecting the incident waves without phase reversal. The purpose of this paper is to show the advantages of using a perfect magnetic conductor in antenna engineering. The goal is to use it in waveguide-fed slot array antennas, increasing both the antenna impedance and radiation bandwidths. To this aim, a PMC-based rectangular waveguide composed of longitudinal slots is convenient. The impedance of the proposed array structure is calculated analytically. To compare analytical

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Zhang, Yan Rong, Ji Jun Wang, Zhi Pan Zhu, and Lei Lei Gong. "Effect of Rectangular Microstrip Antenna with Cross Metal Patches Based on Near-Zero-Index." Applied Mechanics and Materials 602-605 (August 2014): 2811–15. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.2811.

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In this paper, cross metal patches are inserted inside the conventional rectangular microstrip antenna, and thus it can work at two frequencies. The finite difference time domain (FDTD) method is selected to study effect of this left-handed metamaterial with near-zero-index of refraction. Compared with conventional rectangular microstrip antenna, effect of near-zero-index from positive and negative on conventional rectangular microstrip antenna are studied. Simulation results show this antenna works at two frequencies. Compared with conventional microstrip antenna, near-zero-index can improve

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Pandian, Manickam Karthigai, and Thangam Chinnadurai. "Design and Optimization of Rectangular Patch Antenna Based on FR4, Teflon and Ceramic Substrates." Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) 12, no. 4 (2019): 368–73. http://dx.doi.org/10.2174/2352096511666180705121554.

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Background: Modern communication devices are very much dependent on the operation of low profile antennas. The objective of this paper is to perform the design and simulation of a rectangular microstrip patch antenna at a resonant frequency of 9.5 GHz. Methods: Design of the antenna is given with various substrates like FR4, Teflon and Ceramic substrates at the desired frequency. For each substrate, the performance of the antenna is measured in terms of its return loss and Voltage Standing Wave Ratio (VSWR). Results: Ansoft High-Frequency Structure Simulator is used to simulate the antenna cha

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Ali, Jawab, Noorsaliza Abdullah, Roshayati Yahya, Ezri Mohd, Ariffuddin Joret, and Norshidah Katiran. "Bistatic configurational analysis of ultra-wideband antenna for detection applications." Indonesian Journal of Electrical Engineering and Computer Science 13, no. 2 (2019): 702. http://dx.doi.org/10.11591/ijeecs.v13.i2.pp702-707.

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<span>With the advancement in technology, antennae are becoming a popular components to be used in various applications. Following the trend, a compact design of ultra-wideband (UWB) bistatic configuration of the antenna is presented in this paper using ground penetrating radar (GPR) technology specifically for detection applications. The antenna is first designed and simulated using defected ground structure (DGS) for impedance bandwidth with the obtained gain of around 6.2 dB and return losses from 3-16 GHz. Later the complete detection model is aimed to study and for this purpose CST

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Czawka, Giennadij, and Marek Garbaruk. "Matrix Analysis and Pulse Transmission of Antenna Array for MIMO UWB Systems." International Journal of Electronics and Telecommunications 57, no. 1 (2011): 91–96. http://dx.doi.org/10.2478/v10177-011-0013-z.

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Matrix Analysis and Pulse Transmission of Antenna Array for MIMO UWB Systems This paper presents a theoretical matrix analysis of antenna structure consisting of two double-element planar antennas for ultra-wideband (UWB) application in 2*2 MIMO indoor communication systems. The structure and characteristics of pla-nar two-element UWB antenna are presented. Two matrix models of MIMO antenna system are represented in the paper. A stan-dard MIMO signal transmission matrix without taking into con-sideration the coupling between antennas is described. A new ap-proach to a full electromagnetic anal

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Martínez-Lozano, Andrea, Carolina Blanco-Angulo, Héctor García-Martínez, et al. "UWB-Printed Rectangular-Based Monopole Antenna for Biological Tissue Analysis." Electronics 10, no. 3 (2021): 304. http://dx.doi.org/10.3390/electronics10030304.

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This paper presents the design of a printed step-type monopole antenna for biological tissue analysis and medical imaging applications in the microwave frequency range. The design starts from a very simple and widely known rectangular monopole antenna, and different modifications to the antenna geometry are made in order to increase the bandwidth. The antenna dimensions are optimized by means of a parametric analysis of each dimension using a 3-D electromagnetic simulator based on the finite element method. The optimized antenna, with final dimensions of 40 × 36 mm2, is manufactured onto a low

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Beigi, Payam, Yashar Zehforoosh, Mirhamed Rezvani, and Javad Nourinia. "Evaluation of a compact triangular crinkle-shaped multiband antenna with circular polarized for ITU band based on MADM method." Circuit World 45, no. 4 (2019): 292–99. http://dx.doi.org/10.1108/cw-04-2019-0040.

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Purpose This paper aims to present a new triangular crinkle-shaped multiband antenna for multiband operation. Design/methodology/approach This paper refers to increasing the number of resonance frequency by appending triangular crinkle. Experimental frequency results of the presented antenna are 1.60/2.80/4.00/5.80/7.12/8.32/10.06 GHz. Findings The triangular shaped antenna is manufactured on a low-priced FR-4 substrate with small size and tested. The reported antenna with full size 14 × 14 mm2 with a half elliptical ground sheet on the bottom plane of the substrate and a triangular crinkle st

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Hamidah Abd Hamid, Saidatul, Goh Chin Hock, and M. T. Ali. "Analysis of Performance on Circular Patch Antenna Based on Different Feeding Techniques." International Journal of Engineering & Technology 7, no. 4.1 (2018): 81. http://dx.doi.org/10.14419/ijet.v7i4.1.28230.

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This paper presents a simulation and analysis of a circular patch antenna with different feeding techniques. The objectives of this analysis are to design the microstrip circular patch antennas using five types of feedings techniques which are stepped feed, inset feed, coaxial feed, aperture coupled feed, and proximity feed, to analyze and compares the performance of the antenna design. Performance characteristics of the antenna such as return loss S11 parameter <-10dB, directivity, gain, bandwidth, side lobe level, beam width, and voltage standing wave ratio (VSWR) parameters of each of th

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Han, Chong-Zhi, Guan-Long Huang, Tao Yuan, and Ju-Zhen Wang. "Design of a T-Shaped Antenna Based on Characteristic Mode Manipulation for Metal-Framed Handset Application." Electronics 7, no. 10 (2018): 209. http://dx.doi.org/10.3390/electronics7100209.

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Recently, metal-framed handset antennas have aroused much attention due to their fantastic appearance and superior robustness. In this paper, a T-shaped antenna suitable for integration with a USB connector is proposed for metal-framed handset application by utilizing the theory of characteristic modes (TCM). Five eigenmodes, one for the lower band and four for the higher band, were merged by a T-shaped metal frame, a feed point, and two shorting pins, as well as three radio frequency (RF) switches so as to broaden the antenna’s operating bandwidth. A prototype was fabricated in order to verif

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Zeng, Xin, and Alain Sibille. "Statistical Modeling of Antenna: Urban Equipment Interactions for LTE Access Points." International Journal of Antennas and Propagation 2012 (2012): 1–14. http://dx.doi.org/10.1155/2012/292018.

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The latest standards for wireless networks such as LTE are essentially based on small cells in order to achieve a large network capacity. This applies for antennas to be deployed at street level or even within buildings. However, antennas are commonly designed, simulated, and measured in ideal conditions, which is not the real situation for most applications where antennas are often deployed in proximity to objects acting as disturbers. In this paper, three conventional wireless access point scenarios (antenna-wall, antenna-shelter, and antenna lamppost) are investigated for directional or omn

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Mansour, A. M., N. Shehata, B. M. Hamza, and M. R. M. Rizk. "Efficient Design of Flexible and Low Cost Paper-Based Inkjet-Printed Antenna." International Journal of Antennas and Propagation 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/845042.

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A new, efficient, flexible, and cheap antenna designed at 1.57 GHz microstrip patch antenna based on simple inkjet printer with improved performance using silver nanoparticles ink is developed. The antenna is printed on a kind of flexible substrate “glossy paper,” to offer the advantage of light and flexibility for different applications. The performance of silver nanoparticles ink has been studied through inkjet printing versus postsynthesis annealing and multilayer printing. The conductivity has been improved to have promising values up to 2 Ω/cm at temperatures up to 180°C. The surface morp

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T. G., Shivapanchakshari, and H. S. Aravinda. "PSO-CCO_MIMO-SA: A particle swarm optimization based channel capacity optimzation for MIMO system incorporated with smart antenna." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 6 (2020): 6276. http://dx.doi.org/10.11591/ijece.v10i6.pp6276-6282.

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With the radio channels physical limits, achieving higher data rate in the multi-channel systems is been a biggest concern. Hence, various spatial domain techniques have been introduced by incorporating array of antenna elements (i.e., smart antenna) in recent past for the channel limit expansion in mobile communication antennas. These smart antennas help to yield the improved array gain or bearm forming gain and hence by power efficiency enhanmaent in the channel and antenna range expansion. The use of smart antenna leads to spatial diversity and minimizes the fading effect and improves link

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Ghosh, Kalyanbrata, and Sushrut Das. "Circularly polarized ACPW Fed CRLH-TL based ZOR antenna with band notch characteristics." International Journal of Microwave and Wireless Technologies 12, no. 5 (2019): 387–97. http://dx.doi.org/10.1017/s1759078719001478.

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AbstractIn this paper, two asymmetric co-planar waveguide (ACPW) fed circularly polarized (CP) zeroth-order resonance (ZOR) antennas (Antenna I and II) are presented using a composite right and left-handed transmission line (CRLH-TL) approach. By adding a stub on the left side of the ACPW ground and adjusting its length, circularly polarization property has been achieved in Antenna I. The simulated 3 dB axial ratio bandwidth (ARBW) of Antenna I is 1750 MHz (3.50–5.25 GHz). Next, the left side ground plane of Antenna I is further defected by etching a quarter wavelength slit to introduce a notc

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Guo, Hong Fu, Chao Xu, Cai Xiang Xu, and Gui Hua Gao. "A New Measuring Method of the Relatively Permittivity Based on Antenna's Resonant Characteristics." Applied Mechanics and Materials 475-476 (December 2013): 95–98. http://dx.doi.org/10.4028/www.scientific.net/amm.475-476.95.

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This paper proposes a matter of permittivity measurement method which based on the microwave antennas resonant characteristics. The basic principle of measuring permittivity was analyzed by the antenna resonance theory. The simulation model has been build and analyzed by Ansoft HFSS simulation software. The relationship between different permittivity and the antennas resonant frequency was given. The experimental model was designed and the experimental data of sample was measured. The experimental and simulation data are compared and discussed. Results show that the simulation and experimental

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