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Journal articles on the topic 'Broadband Tracking Antenna Feed'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Dastkhosh, Amir Reza, Hamidreza Dalili Oskouei, and Gholamreza Khademevatan. "Compact Low Weight High Gain Broadband Antenna by Polarization-Rotation Technique for X-Band Radar." International Journal of Antennas and Propagation 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/743046.

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Less efficiency and gain is achieved by existence of aperture blocking phenomena in cassegrain antenna caused by the presence of subreflector or antenna feed. Also, length of feed cables causes delay which is another undesirable problem in antennas, since errors and less precision of detecting targets are created. To overcome these problems, low weight and compact optimized polarization-rotation monopulse cassegrain antenna is designed in this paper. The goal of our proposed rotating antenna is achievement of sum and difference patterns for target tracking in monopulse radar. In our work, left part of hyperbolic subreflector instead of right one has been used for reducing size of the antenna. The antenna is fabricated by grid wires instead of solid sheet metal reflectors and with composite technology for decreasing its weight. Width and volume of the antenna reduce by about 50% in comparison to other reflector antennas. This antenna has been simulated and manufactured in X-band and simulation data are in good agreement with measured ones. The antenna has the average gain of 35 dB from 8.5 up to 9.5 GHz. Also the antenna feed bandwidth is more than 50% and the antenna has efficiency of about 50% from 8 up to 10 GHz.

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2

Chien, Wei, Tzong-Tyng Hsieh, Chien-Ching Chiu, Yu-Ting Cheng, Yang-Han Lee, and Qiang Chen. "Theoretical Derivation and Optimization Verification of BER for Indoor SWIPT Environments." Symmetry 12, no. 7 (July 17, 2020): 1185. http://dx.doi.org/10.3390/sym12071185.

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Symmetrical antenna array is useful for omni bearing beamforming adjustment with multiple receivers. Beam-forming techniques using evolution algorithms have been studied for multi-user resource allocation in simultaneous wireless information and power transfer (SWIPT) systems. In a high-capacity broadband communication system there are many users with wearable devices. A transmitter provides simultaneous wireless information and power to a particular receiver, and the other receivers harvest energy from the radio frequency while being idle. In addition, the ray bounce tracking method is used to estimate the multi-path channel, and the Fourier method is used to perform the time domain conversion. A simple method for reducing the frequency selective effort of the multiple channels using the feed line length instead of the digital phase shifts is proposed. The feed line length and excitation current of the transmitting antennas are adjusted to maximize the energy harvest efficiency under the bit error rate (BER) constraint. We use the time-domain multipath signal to calculate the BER, which includes the inter symbol interference for the wideband system. In addition, we use multi-objective function for optimization. To the best of our knowledge, resource allocation algorithms for this problem have not been reported in the literature. The optimal radiation patterns are synthesized by the asynchronous particle swarm optimization (APSO) and self-adaptive dynamic differential evolution (SADDE) algorithms. Both APSO and SADDE can form good patterns for the receiver for energy harvesting. However, APSO has a faster convergence speed than SADDE.

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3

Golovkov, Alexander A., Polina V. Terenteva, Alexander G. Zhuravlev, Michail S. Shmyrin, and Nikolay S. Stenyukov. "BROADBAND MICROWAVE VIVALDI ANTENNA USING COPLANAR FEED LINE." Journal of the Russian Universities. Radioelectronics, no. 6 (January 18, 2019): 13–19. http://dx.doi.org/10.32603/1993-8985-2018-21-6-13-19.

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Nowadays Vivaldi antennas are used as directional emitters with matching and balancing device at the input. As a rule, these devices cause additional losses in case of broadband operation. Besides, the use of the device leads to radiator pattern distortions, especially when operating in a wide frequency range. Stringent operating requirements (wide operating temperature, high humidity, salt fog, vibration, etc.), make the choice of proper chip very complicated. The aim of the study is to develop a slot antenna with a 50-ohm port at the input, which would be easy to manufacture and operate, while maintaining high gain in a wide frequency range. As is known, the field structure in the coplanar line is close to the field structure in the slit field close to it. As is known, the field structure in the coplanar line is similar to the field structure in the slot line. Using mathematics for such fields, means of electrodynamic modeling and numerical calculation, a system is developed that consists of two Vivaldi antennas fed by one coplanar line. Thus, the emitter has a close to a circular pattern and low losses in the structure of feeding, matching and balancing, the functions of which are performed by the coplanar line. The results are given for the frequency range of 1-6 GHz. The device as a whole is a dielectric substrate with radiating structure made as double-sided metallization. Finline-based emitters are acceptable to use for operation in higher frequencies. Antenna has low manufacturing cost and it is easy to repeat. Currently the authors are continuing work on the study of the use of such elements as part of antenna arrays.

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4

I-Fong Chen, Chia-Mei Peng, Su-Mei Shen, Ding-Bing Lin, and Keh-Yi Lee. "Bowtie-Feed Broadband Monopole Antenna for Laptop Applications." IEEE Antennas and Wireless Propagation Letters 10 (2011): 1302–4. http://dx.doi.org/10.1109/lawp.2011.2176906.

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5

Patel, P. D. "Inexpensive multi-mode satellite tracking feed antenna." IEE Proceedings H Microwaves, Antennas and Propagation 135, no. 6 (1988): 381. http://dx.doi.org/10.1049/ip-h-2.1988.0080.

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6

Hori, Toshikazu, and Nobuo Nakajima. "Broadband circularly polarized microstrip array antenna with coplanar feed." Electronics and Communications in Japan (Part I: Communications) 69, no. 11 (1986): 76–83. http://dx.doi.org/10.1002/ecja.4410691108.

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7

Yuan-Ming Cai, Ke Li, Ying-Zeng Yin, and Wei Hu. "Broadband Circularly Polarized Printed Antenna With Branched Microstrip Feed." IEEE Antennas and Wireless Propagation Letters 13 (2014): 674–77. http://dx.doi.org/10.1109/lawp.2014.2314317.

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8

Armaki, S. H. Mohseni, F. Hojat Kashani, J. R. Mohassel, and M. Naser-Moghadasi. "Design and realization of tracking feed antenna system." IEICE Electronics Express 8, no. 12 (2011): 908–15. http://dx.doi.org/10.1587/elex.8.908.

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9

M. Jyothsna, K., and S. Suganthi. "Design of a Square-Shaped Broadband Antenna with Ground Slots for Bandwidth Improvement." International Journal of Engineering & Technology 7, no. 3.6 (July 4, 2018): 45. http://dx.doi.org/10.14419/ijet.v7i3.6.14935.

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This paper portrays the design of a compact square-shaped microstrip broadband antenna using ground slots. Polygon shaped slots are placed on the ground under the feed line for bandwidth improvement. Similarly, rectangular slots are placed on the square patch for gain enhancement. Effect of these slots on the performance of the antenna in terms of impedance bandwidth, gain and directivity are studied. Results of simulation tests show that a ground slot with proper dimensions placed under the feed line can improve the impedance matching and hence increase the bandwidth without affecting much the performance of the antenna. This compact antenna of size 9.098 x 9.098 mm can be very useful for applications where size is a major constraint. Simple microstrip feed is used to feed the patch. The percentage bandwidth of this antenna is 75.57 %.

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10

Upnere, S., N. Jekabsons, and U. Locans. "Smooth Tracking Trajectory Generation of Large Antenna." Latvian Journal of Physics and Technical Sciences 53, no. 1 (February 1, 2016): 24–33. http://dx.doi.org/10.1515/lpts-2016-0003.

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Abstract The current paper presents an engineering approach for studies of the control algorithm designed for a mechanically robust large antenna. Feed-forward control methods with the 3rd-order polynomial tracking algorithm are supplemented to the original feed-back PID control system. Dynamical model of the existing servo system of 32m radio telescope has been developed to widen a case analysis of observation sessions and efficiency of the control algorithms due to limited access to an antenna. Algorithms along with the results from the system implemented on a real antenna as well as model results are presented.

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11

Ding, Kang, Rentang Hong, Dongfang Guan, Li Liu, and Yanjie Wu. "Broadband circularly polarised stacked antenna with sequential‐phase feed technique." IET Microwaves, Antennas & Propagation 14, no. 8 (April 27, 2020): 779–84. http://dx.doi.org/10.1049/iet-map.2019.0894.

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12

Han, Rong‐Cang, and Shun‐Shi Zhong. "Broadband circularly‐polarised chifre‐shaped monopole antenna with asymmetric feed." Electronics Letters 52, no. 4 (February 2016): 256–58. http://dx.doi.org/10.1049/el.2015.3319.

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13

Lee, Byungje, Gi-Cho Kang, and Sung-Hyun Yang. "Broadband high-efficiency microstrip antenna array with corporate-series-feed." Microwave and Optical Technology Letters 43, no. 3 (2004): 181–83. http://dx.doi.org/10.1002/mop.20413.

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14

Chang, Fa-Shian, and Kin-Lu Wong. "Broadband patch antenna edge-fed by a coplanar probe feed." Microwave and Optical Technology Letters 31, no. 4 (2001): 287–89. http://dx.doi.org/10.1002/mop.10013.

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15

Yang, Shiwen, Soon Hie Tan, Yeow Beng Gan, and Chun Wee See. "Broadband conical printed quadrifilar helical antenna with integrated feed network." Microwave and Optical Technology Letters 35, no. 6 (November 21, 2002): 491–93. http://dx.doi.org/10.1002/mop.10646.

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16

Tsai, Jia-Fu, and Jeen-Sheen Row. "Balun-feed reconfigurable antenna applied for broadband switched beam arrays." Microwave and Optical Technology Letters 58, no. 4 (February 24, 2016): 748–51. http://dx.doi.org/10.1002/mop.29667.

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17

Pan, Mon-Chun, and Kin-Lu Wong. "Broadband circularly polarized microstrip antenna with a dual-perpendicular feed." Microwave and Optical Technology Letters 24, no. 6 (March 20, 2000): 420–22. http://dx.doi.org/10.1002/(sici)1098-2760(20000320)24:6<420::aid-mop18>3.0.co;2-h.

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18

Zhang, L. N., S. S. Zhong, and S. Q. Xu. "Broadband U-shaped dielectric resonator antenna with elliptical patch feed." Electronics Letters 44, no. 16 (2008): 947. http://dx.doi.org/10.1049/el:20081253.

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19

Tang, X. H., Y. L. Long, H. Wong, and K. L. Lau. "Broadband circularly-polarised patch antenna with 3D meandering strip feed." Electronics Letters 47, no. 19 (2011): 1060. http://dx.doi.org/10.1049/el.2010.3358.

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20

Rathor, Vivek Singh, and J. P. Saini. "Compact CP Feed Broadband Microstrip Patch Antenna for Wireless Applications." IOSR Journal of Electronics and Communication Engineering 9, no. 1 (2014): 54–58. http://dx.doi.org/10.9790/2834-09125458.

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21

Zhang, Changhong, Junping Geng, Bin Zhou, Xianling Liang, and Ronghong Jin. "A Broadband Single-Feed Circularly Polarized Patch Antenna with Wide Beamwidth." International Journal of Antennas and Propagation 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/740274.

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A broadband single-feed circularly polarized patch antenna with wide beamwidth is presented. The patch is coupled to four asymmetric cross slots via a microstrip ring with eight matching segments underneath the ground plane, traversing through the arms of the cross slots in a serial manner. And a coupling slice instead of a resistive load is used as matching load of the microstrip ring for higher gain. Furthermore, a metal side wall surrounding the antenna is used to improve the isolation between adjacent elements in an array. Through optimizing the four asymmetric cross slots and eight matching segments, excellent performances are achieved by the proposed antenna, especially for the broadband and wide beamwidth. Measurement results show that the antenna has −10 dB reflection coefficient bandwidth of 29.7%, 3-dB axial-ratio bandwidth of 21.6%, and beamwidth of more than 90°. It can be considered as a good candidate for the element of arrays.

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22

Kumar, Hemant, and Girish Kumar. "Broadband monopulse microstrip antenna array for X‐band monopulse tracking." IET Microwaves, Antennas & Propagation 12, no. 13 (August 8, 2018): 2109–14. http://dx.doi.org/10.1049/iet-map.2018.5332.

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23

Zhou, Jian-Mei, Hao Hu, Chaoyi Li, Yi Ren, and Wei Luo. "A Broadband Differential Antenna Based on Common-Gate/Common-Source Active Balun Feed." Frequenz 73, no. 7-8 (July 26, 2019): 253–59. http://dx.doi.org/10.1515/freq-2018-0143.

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Abstract In this paper, a novel broadband differential antenna is designed. An active balun is utilized to realize the wideband differential feed to achieve low cross- polarization antenna radiation within the working frequency of 1.0–1.6 GHz. The active balun uses a common-gate/common-source structure to achieve two equal-amplitude signals with 180° phase difference. The differential antenna is composed of rectangular slot floor and symmetrical radiation patch. The antenna is fed by the out-of-phase output of the active balun. The tested results in 1.0–1.6 GHz show the cross-polarization of E and H plane of the proposed differential antenna are lower than −22 dB, with maximum radiation direction gain is 2.3 dBi. The measured reflection coefficient of the proposed differential antenna based on the active balun feed is in good agreement with the simulation data.

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24

Kong, Deok Kyu, Jaesik Kim, Daewoong Woo, and Young Joong Yoon. "Broadband Modified Proximity Coupled Patch Antenna with Cavity-Backed Configuration." Journal of Electromagnetic Engineering and Science 21, no. 1 (January 31, 2021): 8–14. http://dx.doi.org/10.26866/jees.2021.21.1.8.

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A modified proximity-coupled microstrip patch antenna with broad impedance bandwidth is proposed by incorporating proximity-coupled patch antenna into the rectangular open-ended microstrip feed line on a cavity structure. First we design a proximity-coupled microstrip antenna to have a wide bandwidth in the lower band centered at 7 GHz using a cavity-backed ground. To broaden the bandwidth of the antenna to the upper band, we then apply a rectangular open-ended microstrip feed line, adjusting the relative position to the cavity to generate an additional resonance close to 10 GHz. The combination of lower and upper band design results in a broadband antenna with dimensions of 30 mm × 30 mm × 9 mm (0.9λ<sub>0</sub> × 0.9λ<sub>0</sub> × 0.27λ<sub>0</sub>) is designed where λ<sub>0</sub> corresponds to the free space wavelength at a center frequency of 9 GHz. The measurement results verify the broad impedance bandwidth (VSWR ≤ 2) of the antenna at 77% (5.6–12.6 GHz) while the broadside gain is maintained between 6 dBi and 8 dBi within the operational broad bandwidth.

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25

Al-Sehemi, Abdullah, Ahmed Al-Ghamdi, Nikolay Dishovsky, Gabriela Atanasova, and Nikolay Atanasov. "A flexible broadband antenna for IoT applications." International Journal of Microwave and Wireless Technologies 12, no. 6 (March 11, 2020): 531–40. http://dx.doi.org/10.1017/s1759078720000161.

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AbstractA flexible broadband antenna with high radiation efficiency for the Internet of Things (IoT) applications is presented. The design is based on a U-shaped and a triangular-shaped radiator with two tuning stubs. A 50 Ω coplanar waveguide (CPW) transmission line is employed to feed the antenna. The proposed antenna is fabricated on a flexible substrate from a composite synthesized by mixing natural rubber with SiO2 as a filler. The radiating elements, along with the CPW, are built using a highly conductive woven fabric. Results show that the antenna has a simulated and measured impedance bandwidth of 0.856–2.513 GHz and covers the most commonly used wireless communication standards and technologies for IoT applications. The radiation efficiency of the antenna reaches over 75% throughout the operating frequency band with satisfactory radiation patterns and gain. The flexible antenna was also tested under bending conditions. The presented results demonstrate that bending has a minor effect on the antenna performance within the target frequency range. The measured results show a good agreement with simulations.

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26

Zhu, Naida, Xue-Xia Yang, Tian Lou, Qidong Cao, and Steven Gao. "Broadband Polarization-Reconfigurable Slot Antenna and Array With Compact Feed Network." IEEE Antennas and Wireless Propagation Letters 18, no. 6 (June 2019): 1293–97. http://dx.doi.org/10.1109/lawp.2019.2915650.

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27

Gan, Theng Huat, and Eng Leong Tan. "DESIGN OF BROADBAND CIRCULAR POLARIZATION TRUNCATED HORN ANTENNA WITH SINGLE FEED." Progress In Electromagnetics Research C 24 (2011): 197–206. http://dx.doi.org/10.2528/pierc11082505.

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28

Cai, Yuan-Ming, Shu-Feng Zheng, Ying-Zeng Yin, Jiao-Jiao Xie, and Ke Li. "SINGLE-FEED CIRCULARLY POLARIZED ANNULAR SLOT ANTENNA FOR DUAL-BROADBAND OPERATION." Progress In Electromagnetics Research C 39 (2013): 91–101. http://dx.doi.org/10.2528/pierc13022704.

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29

Bancroft, Randy. "A broadband microstrip antenna utilizing an integrated rectangular-channel-shaped feed." Microwave and Optical Technology Letters 38, no. 6 (July 31, 2003): 491–94. http://dx.doi.org/10.1002/mop.11099.

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30

Ge, Yuehe, Karu P. Esselle, and Trevor S. Bird. "A broadband E-shaped patch antenna with a microstrip-compatible feed." Microwave and Optical Technology Letters 42, no. 2 (2004): 111–12. http://dx.doi.org/10.1002/mop.20223.

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31

Zheng, Guiping, Ahmed A. Kishk, Allen W. Glisson, and Alexander B. Yakovlev. "A broadband printed bow-tie antenna with a simplified balanced feed." Microwave and Optical Technology Letters 47, no. 6 (2005): 534–36. http://dx.doi.org/10.1002/mop.21221.

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32

Lin, Yin-Fang, and Kin-Lu Wong. "Compact broadband triangular microstrip antenna with an inset microstrip-line feed." Microwave and Optical Technology Letters 17, no. 3 (February 20, 1998): 169–70. http://dx.doi.org/10.1002/(sici)1098-2760(19980220)17:3<169::aid-mop5>3.0.co;2-h.

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33

Kim, Byoung-Nam, Seong-Ook Park, and Jung-Keun Oh. "Broadband built-in antenna with new enclosed 3D coupling feed structure." Microwave and Optical Technology Letters 52, no. 10 (July 14, 2010): 2306–9. http://dx.doi.org/10.1002/mop.25441.

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34

Valale Prasannakumar, Prathap, Mohamed A. Elmansouri, and Dejan S. Filipovic. "Broadband Reflector Antenna With High Isolation Feed for Full-Duplex Applications." IEEE Transactions on Antennas and Propagation 66, no. 5 (May 2018): 2281–90. http://dx.doi.org/10.1109/tap.2018.2814224.

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35

Bakhtiari, Asghar, Ramezan Ali Sadeghzadeh, and Mohammad Naser-Moghaddasi. "Millimeter-wave beam-steering high gain array antenna by utilizing metamaterial zeroth-order resonance elements and Fabry-Perot technique." International Journal of Microwave and Wireless Technologies 10, no. 3 (April 2018): 376–82. http://dx.doi.org/10.1017/s1759078717001301.

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Millimeter-wave (mm-wave) beam-steering antennas are preferred for reducing the disruptive effects, such as those caused by high atmospheric debilitation in wireless communications systems. In this work, a compact broadband antenna array with a low loss feed network design is introduced. To overcome the short-range effects on mm-wave frequencies, a feed network – with a modified Butler matrix and a compact zeroth-order resonance antenna element – has been designed. Furthermore, the aperture feed technique has been utilized to provide a broadside stable pattern and improve the delivered gain. A Fabry-Perot layer without the height of the air layer is used. Taking advantage of this novel design, a broadband and compact beam-steering array antenna – capable of covering impedance bandwidths (from 33.84 to 36.59 GHz) and scanning a solid angle of about ~94°, with a peak gain of 17.6 dBi – is attained.

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36

Saluja, Nitin, and Rajesh Khanna. "Design analysis and fabrication of novel coplanar waveguide -fed hybrid fractal-based Broadband antenna." International Journal of Microwave and Wireless Technologies 5, no. 6 (August 7, 2013): 749–52. http://dx.doi.org/10.1017/s1759078713000706.

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In this paper, a new compact hybrid fractal antenna with ultrawideband (UWB) behavior is proposed. Two merged fractals shapes, i.e. Sierpinski carpet and Sierpinski Gasket fed with coplanar waveguide (CPW) feed make patch as multiband and broadband antenna. The antenna is optimized using particle swarm optimization for side length of Sierpenski Gasket fractal and bandwidth. The overall width of the patch is taken as a parameter for optimizing bandwidth. The total size of presented antenna is 59 × 29 mm2. The antenna resonates at 2–5.2 GHz, so that wideband operation is observed. Antenna with this type of characteristics can be used when UWB response at lower frequencies is required. Sierpenski Gasket performs two functions in the proposed design, i.e. to radiate as well as impedance transformer to Sierpenski carpet. The proposed design presents novelty in design to achieve proper impedance matching to edge of Sierpenski carpet design with CPW feed by making Sierpenski Gasket as impedance transformer.

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37

NAGATOSHI, Mio, Shingo TANAKA, Satoru HORIUCHI, and Hisashi MORISHITA. "Broadband Characteristics of a Planar Folded Dipole Antenna with a Feed Line." IEICE Transactions on Communications E94-B, no. 5 (2011): 1168–73. http://dx.doi.org/10.1587/transcom.e94.b.1168.

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38

张, 平川. "Design Feed Network for Multi-Mode Broadband Microstrip Antenna of Navigation Terminal." Journal of Antennas 07, no. 02 (2018): 9–16. http://dx.doi.org/10.12677/ja.2018.72002.

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39

Ding, Kang, Tong-Bin Yu, De-Xin Qu, Wen-Quan Cao, and Wei Zhang. "Broadband circularly polarized patch antenna with gap-coupled feed and resistor loading." International Journal of RF and Microwave Computer-Aided Engineering 24, no. 5 (March 20, 2014): 587–93. http://dx.doi.org/10.1002/mmce.20802.

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40

Han, Rong-Cang, Shun-Shi Zhong, and Jing Liu. "Design of broadband circularly polarized dielectric resonator antenna using improved feed network." Microwave and Optical Technology Letters 56, no. 9 (June 24, 2014): 2191–95. http://dx.doi.org/10.1002/mop.28550.

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41

Mohammadirad, M., N. Komjani, M. R. Chaharmir, J. Shaker, and A. R. Sebak. "Impact of Feed Position on the Operating Band of Broadband Reflectarray Antenna." IEEE Antennas and Wireless Propagation Letters 11 (2012): 1104–7. http://dx.doi.org/10.1109/lawp.2012.2218563.

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42

He, Mang, Xihong Ye, Pingyuan Zhou, Guoqiang Zhao, Chuanfang Zhang, and Houjun Sun. "A Small-Size Dual-Feed Broadband Circularly Polarized U-Slot Patch Antenna." IEEE Antennas and Wireless Propagation Letters 14 (2015): 898–901. http://dx.doi.org/10.1109/lawp.2014.2384496.

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43

Jung, J. H., H. Choo, and I. Park. "Small broadband disc-loaded monopole antenna with probe feed and folded stripline." Electronics Letters 41, no. 14 (2005): 788. http://dx.doi.org/10.1049/el:20050612.

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44

Jassim, Ali Khalid, and Raad H. Thaher. "Enhancement gain of broadband elliptical microstrip patch array antenna with mutual coupling for wireless communication." Indonesian Journal of Electrical Engineering and Computer Science 13, no. 1 (January 1, 2019): 217. http://dx.doi.org/10.11591/ijeecs.v13.i1.pp217-225.

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<p>The paper is presented analysis, design and manufacturing single optimize parameters of a new broadband elliptical patch antenna with microstrip center feed line and the array has been implemented to improve gain antenna. The antenna array dimension of mm<sup>3</sup> and fabricated on an FR-4 epoxy substrate having relative dielectric constant =4.3, loss tangent tan (δ) =0.002 and the feed line used has characteristic impedance of 50Ω and added the triangle notch structure .Thus notch can achieve maximal additional enhancement impedance bandwidth are (3.679- 6.578) GHz, (13.84-25.142) GHz, (29.807-37.618) GHz and the gain 8dBi. The antenna array performance was modified by inserting stubs transition in feeding Microstrip line to reducing mutual coupling achieve impedance bandwidth (when S<sub>11</sub>-10dB). The modified antenna was designed to be used for wireless communication application. The simulation results are obtained using CST software.</p>

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45

Pereira, Francisco Estêvão Simão, and Maurício Henrique Costa Dias. "On the Design of Conical Antennas for Broadband Impedance Matching Performance." International Journal of Antennas and Propagation 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/1691580.

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In the scope of broadband radiators, the biconical antenna, or its monopole conical counterpart, is long known to be a proper choice. One common form of such radiator, the spherically capped conical antenna (SCCA), has closed-form solution to its input impedance, from which the broadband performance potential is easily verified. Nonetheless, from the design perspective, apart from a few clues inferred from existing solutions, little is found to accurately guide the choice of the main geometrical parameters of the antenna that will enable it to comply with a set of imposed bandwidth requirements. This paper proposes a simple 10-step sequence to derive conical or biconical antenna design charts. These charts provide straightforward information on the geometrical limits within which the required antenna impedance matching broadband performance is achieved. The method is assessed for the SCCA and the open conical antenna (OCA) using theoretical and simulated estimates of the input impedance. A discussion on the impact of the cap and the feed gap is included.

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46

Huang, Yuxuan, Zeqi Zhu, Shuting Cai, Xiaoming Xiong, and Yuan Liu. "Broadband Dual-Polarized Multidipole Antenna for Base Station Applications." International Journal of Antennas and Propagation 2021 (September 9, 2021): 1–8. http://dx.doi.org/10.1155/2021/4206702.

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A wideband dual-polarized multidipole antenna for base station applications is proposed. It consists of a pair of large square-shaped loop dipoles and a pair of small rectangle loop dipoles as radiation elements. A pair of small rectangle loop dipoles is fed by T-shaped feed structure which is in the large square-shaped loop dipoles radiating arm so that the antenna generates an additional resonance and obtains a wider bandwidth. The proposed antenna was fabricated and measured, and the results show that the antenna achieves a wide impedance bandwidth of 63.7 % with VSWR<1.5 covering the frequency range from 1.55 to 3 GHz. A high isolation is better than 29 dB within the operating frequency bandwidth. Moreover, an average gain 8 dBi and a stable radiation pattern with 3 dB beamwidth of 69° ± 4° at H-plane are obtained.

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Samsuzzaman, Md, and Mohammad Islam. "Circularly Polarized Broadband Printed Antenna for Wireless Applications." Sensors 18, no. 12 (December 4, 2018): 4261. http://dx.doi.org/10.3390/s18124261.

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A simple, compact sickle-shaped printed antenna with a slotted ground plane is designed and developed for broadband circularly polarized (CP) radiation. The sickle-shaped radiator with a tapered feed line and circular slotted square ground plane are utilized to realize the wideband CP radiation feature. With optimized dimensions of 0.29λ × 0.29λ × 0.012λ at 2.22 GHz frequency for the realized antenna parameters, the measured results display that the antenna has a 10 dB impedance bandwidth of 7.70 GHz (126.85%; 2.22–9.92 GHz) and a 3 dB axial ratio (AR) bandwidth of 2.64 GHz (73.33%; 2.28–4.92 GHz). The measurement agrees well with simulation, which proves an excellent circularly polarized property. For verification, the mechanism of band improvement and circular polarization are presented, and the parametric study is carried out. Since, the proposed antenna is a simple design structure with broad impedance and AR bandwidth, which is a desirable feature as a candidate for various wireless communication systems. Because of the easy printed structure and scaling the dimension with broadband CP characteristics, the realized antenna does incorporate in a number of CP wireless communication applications.

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Shen, Rong, Xiuzhu Ye, and Jungang Miao. "Design of a Multimode Feed Horn Applied in a Tracking Antenna." IEEE Transactions on Antennas and Propagation 65, no. 6 (June 2017): 2779–88. http://dx.doi.org/10.1109/tap.2017.2686016.

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Reddy, V. V., and N. V. S. N. Sarma. "Reactive impedance surface-based broadband circularly polarized Koch fractal boundary microstrip antenna." International Journal of Microwave and Wireless Technologies 8, no. 2 (December 22, 2014): 243–50. http://dx.doi.org/10.1017/s1759078714001421.

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A circularly polarized (CP) broadband antenna is proposed for wireless applications in the range of 2–3 GHz frequency. It consists of asymmetrical Koch fractal boundary patch over a reactive impedance surface (RIS) substrate. The simulations of single-layer Koch fractal antenna, dual layer with square and fractal RIS elements are carried out in a systematic way for broadband CP radiation and corresponding results are presented. For better CP characteristics, properties of fractal curves and dimensions of RIS elements are optimized. The antenna with fractal RIS iteration order one (iteration1) is experimentally studied. The 10-dB return loss bandwidth is 50.35%, whereas 3-dB axial ratio bandwidth is 7.45%, which indicate that by applying fractals concept to RIS technique, with a single probe feed, broadband CP radiation can be obtained.

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Ahmad, Inzamam, Shakir Ullah, Jalal ud din, Sadiq Ullah, Waseem Ullah, Usman Habib, Salahuddin Khan, and Jaume Anguera. "Maple-Leaf Shaped Broadband Optical Nano-Antenna with Hybrid Plasmonic Feed for Nano-Photonic Applications." Applied Sciences 11, no. 19 (September 24, 2021): 8893. http://dx.doi.org/10.3390/app11198893.

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This article presents a broadband optical nano-antenna, which covers a broader range of optical communication wavelengths (666 to 6000 nm), used in nano-photonic applications. The proposed design is modeled and analyzed to obtain a satisfactory gain of up to 11.4 dBi for a single element-based antenna. The unique feature of the proposed antenna is the hybrid plasmonic waveguide-based feed, which receives the optical signal from the planar waveguide and redirects the signal out of the plane. The proposed antenna provides highly directional radiation properties, which makes it a suitable candidate for inter- and intra-chip optical communications and sensing applications. Moreover, an extension of the work is performed for an array configuration of the order 2 × 1 and 64 × 1, to increase the gain and directionality. Therefore, this shows that it can be equally useful for optical energy harvesting applications with a significant gain up to 26.8 dBi.

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