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A Four-arm Circularly Polarized High-gain High-tilt Beam Curl Antenna for Beam Steering Applications / Hengyi Zhou; Arpan Pal; Amit Mehta; Dariush Mirshekar; Hisamatsu Nakano

IEEE Antennas and Wireless Propagation Letters, Volume: 17, Issue: 6, Pages: 1034 - 1038

Swansea University Author: Mehta, Amit

Abstract

A novel circularly polarized beam steering four-arm curl antenna with four feed points is presented. The antenna provides steerable high-gain high-tilt right-handed circularly polarized (RHCP) beams for satellite communications. The antenna operates over a test frequency band of 1500 MHz to 1670 MHz...

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Published in: IEEE Antennas and Wireless Propagation Letters
ISSN: 1536-1225 1548-5757
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa39893
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spelling 2018-11-06T14:51:17Z v2 39893 2018-05-03 A Four-arm Circularly Polarized High-gain High-tilt Beam Curl Antenna for Beam Steering Applications Amit Mehta Amit Mehta true 0000-0001-8073-2436 false 8a1e5679707cf437cbfd17b72514b8a5 acc463a442825d2f4f3ea263c07e182f fXdyZa7qfyeWzRiHeaqoxYJSbZF11mHm1K8NtCGVMYw= 2018-05-03 EEN A novel circularly polarized beam steering four-arm curl antenna with four feed points is presented. The antenna provides steerable high-gain high-tilt right-handed circularly polarized (RHCP) beams for satellite communications. The antenna operates over a test frequency band of 1500 MHz to 1670 MHz and covers the entire L1 band. The four arms are arranged symmetrically with respect to the center of the antenna and each arm is fed by a coaxial line. When one of the four feed points is excited and the remaining feed points either open-circuited or terminated to 50° impedance, the antenna generates an RHCP tilted beam of 49° in the elevation plane. At a test frequency of 1575 MHz, the antenna provides a gain of 8.12 dBic. The antenna can switch the tilted beam in the four different space quadrants in the azimuth plane by exciting one feed point at a time. It is found that over the test band, the antenna provides a total efficiency of more than 89% and a gain of greater than 8 dBic. Journal article IEEE Antennas and Wireless Propagation Letters 17 6 1034 1038 1536-1225 1548-5757 27 4 2018 2018-04-27 10.1109/LAWP.2018.2830121 September_2018_100 words: This paper (in best antennas letters) is a result of a full year’s hard work by the PI team in Swansea and his Japanese collaborator to solve a challenging problem for Inmarsat BGAN (Broadband Global Area Network radio module). For the first time, it shows, a 50-degrees bended circularly polarized beam for high throughput satellite communications on narrow-band spectrum. This is significant as the other current alternative offer 5 dB lesser signal for Inmarsat BGAN satellite, which in effect means 5 times lesser internet speeds. This design is now selected as the main satellite antenna module for going forward for an ESA research project. College of Engineering Engineering CENG EEN None None 2018-11-06T14:51:17Z 2018-05-03T11:46:19Z College of Engineering Engineering Hengyi Zhou 1 Arpan Pal 2 Amit Mehta 3 Dariush Mirshekar 4 Hisamatsu Nakano 5 0039893-14052018094234.pdf zhou2018(4).pdf 2018-05-14T09:42:34Z Output 1031953 application/pdf AM true Updated Copyright 06/08/2018 2018-05-14T00:00:00 true eng
title A Four-arm Circularly Polarized High-gain High-tilt Beam Curl Antenna for Beam Steering Applications
spellingShingle A Four-arm Circularly Polarized High-gain High-tilt Beam Curl Antenna for Beam Steering Applications
Mehta, Amit
title_short A Four-arm Circularly Polarized High-gain High-tilt Beam Curl Antenna for Beam Steering Applications
title_full A Four-arm Circularly Polarized High-gain High-tilt Beam Curl Antenna for Beam Steering Applications
title_fullStr A Four-arm Circularly Polarized High-gain High-tilt Beam Curl Antenna for Beam Steering Applications
title_full_unstemmed A Four-arm Circularly Polarized High-gain High-tilt Beam Curl Antenna for Beam Steering Applications
title_sort A Four-arm Circularly Polarized High-gain High-tilt Beam Curl Antenna for Beam Steering Applications
author_id_str_mv 8a1e5679707cf437cbfd17b72514b8a5
author_id_fullname_str_mv 8a1e5679707cf437cbfd17b72514b8a5_***_Mehta, Amit
author Mehta, Amit
author2 Hengyi Zhou
Arpan Pal
Amit Mehta
Dariush Mirshekar
Hisamatsu Nakano
format Journal article
container_title IEEE Antennas and Wireless Propagation Letters
container_volume 17
container_issue 6
container_start_page 1034
publishDate 2018
institution Swansea University
issn 1536-1225
1548-5757
doi_str_mv 10.1109/LAWP.2018.2830121
college_str College of Engineering
hierarchytype
hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 1
active_str 1
description A novel circularly polarized beam steering four-arm curl antenna with four feed points is presented. The antenna provides steerable high-gain high-tilt right-handed circularly polarized (RHCP) beams for satellite communications. The antenna operates over a test frequency band of 1500 MHz to 1670 MHz and covers the entire L1 band. The four arms are arranged symmetrically with respect to the center of the antenna and each arm is fed by a coaxial line. When one of the four feed points is excited and the remaining feed points either open-circuited or terminated to 50° impedance, the antenna generates an RHCP tilted beam of 49° in the elevation plane. At a test frequency of 1575 MHz, the antenna provides a gain of 8.12 dBic. The antenna can switch the tilted beam in the four different space quadrants in the azimuth plane by exciting one feed point at a time. It is found that over the test band, the antenna provides a total efficiency of more than 89% and a gain of greater than 8 dBic.
published_date 2018-04-27T13:42:42Z
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score 10.808875