A Circularly Polarized Non-Resonant Slotted Waveguide Antenna Array for Wide-Angle Scanning

Author:

Han Guodong1,Liu Weihang1ORCID

Affiliation:

1. The 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050081, China

Abstract

A compact circularly polarized non-resonant slotted waveguide antenna array is proposed with the aim of achieving wide-angle scanning, circular polarization, and low side-lobe levels. The designed antenna demonstrates a scanning range of +11° to +13° in the frequency domain and a beam scanning range of −45° to +45° in the phase domain. This design exhibits significant advantages for low-cost two-dimensional electronic scanning circularly polarized arrays. It employs a compact element that reduces the aperture area by 50% compared to traditional circular polarization cavities. Additionally, the staggered array method is employed to achieve an element spacing of 0.57λ within the azimuth plane. Isolation gaps were introduced into the array to enhance the circular polarization performance of non-resonant arrays. The Taylor synthesis method was employed to reduce the side-lobe levels. A prototype was designed, fabricated, and measured. The results indicate superior radiation efficiency, favorable VSWR levels, and an axis ratio maintenance below 3 dB across the scanning range. The proposed antenna and methodology effectively broaden the beam scanning angle of circularly polarized slotted waveguide array antennas.

Publisher

MDPI AG

Reference36 articles.

1. Rain-induced deflection of microwave and millimetre-wave radiowaves;Troughton;Electron. Lett.,1976

2. Study of electromagnetic wave scattering and attenuation properties due to a melting layer of precipitation;Yang;J. Xidian Univ.,2002

3. A 256-element Ku-band polarization agile SATCOM receive phased array with wide-angle scanning and high polarization purity;Aljuhani;IEEE Trans. Microw. Theory Tech.,2021

4. A novel hybrid phased array antenna for satellite communication on-the-move in Ku-band;Han;IEEE Trans. Antennas Propag.,2015

5. Improved design of low sidelobe substrate integrated waveguide longitudinal slot array;Yang;IEEE Antennas Wirel. Propag. Lett.,2014

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3