UWB full polarization single-plane monopulse reflector antenna

IF 0.6 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Electromagnetics Pub Date : 2023-01-02 DOI:10.1080/02726343.2023.2177373

F. Ghiasvand

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引用次数: 0

Abstract

ABSTRACT UWB dual polarization azimuth plane monopulse feed-reflector antenna is presented. Quadridge ‎open ended waveguide working in frequency range from 6 to 12 GHz is proposed as feed for Cassegrain ‎reflector. The feed phase center distance is 0.65 and 1.3 at lowest and highest operating ‎frequency respectively. Sum (Σ) and Diff (Δ) radiation pattern of the feed array are measured in ‎anechoic chamber using same electrical length coaxial cable and 180°Coupler. The results are in good ‎agreement (vertical and horizontal polarizations) with numerical simulation especially for the main ‎beam. To enhance gain value, 50 cm reflector antenna has been used. A proper crossover is achieved ‎by controlling F/D ratio of the equivalent reflector. A compact Cassegrain reflector compatible to feed ‎array is designed and fabricated. The radiation characteristics measurements of the feed-reflector ‎system have been performed using outdoor measurement setup. By ignoring coupler insertion loss, ‎Sum (Diff) gain range is between 24.8 (17) dBi at 6 GHz and 31.7 (29.5) dBi at 12 GHz. Cross pol and null ‎depth better than −31.5 and −24 have been obtained. ‎

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超宽带全极化单平面单脉冲反射天线

提出了一种超宽带双极化方位面单脉冲馈-反射天线。提出了工作在6 ~ 12ghz频率范围内的Quadridge开放式波导作为卡塞格伦反射器的馈源。在最低工作频率和最高工作频率下，进给相位中心距分别为0.65和1.3。采用相同电长同轴电缆和180°耦合器在消声室中测量馈电阵列的Sum (Σ)和Diff (Δ)辐射方向图。计算结果与数值模拟吻合较好(垂直和水平极化)，特别是对主光束。为了提高增益值，采用了50cm反射面天线。通过控制等效反射器的F/D比，实现了适当的交叉。设计并制作了一种与馈源阵列兼容的紧凑型卡塞格伦反射器。采用室外测量装置对馈电-反射器系统的辐射特性进行了测量。忽略耦合器插入损耗，Sum (Diff)增益范围在6 GHz时为24.8 (17)dBi, 12 GHz时为31.7 (29.5)dBi。得到了优于- 31.5和- 24的交叉pol和null深度。‎

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来源期刊

Electromagnetics 工程技术-工程：电子与电气

CiteScore

1.60

自引率

12.50%

发文量

审稿时长

6 months

期刊介绍： Publishing eight times per year, Electromagnetics offers refereed papers that span the entire broad field of electromagnetics and serves as an exceptional reference source of permanent archival value. Included in this wide ranging scope of materials are developments in electromagnetic theory, high frequency techniques, antennas and randomes, arrays, numerical techniques, scattering and diffraction, materials, and printed circuits. The journal also serves as a forum for deliberations on innovations in the field. Additionally, special issues give more in-depth coverage to topics of immediate importance. All submitted manuscripts are subject to initial appraisal by the Editor, and, if found suitable for further consideration, to peer review by independent, anonymous expert referees. Submissions can be made via email or postal mail.