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IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-11-27 DOI:10.1109/LAWP.2024.3506590

Jinbo Ruan;Junsheng Yu;Tianyang Chen;Yuan Yao

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引用次数: 0

摘要

在这封信中，我们集中讨论了宽带三反射器紧凑型天线测试范围（CATR）系统的计算电磁建模，并评估了随后的静区（QZ）场电磁特性。馈线喇叭的快速设计是通过将采用模式匹配法和 Stratton-Chu 公式的粗模型与基于全波仿真的高保真模型相结合来实现的。反射器是通过光线跟踪和 B 样条曲面构造合成的。设计的馈电喇叭与两个异形副反射器共同构成双反射器馈电系统，完成对主反射器的照明。三反射器 CATR 的 QZ 场是通过 GRASP10 中的物理光学和衍射物理理论计算得出的。利用洛伦兹互易定理和平面波频谱，对三反射器 CATR 和被测天线组合的远场模式测量预测进行了数值计算。三反射器 CATR 的有用带宽为 480 GHz 至 600 GHz，QZ 直径约为 1 m 至 2 m。共极振幅和相位纹波符合质量标准，跨极化隔离度超过 50 dB。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Design and Evaluation of Wideband Three-Reflector Compact Antenna Test Range System Based on Integrated Computational Electromagnetic Model

In this letter, we concentrate on computational electromagnetic modeling for a wideband three-reflector compact antenna test range (CATR) system and evaluate the subsequent quiet zone (QZ) field electromagnetic characteristics. The fast design of the feedhorn is accomplished by integrating a coarse model, employing the mode matching method and Stratton–Chu formula, with a high-fidelity model based on full-wave simulations. The reflectors are synthesized by integrating ray tracing and B-spline surface construction. The designed feed horn, in conjunction with two shaped sub-reflectors, forms a dual reflector feed system to complete the illumination of the main reflector. The QZ field for the three-reflector CATR is calculated using physical optics and the physical theory of diffraction in GRASP10. Utilizing Lorentz reciprocity theorem and plane wave spectrum, numerical calculations of far-field pattern measurement predictions are provided for three-reflector CATR and antenna-under-test combinations. The useful bandwidth of the three-reflector CATR is 480 GHz to 600 GHz, with a QZ diameter of approximately 1 m to 2 m. The copolar amplitude and phase ripple meet the quality criteria, and cross-polarization isolation exceeds 50 dB.

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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.