| 一种3GHz～4GHz平衡馈电紧缩场双极化馈源设计 |
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| 作者姓名： | 李栋 全绍辉 |
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| 作者单位： | 北京航空航天大学电子信息工程学院电磁工程实验室,北京100083 |
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| 基金项目： | 国家自然科学基金资助项目（60771011） |
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| 摘 要： | 文章设计了一种工作在3GHz～4GHz的双极化紧缩场馈源。馈源的辐射部分使用四槽波纹喇叭，馈电部分采用平衡馈电技术实现馈源的双极化。同时，为了改善馈源的匹配和交叉极化特性，采用了一种新的馈电探针结构。结合180。混合网络的测试结果表明，与传统的双极化馈源相比，采用平衡馈电技术的馈源具有等化性良好的方向图、静区照射角内具有较低的幅度与相位锥削、低交叉极化、低旁瓣和后瓣等优良的电气性能，在测试环境要求较高的情况下，可用作高性能紧缩场的馈源。
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| 关 键 词： | 平衡馈电 紧缩场 双极化 波纹喇叭 |
Design of a Balanced Feeding Dual-Polarized Feed Operating in 3GHz-4GHz for CATR |
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| Authors: | Li Dong Quan Shaohui |
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| Institution: | (College of Electronic Information Engineering, Beijing University of Aeronautics ＆ Astronautics, Beijing 100083, China) |
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| Abstract: | This paper presents the design of dual-polarized feed used in Compact Antenna Test Range （ CA- TR）. Four-slot corrugated horn is selected as the radiation part, while the feeding part uses balanced feeding tech- nology to realize dual-polarization of the feed. In addition, a new probe structure is proposed to improve the impedance matching and cross-polarization characteristics. Measurements of the feed with 180 degree hybrid are also conducted. Promising performances are obtained, including consistent radiation patterns, low amplitude and phase taper in the quiet zone, low cross-polarization level, low side and back lobe. It could be used as high performance feed in the test circumstance of high demand. |
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| Keywords: | Balanced feed CATR Dual-polarization Corrugated horn |
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