高性能溅散板馈源天线分析与设计

doi:10.3969/j.issn.1001-2400.2018.01.028

西安电子科技大学学报

高性能溅散板馈源天线分析与设计

刘明辉;相征;许彤通;任鹏;陈云

(西安电子科技大学通信工程学院，陕西西安 710071)

收稿日期:2017-05-31 出版日期:2018-02-20 发布日期:2018-03-23
作者简介:刘明辉(1987-)，男，西安电子科技大学博士研究生，E-mail: liumh9@qq.com
基金资助:
中国博士后科学基金资助项目(2017M610644)

Analysis and design of high performance splash-plate feed antenna

LIU Minghui;XIANG Zheng;XU Tongtong;REN Peng;CHEN Yun

(School of Telecommunications Engineering, Xidian Univ., Xi'an 710071, China)

Received:2017-05-31 Online:2018-02-20 Published:2018-03-23

摘要/Abstract

摘要：

为提升微波接力与点对点通信系统的传输距离及抗干扰能力，文中设计了一款口径为0.3m，中心频率为15GHz的高性能溅散板馈源天线．通过采取对溅散板馈源介质支撑镜和副反射面赋形的方法，实现馈源E面和H面的方向图在主反射面照射角范围内等化，在照射角范围外迅速滚降; 然后，通过优化介质匹配塞完成天线的阻抗匹配；最后，对所设计的天线模型进行样件加工并测试．测试结果表明，该天线中心频点的增益达到32.43dBi，最大旁瓣电平抑制在-21.89dB，E面和H面的前后比均达到59.57dB．仿真与实测结果吻合良好，设计方法行之有效．

关键词: 反射面, 溅散板馈源, 介质赋形, 低旁瓣

Abstract:

In order to improve the transmission distance and anti-interference ability of the microwave relay system and point-to-point communication system, we design a high performance splash-plate feed antenna with the diameter of 0.3m and the center frequency of 15GHz. By shaping the dielectric supporting mirror and sub-reflector of the splash-plate feed, we realize the far field radiation pattern equalization and roll-off of the E plane and H plane within and outside the scope of the main reflector irradiation angle, respectively. Then, the impedance matching of the antenna is realized by optimizing the media matching plug. Finally, the design model is processed and tested, with the test results showing that the gain at the antenna center frequency point is 32.43dBi, that the maximum sidelobe level can be suppressed to 21.89dB and that the front to back ratio in the E plane and H plane is significantly improved to be 59.57dB. The good agreement of measured data with simulation results verifies the proposed design.

Key words: reflector, splash-plate feed, shaped dielectric, low sidelobe

刘明辉;相征;许彤通;任鹏;陈云. 高性能溅散板馈源天线分析与设计[J]. 西安电子科技大学学报, 2018, 45(1): 156-161.

LIU Minghui;XIANG Zheng;XU Tongtong;REN Peng;CHEN Yun. Analysis and design of high performance splash-plate feed antenna[J]. Journal of Xidian University, 2018, 45(1): 156-161.

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高性能溅散板馈源天线分析与设计

Analysis and design of high performance splash-plate feed antenna

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