倾斜波束非对称SAARS微带天线设计

doi:10.3969/j.issn.1001-2400.2014.01.029

J4 ›› 2014, Vol. 41 ›› Issue (1): 164-169.doi: 10.3969/j.issn.1001-2400.2014.01.029

倾斜波束非对称SAARS微带天线设计

李思佳;曹祥玉;高军;郑秋容;杨欢欢

(空军工程大学信息与导航学院，陕西西安 710077)

收稿日期:2012-09-29 修回日期:2012-11-30 出版日期:2014-02-20 发布日期:2014-04-02
通讯作者: 李思佳
作者简介:李思佳(1987-)，男，空军工程大学博士研究生，E-mail: lsj051@126.com．
基金资助:
国家自然科学基金资助项目(61271100)；陕西省自然科学基础研究重点资助项目(2010JZ010)；陕西省自然科学基础研究计划资助项目(2012JM8003)；空军工程大学博士研究生创新基金资助项目(20110301)

SAARS microstrip antenna design with an asymmetrical structure and a tilted beam

LI Sijia;CAO Xiangyu;GAO Jun;ZHENG Qiurong;YANG Huanhuan

(School of Information and Navigation, Air Force Engineering Univ., Xi'an 710077， China)

Received:2012-09-29 Revised:2012-11-30 Online:2014-02-20 Published:2014-04-02
Contact: LI Sijia

摘要/Abstract

摘要：

为了实现圆极化天线的倾斜波束，在单臂阿基米德螺旋 (Single-Arm ARchimedean Spiral， SAARS)天线的基础上，联合柱状螺旋天线的非对称结构，设计出了一款波束倾角为30°的等圈非对称圆极化天线．通过对螺旋臂参数和馈电连接线的优选，拓展了天线的带宽，优化了天线的辐射性能．在垂直孔径同轴馈电方式的激励下，同时考虑电压驻波比小于2、轴比小于3dB和30°倾斜波束的条件，天线工作的相对带宽约达16.7％．仿真和实测结果吻合较好，表明所设计的天线不仅具有良好的带宽、较高的增益，同时实现了圆极化波束倾斜．

关键词: 微带天线, 圆极化, 倾斜波束, 单臂阿基米德螺旋线, 非对称结构

Abstract:

A circularly polarized microstrip antenna with the tilted beam of 30° through the asymmetrical structure combing the single-arm archimedean spiral antenna with the helix antenna is constructed in order to make the beam tilted. The bandwidth, tilted beam, and radiation characteristics have been improved through the width optimization and coaxial feed line selection. This antenna can realize the directional radiation of circularly polarized microwaves in a definite frequency band and has a bandwidth of 16.7％ (for Voltage Standing Wave Ratio(VSWR)<2, Axis Ratio(AR)<3dB and the tilted beam of 30°) in the condition of the vertical aperture external excitation with a coaxial feed line. Simulated and measured results show that this antenna has a wideband, high gain, and tilted beam with circularly polarized microwaves.

Key words: microstrip antenna, tilted beam, circularly polarized wave radiation, single-arm archimedean spiral, asymmetrical structure

李思佳;曹祥玉;高军;郑秋容;杨欢欢. 倾斜波束非对称SAARS微带天线设计[J]. J4, 2014, 41(1): 164-169.

LI Sijia;CAO Xiangyu;GAO Jun;ZHENG Qiurong;YANG Huanhuan. SAARS microstrip antenna design with an asymmetrical structure and a tilted beam[J]. J4, 2014, 41(1): 164-169.

参考文献

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倾斜波束非对称SAARS微带天线设计

SAARS microstrip antenna design with an asymmetrical structure and a tilted beam

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