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一种共形宽带圆极化螺旋天线的设计
刘宗全,钱祖平,韩振平
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(解放军理工大学，南京 210007;解放军理工大学，南京 210007; 东南大学毫米波国家重点实验室，南京 210096)

摘要:

为满足共形天线低剖面特性的要求，设计并制作了一种低剖面的圆极化阿基米德螺旋天线。天线利用单臂阿基米德螺旋结构实现圆极化辐射，并采用同轴探针馈电。实测结果表明，天线在2～11.4 GHz的频率范围内回波损耗小于-10 dB，轴比小于3 dB 的频率范围为25～8.4 GHz。该天线结构简单，工作频带宽，且剖面极低，可作为多种载体的共形天线使用。

关键词: 共形天线圆极化平面螺旋宽带低剖面

DOI：

基金项目:国家自然科学基金资助项目（60872046）

Design of a conformal wideband circularly polarized spiral antenna

LIU Zong-quan,QIAN Zu-ping,HAN Zhen-ping

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Abstract:

In order to meet the demand of lowprofile property of conformal antenna, a low profile circularly polarized Archimedean spiral antenna is designed an d manufactured. The antenna realizes circular polarization by single Archimedean spiral arm which is fed by coaxial line. The measured results show that in 2～ 11.4 GHz the return loss is less than -10 dB. The bandwidth for AR (axi al ratio)<3 dB is 2.5～8.4 GHz.The antenna configuration is simple with wide bandwidth and especially its profile is extremely low. Therefore it can be used as conformal antenna for many kinds of carriers.

Key words: conformal antenna circular polarization planar spiral wideband low profile