基于H形缝隙耦合的宽带圆极化微带天线
doi: 10.3724/SP.J.1146.2005.00710
Broadband Circularly Polarized H-Shaped Aperture-Coupled Microstrip Patch Antenna
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摘要: 制作并测量了一种基于H形缝隙耦合的宽带圆极化微带天线，并讨论了天线的各结构参数对天线性能的影响。测量结果表明：通过Wilkinson功分器馈电，可使天线驻波带宽达47.5％，轴比带宽达50％，方向图前后比达－21dB，实现了低后瓣宽带圆极化微带天线的设计。
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关键词:
- 微带天线;宽带圆极化天线;H形缝隙耦合
Abstract: Design of broadband circularly polarized microstrip patch antenna which is coupled by two H-shaped apertures is presented in this paper. Based upon the proximity coupling feed by the Wilkinson power divider, the proposed antenna can have a standing wave bandwidth of about 47.5% and the axial-ratio value within 3dB is about 50%. The front-to-back ratio of the antenna radiation pattern is better than #61485;21dB, which indicate the realization of the good circularly polarized and low backward radiation level characteristics. -
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