摘要
提出了一种新型的大带宽空气介质圆极化方形贴片天线结构.天线采用同轴馈电,利用U形接地板结构,通过切角微扰并调整接地板的端板高度可满意地获得圆极化性能.该天线实测的-10dB反射损耗带宽达46.5%,比常规的GPS圆极化天线宽很多,而且结构简单,便于加工.文中给出了天线的设计及不同参数对其性能的影响.
A novel broadband circularly polarized square patch antenna on air substrate is proposed. The patch is backed by an U-shaped ground plate and excited by a probe feed. By truncating two comers of the patch and modifying the heights of two vertical ground plates, the circularly polarized radiation can be obtained satisfactorily. The measured impedance bandwidth of - 10 dB return loss reaches 46.5%, which is much wider than that of an ordinary GPS circularly polarized antenna. Furthermore, it is simple in structure and easy in fabrication. The design of the proposed antenna and the influence of various parameters are presented.
出处
《上海大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第4期331-334,共4页
Journal of Shanghai University:Natural Science Edition
关键词
微带天线
宽频带
圆极化
U形接地板
microstrip antenna
broadband
circular polarization
U-shaped ground plate
