采用双层层叠结构的圆极化微带天线设计分析

A Circularly Polarized Microstrip Antenna with Dual-Layer Stacked Structure

随着无线通信的不断发展,如何展宽微带天线的带宽一直备受人们关注。本文通过采用层叠结构来达到增加微带天线带宽的目的,这种圆极化微带天线结构使得3d B轴比带宽从单层时的6.4MHz扩展到双层时的10.1MHz,同时阻抗带宽达到51MHz。

With the continuous development of the wireless communication, how to increase the bandwidth of the microstrip antenna has absorbed in burgeoning concern. In this paper, a wide band circularly polarized microstrip antenna is proposed. A stacked structure is introduced to achieve an increased bandwidth. The proposed antenna performs well both on axial ratio(AR) bandwidth and impedance bandwidth. The AR bandwidth of the proposed antenna is 10.1 MHz, which of the single layer structure is about 6.4 MHz. The impedance bandwidth of the proposed antenna is 51 MHz centered on 1.57 GHz.