摘要
提出了一种新型频率可重构圆极化微带贴片天线的设计。采用一种方环形贴片结构,在贴片对称缝隙中添加4个RF MEMS开关,通过调节开关的通断来实现对天线频率的可重构。同时天线采用4馈点馈电来实现右旋圆极化波,并利用仿真软件HFSS 13.0对天线特性进行了仿真验证。仿真结果表明,在开关断开时,天线可接收GPS L1、GLONASS L1和BDS B1信号,在开关闭合时,天线可接收BDS B3信号,且天线的回波损耗和轴比都能满足要求。
This paper proposes a new design of frequency reconfigurable circular polarization mierostrip patch antenna. It uses a square ring patch structure, and adds four RFMEMS switches in the symmetrical slot on the crossed patch. By adjusting the switch-off, it achieves the frequency reconfigurable antenna. The antema uses Four-fed feed point to achieve the right-handed cir- cularly polarized wave. And simulation software HFSS 13.0 is used to conduct a simulation. The results show that, when the switch is off, antenna can receive GPS LI, GLONASS L1 and BDS BI signal. And when the switch is on, antenna can receive BDS B3 signals. In addition, the return loss and axial ratio of the antenna can meet the requirements.
出处
《微型机与应用》
2014年第8期13-15,共3页
Microcomputer & Its Applications
关键词
圆极化微带天线
频率可重构
谐振频率
回波损耗
circular polarized microstrip antenna
frequency reconfigurable
resonant frequency
return loss
