| 摘要: |
| 为了实现便携式雷达设备的轻小型化，系统采用微带反射阵列天线替代传统的抛物
反射面天线。该天线设计的难点是如何实现雷达工作频带内的天线低副瓣特性。采用微带延
迟线的移相方案，并提出微带贴片与延迟线满足线性相移关系的匹配原则，实现了反射阵列
天线的宽带低副瓣特性。实测结果表明，在X频段32％的带宽内，天线副瓣电平低于-25
dB，并且天线效率不低于50％。 |
| 关键词: 便携式雷达 反射阵列 微带延迟线 低副瓣 |
| DOI： |
|
| 基金项目:中国电子科技集团公司第十研究所基础技术基金项目（H07003.1） |
|
| A Microstrip Reflectarray Antenna with Wide Bandwidth and Low Side lobe |
| GUAN Zhen-tao |
| (Southwest China Institute of Electronic Technology，Chengdu 610036，China) |
| Abstract: |
| To realize lighter and smaller portable radar, the traditional paraboloid ant
enna is substituted with a microstrip reflectarray antenna. The design difficul
ty of the antenna is how to keep the low sid
elobe property in the whole working band of the radar. A phasing scheme of the
microstrip delayline is used to realize low sidelobe of the m
icrostrip reflectarray antenna. The match fundamental that the microstrip patch
and delayline are satisfied with the relationship of linear phase is adopted
to realize wide bandwidth of the antenna.
Test result shows that the sidelobe of the microstrip reflectarray is below
-25 dB in the 3.2% bandwidth of the Xband,and the efficiency of the antenn
a is no less than 50%. |
| Key words: portable radar reflect array microstrip delay line low side lobe |
《电讯技术》编辑部 