摘要
设计了一种单探针馈电的共口径双频圆极化微带天线。该天线采用圆形缺口贴片形成圆极化模，并通过在其内侧开特定形状的环形槽，构造了另一个较小尺寸的圆形缺口贴片，从而形成了分别对应主模和高次模的双辐射模型，获得双频圆极化特性。对天线进行了优化设计和实物加工，测试结果表明，该天线在1280±10MHz和2280±20MHz两个频段上均获得了驻波比（VSWR）小于2和轴比（AR）小于3dB的良好的阻抗匹配和圆极化特性。
A probe feed microstirp antenna is designed for obtaining dual-band circularly polarization （CP） radiation in common apeture. In the proposed antenna design, circular patches with perturbation segments are used for achieving CP radiation, and the smaller circular patch is slotting inside the larger one for achieving dual-band operation. From the measurement, the proposed antenna operates at 1285 ±10MHz and 2285 ±20MHz with VSWR less than 2 and AR less than 3dB.
出处
《通信对抗》
2009年第4期54-56,共3页
Communication Countermeasures
关键词
微带天线
双频带
圆极化
共口径
microstrip antenna
dual band
circularly polarized
common aperture
