A broadband dual-polarization slot antenna based on substrate-integrated cavity
A broadband dual-polarization slot antenna based on substrate-integrated cavity
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DOI：
10.1109/piers.2016.7734853
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发表时间：
2016-08
期刊：
影响因子：
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通讯作者：
Ge Gao;Hu Yang;Zusheng Jin;Qi Wu
中科院分区：
文献类型：
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作者：
Ge Gao;Hu Yang;Zusheng Jin;Qi Wu
CBSA(腔背缝隙天线)具有频带宽、效率高等优点，是现代合成孔径雷达(SAR)系统的潜在选择。为此，提出了一种适用于双极化合成孔径雷达系统的宽带CBSA。通过采用双层宽槽和带线馈电，在保持宽带的同时实现了双偏振。为了提高天线的集成度，还引入了基片集成技术来形成圆柱腔。仿真结果表明，在整个X波段内，回波损耗均小于-10dB。端口隔离带宽由-15分贝以下扩展到35.9%。在大部分频段内，天线增益接近5.5 dBI。
The advantages of broad band and high efficiency make CBSA (cavity-backed slot antenna) a potential alternative for modern SAR (Synthetic Aperture Radar) systems. Therefore, a broadband CBSA is proposed for dual-polarization SAR system. By adopting double-layer wide slots and strip-lines feed, dual-polarization is achieved while still maintaining broad bandwidth. To enhance the antenna integration, substrate-integrated technology is also introduced to form a cylindrical cavity. The simulation results demonstrated that the return loss is below -10 dB within the whole X band. And the bandwidth of port isolation, which is below -15 dB, is extended to 35.9%. The antenna gain is almost 5.5 dBi over the most band.