电子学报2012，Vol.40Issue(3)：542-547,6.DOI:10.3969/j.issn.0372-2112.2012.03.022
宽带双波段双极化共口径SAR天线设计
Design of Broadband Dual-Band Dual-Polarized Share-Aperture SAR Antenna
摘要
Abstract
A broadband dual-band dual-polarized (DBDP) shared-aperture array operating at X- and S- bands for the synthetic aperture radar (SAR) application is presented. Tri-resonance is introduced in the lower frequency element to broaden its intrinsic narrower bandwidth. Furthermore, several methods are employed to enhance the polarization isolation in both bands. VSWRsg 2 bandwidths of 13.1% and 11% are measured in X- and S- band,respectively,where in-band array isolation and element isolation are better than 37dB and 28dB. The measured radiation patterns match well with the theoretical ones while the cross-polarization level is suppressed under -27dB within mainlobe; the X-band scan ability of ± 27° is also confirmed by the measurement.关键词
宽带/高隔离度/双波段/双极化/共用口径/微带天线阵/非整数频率比/合成孔径雷达天线Key words
broad band/high isolation/dual-band/dual-polarization/shared aperture/irdcrostrip array/non-integral frequency ratio/ SAR antenna分类
信息技术与安全科学引用本文复制引用
孙竹,钟顺时,孔令兵,高初,汪伟,金谋平..宽带双波段双极化共口径SAR天线设计[J].电子学报,2012,40(3):542-547,6.基金项目
国家自然科学基金项目(No.60871030)和国家高技术发展研究(863)计划课题(No.2007AA12Z125) （No.60871030）
