A Wideband Waveguide Slot Array Antenna Element for High-resolution SAR Application
For the synthetic aperture radar (SAR) systems,there is an increasing demand for achieving resolutions of 0.2m × 0.2m.As the range resolution and system bandwidth are inversely proportional,the system bandwidth are expected to be larger than 1GHz. Thus an antenna with wider band must be developed.Waveguide slot antenna has been implemented on several SAR satellites due to its inherent advantages such as high efficiency and power handling capacity,but its bandwidth is limited. To avoid the manufacture difficulties of the ridge waveguide,which can be used to broaden the bandwidth of the slot antenna,a novel antenna element with conventional waveguide is designed,fabricated and tested. The bandwidth of VSWR ≤1.5 is greater than 1GHz at Xband,which can meet the specifications of the system. The radiation pattern and gain agree well with the simulated results.
Yu Xiaole Ni Daning Li Zhengjun Wang Wutu
Xian Institute of Space Radio Technology Xian,Shaanxi,710000 P.R.China
国际会议
2008 International Conference on Microwave and Millimeter Wave Technology(2008国际微波毫米波技术会议)
南京
英文
1034-1037
2008-04-21（万方平台首次上网日期，不代表论文的发表时间）