A Novel Element Antenna with Flat-Topped Pattern in the Applications of Limited Scan Array
A novel element antenna for limited scan phased array of LEO satellite is proposed. A flat-topped element pattern is formed by the coupling from slots. With flat-topped element pattern, the gain degradations of the array over the scan volume are improved and grating lobes outside the scan volume are suppressed. The analysis is based on multi-mode scattering matrix method, with which high calculation speed and accuracy can be achieved. The results of calculation and measurement show that this element antenna can be applied for the limited scan array with ±25° scan. The results of calculation also show that the flat-topped element pattern and the reflection coefficient keep well at least in a 10％ bandwidth.
limited scan arrays grating lobe flat-topped element pattern multi-modes scattering matriz
Hailong Du Lubin Yan
China Academy of Space Technology Beijing, China
国际会议
北京
英文
240-244
2009-10-27（万方平台首次上网日期，不代表论文的发表时间）