Gain Enhancement for Reflectarray
A method to enhance gain of a reffectary by adjusting thickness of an air-layer is presented. Two circularly polarized arrays composed of gapped ring elements having variable rotation angles were studied. We found that gain of a reffectarray can be increased by adding a superstrate layer. The effect of an air layer is evaluated by studying radar cross section of a single element of the array. It is shown that radar cross section (RCS) varies as the thickness of the air layer is changed and there is an optimum thickness which results in a maximum RCS. Experiments show that gain of a reffectarray is also air thickness dependent and it also yields a maximum gain with the afore-mentioned optimum thickness.
The Nan Chang
Tatung University, Taipei, Taiwan, China
国际会议
Progress in Electromagnetics Research Symposium 2007(2007年电磁学研究新进展学术研讨会)(PIERS 2007)
北京
英文
1102-1105
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）