Analysis for the Pattern of Deployable Truss Reflector Antenna with Substitute Physical Optics Method
Wang Le①② Gao Wen-jun① Lei Hong① Liu Xiao-meng①② Xiong Yong-hu①
①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ②(Graduate University, Chinese Academy of Sciences, Beijing 100039, China)
Abstract：Deployable truss reflector antenna will be applied broadly to Synthetic Aperture Radar (SAR) on satellite in the future, while the systematically theoretical analysis of the truss reflector antenna’s pattern is still not fully developed now. Based on the special reflector shape of deployable truss reflector antenna which is composed of a number of space triangle elements, a method that combines Physical Optics (PO) method and substitution is proposed to calculate the pattern of truss antenna illuminated by arbitrary numbers and locations of feeds in this paper. To solve the pattern, only coordinates of vertexes on the reflector are used. The method is applied to simulate the pattern of a 2.8 m×6 m-aperture deployable truss reflector antenna which is illuminated by rectangular horns line array, and the simulation results of the main pattern parameters coincide with the practical measured values and show a better performance than geometrical optics method’s simulation results. The method shows direct ties between the construction of truss antenna’s reflector and its pattern, and it realizes the electromechanical integration design of deployable truss reflector antenna.
王乐, 高文军, 雷宏, 刘肖萌, 熊永虎. 采用换元物理光学法分析桁架式可展开反射面天线方向图[J]. 电子与信息学报, 2013, 35(6): 1484-1489.
Wang Le, Gao Wen-Jun, Lei Hong, Liu Xiao-Meng, Xiong Yong-Hu. Analysis for the Pattern of Deployable Truss Reflector Antenna with Substitute Physical Optics Method. , 2013, 35(6): 1484-1489.
2013, Vol. 35 
