Beam shaping with limited amplitude weight values for satellite active phased array antenna  

作　　者：Zhao Hongmei Wang Huali Jin Jun Mu Shanxiang Xie Zehui 

机构地区：[1]College of Electric and Information Engineering, ZZULI, Zhengzhou 45000, China [2]Institute of Communication Engineering, PLA University Science ＆ Technology, Nanjing 210007 ,China [3]School of Electronic Engineering and Optoelectronic Techniques, NUST, Nanjing 210094,China

出　　处：《Engineering Sciences》2010年第2期62-66,共5页中国工程科学（英文版）

基　　金：The project supported by National Natural Science Foundation of China (No. 60572095);Research Foundation for Doctors of ZZULI

摘　　要：To gain the tradeoff between lower sidelobe and higher power amplifiers efficiency,a transmitting beam shaping scheme with limited amplitude weight values for satellite active phased array antenna is presented. The scheme is implemented by a dual coding genetic algorithm(GA). Phase and amplitude of array weight vectors for beam shaping are encoded by real coding and finite length binary coding,respectively,which,maintaining accuracy of results,reduces the amplitude dynamic range and improves the efficiency of power amplifiers. The presented algorithm,compared with complex-coded GA,increases the convergence rate due to the search space's decrease. In order to overcome the prematurity and obtain better global optimization or quasi-global optimization,a new dual coding GA based on "species diversity retention" strategy and adaptive crossover and mutation probability are presented.

关 键 词：active phased array antenna beam shaping SIDELOBE power amplifie~ efficiency dual coding genetic algorithm 

分 类 号：O422.7[理学—声学] TN821.8[理学—物理]