中文摘要：

为了获得在更低的 sidelobe 之间并且更高的折衷，驱动放大器效率，有为卫星的有限振幅重量值的播送横梁塑造计划活跃分阶段执行的数组天线是 presented.The 计划被双割让实现为横梁塑造的数组重量向量的基因算法( GA ) .Phase 和振幅被真实编码和分别地，编码的有限长度二进制代码编码它，维持结果的精确性，减少振幅动态范围并且改进效率 o

英文摘要：

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.