中文摘要：

针对天线宽带匹配网络的设计,各种不同的方法相应地被提出,其中对天线的输入阻抗进行匹配是一种有效的方法.利用精英保留非劣排序遗传算法（NSGA-II）设计宽带天线匹配网络,实现网络输入端口反射系数和传输功率增益的多目标优化.仿真实验表明,所设计的宽带天线匹配网络具有随天线阻抗变化灵敏度低的优点,天线效率达到50%以上,证明了NSGA-II算法的有效性.

英文摘要：

Different design methods are proposed for the broadband antenna matching network, in which matching the input impedance of the antenna is an effective way. The broadband antenna matching network are designed by utilizing Non-dominated Sorting Genetic Algorithm II （NSGA-II）. Multi-objective optimization of the input reflectance and the transmission power gain are realized. Simulation results show that the designed anten- na matching network has the advantage of less sensitivity with varying antenna impedances, and its the efficiency researches above 50%, which proves the validity of the NSGA-II.