As examples, both a multiple circumferential slotted coaxial antenna and a microstrip slot array are designed using this method to achieve shaped radiation pattern. The shaped beam is realized by adjusting the feed line that composed of stepped impedance lines. 作为应用实例,用此算法设计了串联馈电的波束赋形天线,提出了使用阶梯阻抗线对微带缝隙和同轴缝隙串联馈电以实现赋形波束设计的方法。