The first transition design is realized by a shorted via between the end of the microstrip line and the bottom layer of SIW.A current is induced on the via and energy is coupled to SIW.

• 第一种转接结构是利用一短路的连通柱连接微带线的末端以及基版合成波导的底部，利用在这个连通柱上产生的电流耦合至基版合成波导达成转接。