波导定向耦合器的设计

PRINCIPLE AND DESIGN FOR WAVEGUIDE DIRECTIONAL COUPLER

一、设计原理波导走向耦合器是由公共壁带有耦合孔的两段波导拼接而成的。由主波导输入辅波导输出,如图1所示。根据Bethe衍射原理,可分别求出辅波导正、反向传输功率为[1]:

The principles for designing waveguide directional coupler and waveguidepower-divider are systematically presented in the paper. A brief and practicalmethod for designing these components are described in detail. At once thebandwidth parameter is choosen, the relative coupling factor is determined. If thetotal coupling factor is given, then the diameters of the coupling holes, the mostimportant ones in the designing parameters are calculated by means of the calcu-lator 58 C through 58 C-84 A programm.