A SINGLE-LAYER POWER DIVIDER FOR A SLOTTED WAVE-GUIDE ARRAY USING PI-JUNCTIONS WITH AN INDUCTIVE WALL

The authors propose a waveguide pi-junction with an inductive wall. Ga lerkin's method of moments is applied to analyze it and small reflecti on and desired power division ratio is realized. Good agreement betwee n the calculated result and the measured one verifies the design of a unit pi-junction. The characteristics of a pi-junction with a wall are almost the same as those of a conventional pi-junction with a post. I mportant advantage of the new pi-junction with a wall is that it can b e manufactured in the die-cast process of the waveguide while a post i n the conventional one must be attached in an additional process. A 16 -way power divider consisting of 8 pi-junctions is designed at 11.85 G Hz and the characteristics are predicted.