The modified stepped waveguide T-junctions and the method of initial design

We have modified the E-plane stepped waveguide T-junction that has good matching and improved power division characteristics, by applying the three-plane mode matching technique (TPMMT). We present the design method of the E-plane stepped waveguide T-junction at the frequency band of interest. The rule of the offset length is shown to be powerful and useful. We design the structure with the matching frequency and equal power division at 1.38 fn.