The H-plane waveguide power divider can be simulated in commercial software
such as CST Microwave Studio. The post and iris structure is shown in Fig. 1.
which are typically used in H-plane T-junction for matching. The T-junction is
excited by dominant mode at the port 1 in order to divide power equally. In type1,
the dividing power is mostly controlled by the radius of post which is located in
the center of the waveguide. In type 2, the width and length of the iris which edge
is located in the center of the waveguide are key factors of the divider. These
parameters are optimized to deliver the maximum power.
The designed H-plane T-junction was simulated for S-band. The length of the
broad wall of a waveguide is 68 mm and narrow one is 35 mm. We have
confirmed that the power form port 1 is divided equally between ports 2 and 3 as
Fig. 2. The reflection is below -20 dB is realized. However, it is necessary to
suppress a peak electric field for high power system.