Design of waveguide bandpass filter using cascade inductive and capacitive irises

In this research, a bandpass waveguide filter using cascaded inductive and capacitive irises, is designed and fabricated for satellite communication system. The bandpass filters in rectangular waveguide were studied and analyzed by the CST Microwave Studio®. Thus, the proposed bandpass filters was implemented and measured by using network analyzer. The results shown that the center frequency of bandpass filter is at 4.0 GHz, and the bandwidth is equal to 100 MHz. The measured results are successfully in comparing to simulation program.