A Design of 105GHz Waveguide Bandpass Filter

In this paper, a seven-order waveguide bandpass filter with a central frequency of 105GHz is presented. The performance of filter designed with paraments calculating from Chebyshev model is improved by simulating and optimizing via HFSS. For the improved filter, the insertion loss is less than 0.05 dB in the passband from 102.01GHz to 108.73GHz, the return loss in the passband is less than −19.51 dB, and the bandwidth is around 6.72GHz.