Design of 83GHz Rectangular Waveguide E-plane Diaphragm Bandpass Filter

A bandpass filter based on 83 GHz rectangular waveguide E-plane diaphragm is introduced in this paper. Based on the equivalent circuit and the diaphragm coupling of the rectangular waveguide, the width of the diaphragm and the length of the resonator are quantitatively analyzed to obtain more accurate filter parameters. The center frequency of the waveguide filter is 83 GHz, the bandwidth is about 1 GHz, the return loss in the passband is more than 20 dB after optimizing. The filter can be processed and applied in the engineering works.