Short millimeter wave stacked type cylindrical cavity filter for restraining parasitic mode
A technology of wave stacking and parasitic mode, which is applied in waveguide devices, electrical components, circuits, etc., can solve the problems of destroying the performance of the stop band and the parasitic mode can not meet the requirements of high-performance filtering, so as to improve the performance of the stop band and high performance Filtering, the effect of improving the optimization rate
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[0025] In order to verify the present invention, a third-order Chebyshev filter has been designed in the present embodiment, and a center frequency of 170 GHz, a relative bandwidth of 3.5%, and a high-performance band-pass filter sample with an average insertion loss of 0.7 dB in the pass band have been realized with a numerically controlled milling machine. .
[0026] The schematic diagram of the filter structure is as figure 1 As shown in , the position offset of the cylindrical cavity forms a coupling window to realize the electromagnetic energy coupling between the cavities. Its three views and size parameters are as follows figure 2 , image 3 and Figure 4 As shown; the cylindrical resonant cavity is connected to the input and output rectangular waveguides through the waveguide flange, and the alignment pins are used between the cylindrical resonant cavities to realize the precise cooperation between the cavities of each layer and with the input and output rectangular...
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