Study of a dielectric ceramic waveguide filter with asymmetric transmission zeros by using cascaded trisection

초록

We studied dielectric ceramic waveguide filters using cascade trisection (CT) cross-coupled structures with an odd number of resonators between non-adjacent resonators. A dielectric ceramic waveguide (DCW) filter was designed based on the asymmetric attenuation pole in the desired frequency band. The DCW consisted of rectangular ceramic resonators with an even number of resonators between non-adjacent resonators. DCW filters satisfy the demands for selectivity, band rejections, and pass band insertion loss. For the multiple coupled resonator filters, the extraction of circuit elements with conversion to a coupling matrix was described. The designed DCW filter agreed with the simulation results.

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