Stripline Combline Filters on Substrates Designed on High-Permittivity Ceramic Materials

摘要

Stripline bandpass combline filters designed on high-permittivity ceramic materials are analyzed. In order to form coupling between codirectional quarter-wave resonators, they are connected in the regions of their short-circuited ends by a stripline conductor. Features of the characteristics of such filters are revealed and compared with the parameters of other ceramic microwave filters. Experimental characteristics of a strip-line filter designed on a ceramics with permittivity er = 38 are presented. The experimental results are in good agreement with results of computer simulation.