Title :
Dielectric loaded cavity filter with wide spurious free region and better out-of-band rejection
Author :
Sun, Xiao-guang ; Li, Wei-zhao ; Ge, Lei
Author_Institution :
Transcend Commun. Co., Jinan
Abstract :
Spurious modes suppressions are compared between the dielectric-loaded cavity filters with cylindrical and rectangular structures in this paper. Using mode matching method, mode charts are computed to analyze that. The comparisons show that the cylindrical cavity filter has better spurious response. Also filter with cross-coupling is discussed, which has sharper out-of-band rejection. Three experimental filters are designed and the measured results have good agreement with the analysis.
Keywords :
cavity resonator filters; dielectric resonator filters; mode matching; cross-coupling; cylindrical cavity filter; dielectric loaded cavity filter; mode matching; out-of-band rejection; rectangular structures; wide spurious free region; Dielectric losses; Equations; Floors; Microwave communication; Microwave filters; Mode matching methods; Permittivity; Resonant frequency; Resonator filters; Sun; Cross-coupling; cylindrical and rectangular cavity filters; dielectric resonators; mode chart;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429622
