Design of a tunable S-band narrow-band coaxial cavity filter

Author

Wang, Peizhang ; Li, Luohu ; Shao Wei

Author_Institution

Commun. Inst., PLA Univ. of Sci. & Technol., Nanjing, China

Volume

1

fYear

2012

fDate

5-8 May 2012

Firstpage

1

Lastpage

4

Abstract

An electromagnetic model for coaxial cavity filter is theoretically analyzed in this paper. Based on this model, the calculation expressions of cavity coupling factors are derived, and the eigenmode value of each resonator unit is obtained, which are significant parameters to filter design. The 3D electromagnetic simulation software is used to analysis and optimization for the narrow-band cavity filter. Finally, the filter is fabricated and tested. The experiment and simulation results are in coincidence. In comparison with the traditional C-band cavity or waveguide narrow-band band-pass filters, the designed coaxial cavity filter is minimized in size.

Keywords

UHF filters; cavity resonator filters; circuit optimisation; eigenvalues and eigenfunctions; microwave filters; 3D electromagnetic simulation software; C-band cavity; cavity coupling factors; eigenmode value; electromagnetic model; narrowband cavity filter optimization; resonator unit; tunable S-band narrowband coaxial cavity filter design; waveguide narrowband band-pass filters; Band pass filters; Cavity resonators; Couplings; Magnetic separation; Microwave filters; Resonant frequency; Resonator filters; Eigenmode value; Full wave analysis; Narrow-band coaxial cavity filter; couple coefficient;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on

Conference_Location

Shenzhen

Print_ISBN

978-1-4673-2184-6

Type

conf

DOI

10.1109/ICMMT.2012.6229908

Filename

6229908