Analysis of dielectric E-plane waveguides and design of filters

Author

Kubo, Hiroshi ; Yamashita, Hiroshi ; Awai, Ikuo

Author_Institution

Dept. of Electr. & Electron. Eng., Yamaguchi Univ., Ube, Japan

Volume

46

Issue

8

fYear

1998

fDate

8/1/1998 12:00:00 AM

Firstpage

1085

Lastpage

1090

Abstract

A small-size waveguide made of high-permittivity ceramic is analyzed. The propagation constants are calculated approximately by an approach where the electromagnetic fields outside the waveguide are fully taken into consideration. The analysis values agree well with the experimental values. The constants of equivalent circuit for the metallic strip section are obtained by using a separate model for the analysis of the structure. Based on these results, bandpass filters (BPF´s) are designed and fabricated. The fabricated BPF´s have better transmission and reflection characteristics than those designed on the basis of a trough-guide model

Keywords

band-pass filters; dielectric waveguides; passive filters; permittivity; waveguide filters; waveguide theory; bandpass filters; dielectric E-plane waveguides; equivalent circuit constants; high-permittivity ceramic; metallic strip section; propagation constants; reflection characteristics; small-size waveguide; transmission characteristics; Band pass filters; Ceramics; Dielectrics; Electromagnetic waveguides; Permittivity; Propagation constant; Rectangular waveguides; Resonator filters; Strips; Surface waves;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.704950

Filename

704950