Title :
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
fDate :
8/1/1998 12:00:00 AM
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;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
