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Journal Article A bandpass filter using dielectric coaxial resonators with a temperature‐stable stepped‐impedance structure
Cited 1 time in scopus Share share facebook twitter linkedin kakaostory
Authors
Sang-Kyu Lim, Duck-Whan Kim, Han-Young Lee, Chul An
Issue Date
2002-12
Citation
Microwave and Optical Technology Letters, v.35, no.6, pp.508-510
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1002/mop.10651
Abstract
In this paper, a bandpass filter using stepped-impedance coaxial resonators is presented. Each stepped-impedance resonator (SIR) is composed of ceramic/material to ensure temperature stability of the resonant frequency; one has a positive temperature coefficient of resonant frequency (?꼎), and the other has a negative ?꼎. A capacitively coupled three-pole bandpass filter is designed and fabricated to have a center frequency of 915 MHz and a passband bandwidth of 20 MHz. The improved temperature stability of this filter is demonstrated by experimental results.