A Low-Loss Millimeter Wave Bandpass Filter Using Whispering-Gallery Mode Dual Disk Resonators

Yoshinori KOGAMI
Yosuke SATO
Kazuhito MATSUMURA

Publication
IEICE TRANSACTIONS on Electronics   Vol.E84-C    No.10    pp.1581-1582
Publication Date: 2001/10/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Issue on Millimeter-Wave Circuits and Fabrication Technologies Opening up the 21st Century)
Category: 
Keyword: 
millimeter wave filter,  whispering gallery mode,  dielectric disk resonator,  

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Summary: 
The millimeter wave filter using two whispering-gallery mode dielectric disk resonators is presented in this paper. The coupling coefficients of dual disk resonators and the external Q values of the single resonator excited by a dielectric waveguide are investigated theoretically and experimentally. A 2-stage bandpass filter which is designed at the center frequency of 69.85 GHz with a bandwidth of 500 MHz shows a low-loss property of 1.8 dB insertion loss.