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New Type of Planar Resonators with High Quality Factor and Their Applications for MW Pass-Band Filters

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7 Author(s)
Keys, V.N. ; St. Petersburg Electrotechnical University, St. Petersburg, Prof Popov str., 5. 197376, Russia. Tel/Fax +7(812)234-4809 ; Kozyrev, A.B. ; Hollman, E.K. ; Khazov, M.L.
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New type of coplanar ring resonator designed on base so-called "nonregular included" line is considered. Nonregular line (NRL) resonators demonstrate the higher quality factor and less dimensions in comparison with conventional ring resonators, and can be used in pass-band filters for cellular phone communication systems (0.8-2GHz). Formulas allowing to define the resonance frequency and Q-factor of NRL resonators are presented. Data of the experimental research of a set of NRL resonators with different sizes and materials (copper and superconductive films) are in a good agreement with theoretical results. The power handling capability for superconductive NRL resonators is estimated. Narrow-band four-pole copper film and high-Tc superconducting film filters based on NRL resonators were designed and tested.

Published in:

Microwave Conference, 1997. 27th European  (Volume:2 )

Date of Conference:

8-12 Sept. 1997