Electrically Tunable Superconducting Microstrip Line Band-Pass Filter for Mobile Applications

Hiroyuki KAYANO, Hiroyuki FUKE, Fumihiko AIGA, Mutsuki YAMAZAKI, Yoshiaki TERASHIMA, Tatsunori HASHIMOTO

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Summary :

2 GHz band electrically tunable superconducting microstrip line band-pass filter was developed. The tunable filter used a thin interdigital electrode. The dielectric distribution of SrTiO3 substrate included a calculated nonlinear effect of the electrode and ferroelectric material. As a result, the tunable microstrip line filter design with interdigital electrode enabled calculation by the finite element method and the moment method. The tunable filter with a measured unloaded Q factor of 9700 and a frequency shift of 1.25 MHz was obtained.

Publication
IEICE TRANSACTIONS on Electronics Vol.E88-C No.2 pp.221-225
Publication Date
2005/02/01
Publicized
Online ISSN
DOI
10.1093/ietele/e88-c.2.221
Type of Manuscript
Special Section PAPER (Special Section on Superconducting Electronic Devices and Their Applications)
Category
Microwaves

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