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IEICE TRANSACTIONS on Electronics

Design and Measurement of a Miniaturized HTS Filter Using Microstrip Spiral Resonators

Zhewang MA, Erito SAKURAI, Yoshio KOBAYASHI

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Summary :

A high temperature superconductor (HTS) filter is designed and measured at 1.93 GHz, using microstrip half-wavelength spiral resonators. Resonant and coupling characteristics of miniaturized microstrip spiral resonators are investigated first. Then a 4-pole Chebyshev bandpass filter with a very narrow passband (4.1 MHz) is designed and realized using microstrip spiral resonators. The filter is fabricated using HTS YBCO films deposited on a LaAlO3 substrate. The measured frequency response of the filter agrees reasonably with the specifications, and shows that the filter owns excellent property of spurious resonance rejection over a wide frequency range.

Publication
IEICE TRANSACTIONS on Electronics Vol.E88-C No.2 pp.216-220
Publication Date
2005/02/01
Publicized
Online ISSN
DOI
10.1093/ietele/e88-c.2.216
Type of Manuscript
Special Section PAPER (Special Section on Superconducting Electronic Devices and Their Applications)
Category
Microwaves

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