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Miniaturized High-Temperature Superconducting Microstrip and Coplanar Waveguide Filters
Zhewang MA Yoshio KOBAYASHI
Publication
IEICE TRANSACTIONS on Electronics
Vol.E88-C
No.7
pp.1406-1411 Publication Date: 2005/07/01 Online ISSN:
DOI: 10.1093/ietele/e88-c.7.1406 Print ISSN: 0916-8516 Type of Manuscript: Special Section PAPER (Special Section on Recent Technologies of Microwave and Millimeter-Wave Devices Focusing on Miniaturization and Advancement in Performance with Their Applications) Category: Resonators & Filters Keyword: high-temperature superconductor, microstrip spiral resonator, coplanar waveguide, bandpass filter,
Full Text: PDF>>
Summary:
Two types of miniaturized high-temperature superconducting filters are described in this paper. The first type is developed by using small-sized microstrip spiral resonators, and the second type by coplanar waveguide quarter-wavelength resonators. The filters have significantly reduced size compared with many previous HTS filters. They are designed by employing an electromagnetic simulator in combination with appropriately chosen equivalent circuits. Their measured frequency responses agree well with theoretical predictions, and show low insertion losses in spite of their small sizes.
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