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Title:
DUAL-BAND RESONATOR AND DUAL-BAND BANDPASS FILTER USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/203521
Kind Code:
A1
Abstract:
Provided is a dual-band resonator which can be downsized further than conventional ones. A dual-band resonator 10 is provided with a first conductor 20 and a second conductor 30. The first conductor 20 is configured to be folded at a first folding part 21 at the center so that both extensions are in a prescribed direction and adjacent to one another with a prescribed space therebetween, wherein a conductor part 26 closer to one end 28 side than the first folding part 21 and a conductor part 27 closer to the other end 29 side than the first folding part 21 are further folded at second folding parts 22 between the one end 28 and the first folding part 21 and between the other end 29 and the first folding part 21, respectively, in a direction in which the one end 28 and the other end 29 are apart from each other. The second conductor 30 extends in a prescribed direction contiguously to the first folding part 21 of the first conductor 20. The first conductor 20 constitutes a half-wavelength resonator, and odd-mode resonance occurs in the first conductor 20. The first conductor 20 and the second conductor 30 constitute a half-wavelength resonator, and even-mode resonance occurs in the first conductor 20 and the second conductor 30.

Inventors:
SEKIYA Naoto (4-4-37 Takeda, Kofu-sh, Yamanashi 10, 〒4008510, JP)
UNNO Takahiro (4-4-37 Takeda, Kofu-sh, Yamanashi 10, 〒4008510, JP)
TSURUOKA Tsutomu (16-46 Minami-Kamata 2-chome, Ota-k, Tokyo 51, 〒1448551, JP)
KISHIDA Kazuhito (11-1, Osaki 1-chome, Shinagawa-k, Tokyo 32, 〒1410032, JP)
SATO Yasuo (2-1, Fukuura 2-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
KITADA Noritaka (2-1, Fukuura 2-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
Application Number:
JP2018/017180
Publication Date:
November 08, 2018
Filing Date:
April 27, 2018
Export Citation:
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Assignee:
TOKYO KEIKI INC. (16-46, Minami-Kamata 2-chome Ota-k, Tokyo 51, 〒1448551, JP)
THE JAPAN STEEL WORKS, LTD. (11-1, Osaki 1-chome Shinagawa-k, Tokyo 32, 〒1410032, JP)
UNIVERSITY OF YAMANASHI (4-4-37, Takeda Kofu-sh, Yamanashi 10, 〒4008510, JP)
International Classes:
H01P7/08; H01P1/203
Foreign References:
JP2009130699A2009-06-11
JP2015015560A2015-01-22
JP2015142297A2015-08-03
JP2016111671A2016-06-20
Other References:
SEKIYA, NAOTO ET AL.: "Design of Miniaturized HTS Dual-Band Bandpass Filters Using Stub-Loaded Meander Line Resonators and Their Applications to Tri-Band Bandpass Filters", IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol. 25, no. 3, 2015, pages 1 - 5, XP011573062
LIU, HAIWEN ET AL.: "Dual-Band High-Temperature Superconducting Bandpass Filter Using Dual-Mode Hairpin Ring Resonator", IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol. 26, no. 7, 2016, XP011618117
Attorney, Agent or Firm:
IWAIKE Mitsuru et al. (Sapia Tower, 1-7-12 Marunouchi, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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