Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Reexamination Certificate
2007-01-09
2007-01-09
Ham, Seungsook (Department: 2817)
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
C333S219000
Reexamination Certificate
active
10934463
ABSTRACT:
A center conductor having a length L1, which is equivalent in electrical length to one quarter wavelength, and ground conductors disposed on the opposite sides of the center conductor with a gap portion therebetween in coplanar manner are formed on a dielectric substrate. The center conductor and the ground conductors located on the opposite sides thereof, and are connected together by shorting ends. This results in the formation of corner areas, respectively, whereby obtaining a coplanar waveguide resonator. An edge line of the shorting end is recessed to have a curve configuration so that each corner area has an angle greater than 90 degrees, which reduces power current concentration at the corner points in the respective corner areas.
REFERENCES:
patent: 3967223 (1976-06-01), McAvoy
patent: 4371853 (1983-02-01), Makimoto et al.
patent: 5105173 (1992-04-01), Itou
patent: 6130189 (2000-10-01), Matthaei
patent: 6262640 (2001-07-01), Tsujiguchi
patent: 6823201 (2004-11-01), Kai et al.
patent: 0 933 831 (1999-08-01), None
patent: 8-46413 (1996-02-01), None
patent: 9-232820 (1997-09-01), None
patent: 10-290105 (1998-10-01), None
patent: 11-220304 (1999-08-01), None
patent: 2002-330001 (2002-11-01), None
patent: 2002-343877 (2002-11-01), None
patent: WO 01/56107 (2001-02-01), None
Tatsuya Tsujiguchi, et al., “A Miniaturized End-Coupled Bandpass Filter Using λ/4Hair-Pin Coplanar Resonators”, IEEE MTT-S Digest, 0-7803-4471-5/98, 1998, pp. 829-832.
Ikuo Awai, et al., “Coplanar Stepped-Impedance-Resonator Bandpass Filter”, China Japan Joint Meeting On Microwaves, 2000, pp. 1-4.
Hideyuki Suzuki, et al., “A Low-Loss 5 GHZ Bandpass Filter Using HTS Quarter-Wavelength Coplanar Waveguide Resonators”, IEICE Trans. Electron, vol. E85-C, No. 3, Mar. 2002, pp. 714-719.
Xiangying Wu, et al., “Quality Factors of Coplanar Waveguide Resonators”, Microwave Conference, XP-010374270, Nov. 30, 1999, pp. 670-673.
Zhewang Ma, et al., “A Low-Loss 5GHz Bandpass Filter Using HTS Coplanar Waveguide Quarter-Wavelength Resonators”, Proceedings of the 2002 International Microwave Symposium, XP-001113984, Jun. 2-7, 2002, pp. 1967-1970.
Koizumi Daisuke
Narahashi Shoichi
Satoh Kei
Yamao Yasushi
Ham Seungsook
NTT DoCoMo Inc.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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