Filter and radio communication device using the same

Details Filter and radio communication device using the same Filter and radio communication device using the same

2008-07-08

2008-07-08

Ham, Seungsook (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S134000

Reexamination Certificate

active

07397330

ABSTRACT:
A filter includes a resonant unit which has a plurality of resonators respectively formed of each microstrip line and connected in cascade with one another, and a coupling unit which has at least one inter-resonator coupling of the resonant unit in an area within a range of ±45° (⅛-wavelength) in an electrical length from a voltage maximum point at a intermediate of the microstrip line.

REFERENCES:
patent: 5055809 (1991-10-01), Sagawa et al.
patent: 5648747 (1997-07-01), Grothe et al.
patent: 6026311 (2000-02-01), Willemsen Cortes et al.
patent: 6381478 (2002-04-01), Enokihara et al.
patent: 2004/0233022 (2004-11-01), Tsuzuki et al.
patent: 0 071 509 (1983-02-01), None
patent: 0 741 430 (1996-11-01), None
patent: 1 298 757 (2003-04-01), None
patent: 1 329 977 (2003-07-01), None
patent: 62-196402 (1987-12-01), None
patent: 63-204801 (1988-08-01), None
patent: 2000-307312 (2000-11-01), None
patent: 2002-76703 (2002-03-01), None
patent: 2003-46304 (2003-02-01), None
patent: 2003-234602 (2003-08-01), None
patent: WO 99/00897 (1999-01-01), None
George L. Matthaei, et al Hairpin-Comb Filters for HTS and other Narrow-Band Applications, IEE Transactions on Microwave Theory and Techniques, vol. 45, No. 8, Aug. 1997.

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