Electronically tunable combine filter with asymmetric response

Details Electronically tunable combine filter with asymmetric response Electronically tunable combine filter with asymmetric response

2007-06-26

2007-06-26

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S204000, C333S202000

Reexamination Certificate

active

10051144

ABSTRACT:
Electronic filters include an input, an output and a plurality of resonators series coupled between the input and the output. Each of the resonators is coupled to a tunable capacitance. In addition, a coupling means is provided between non-adjacent ones of the resonators. The resonators can include microstrip resonators, stripline resonators, resonant cavities, or other types of resonators. The tunable capacitance can be provided by tunable dielectric varactors or microelectromechanical variable capacitors. Another tunable capacitor can be included in the coupling means to provide a tunable notch response.

REFERENCES:
patent: 3602848 (1971-08-01), Leonard
patent: 4418324 (1983-11-01), Higgins
patent: 4551696 (1985-11-01), Moutrie et al.
patent: 4963843 (1990-10-01), Peckham
patent: 4992759 (1991-02-01), Giraudeau et al.
patent: 5138288 (1992-08-01), Blackburn
patent: 5192926 (1993-03-01), Sogo et al.
patent: 5227748 (1993-07-01), Sroka
patent: 5373271 (1994-12-01), Hirai et al.
patent: 5392011 (1995-02-01), Li
patent: 5416454 (1995-05-01), McVeety
patent: 5427988 (1995-06-01), Sengupta et al.
patent: 5543764 (1996-08-01), Turunen et al.
patent: 5635433 (1997-06-01), Sengupta
patent: 5635434 (1997-06-01), Sengupta
patent: 5640042 (1997-06-01), Koscica et al.
patent: 5648747 (1997-07-01), Grothe et al.
patent: 5693429 (1997-12-01), Sengupta et al.
patent: 5719539 (1998-02-01), Ishizaki et al.
patent: 5739735 (1998-04-01), Pyykkö et al.
patent: 5766697 (1998-06-01), Sengupta et al.
patent: 5830591 (1998-11-01), Sengupta et al.
patent: 5846893 (1998-12-01), Sengupta et al.
patent: 5896073 (1999-04-01), Miyazaki et al.
patent: 6018282 (2000-01-01), Tsuda
patent: 6074971 (2000-06-01), Chiu et al.
patent: 6111482 (2000-08-01), Atokawa
patent: 6300849 (2001-10-01), Takeda
patent: 6597265 (2003-07-01), Liang et al.
patent: 6686817 (2004-02-01), Zhu et al.
patent: 2002/0093400 (2002-07-01), Zhu et al.
patent: 2002/0149448 (2002-10-01), Toncich
U.S. Appl. No. 09/419,126, filed Oct. 15, 1999, Sengupta et al.
U.S. Appl. No. 09/457,943, filed Dec. 9, 1999, Sengupta et al.
U.S. Appl. No. 09/594,837, filed Jun. 15, 2000, Chiu.
U.S. Appl. No. 09/768,690, filed Jan. 24, 2001, Sengupta et al.
U.S. Appl. No. 09/834,327, filed Apr. 13, 2001, Chang et al.
U.S. Appl. No. 09/882,605, filed Jun. 15, 2001, Sengupta.
U.S. Appl. No. 10/013,265, filed Dec. 10, 2001, Shamsaifar et al.
U.S. Appl. No. 60/295,046, filed Jun. 1, 2001, Luna et al.

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