Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Unwanted signal suppression
Reexamination Certificate
2006-07-25
2006-07-25
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Unwanted signal suppression
C327S552000, C327S308000, C333S08100R
Reexamination Certificate
active
07081790
ABSTRACT:
Often programmable gain attenuators (PGAs) are combined with high pass filters. Adjustment of the highpass filter however can have unintended effects, such as changing the step size of the PGA. By placing the resistance of the highpass filter in parallel with a programmable attenuator divider, the steps of the PGA can be minimally affected as the highpass frequency is adjusted.
REFERENCES:
patent: 3796945 (1974-03-01), Feldman et al.
patent: 3931584 (1976-01-01), Motley et al.
patent: 3963993 (1976-06-01), Hoffman et al.
patent: 4014238 (1977-03-01), Southard
patent: 4132957 (1979-01-01), Hekimian et al.
patent: 4191995 (1980-03-01), Farrow
patent: 4274117 (1981-06-01), Tomita
patent: 4279005 (1981-07-01), Kitamura et al.
patent: 4422109 (1983-12-01), Sampei et al.
patent: 4509021 (1985-04-01), van Uden
patent: 4546651 (1985-10-01), Merrick
patent: 4555623 (1985-11-01), Bridgewater et al.
patent: 4785253 (1988-11-01), Hughes
patent: 4870370 (1989-09-01), Hedberg et al.
patent: 4912394 (1990-03-01), Sugimoto et al.
patent: 4931745 (1990-06-01), Goff et al.
patent: 4967404 (1990-10-01), Orlicki et al.
patent: 5006735 (1991-04-01), Taylor
patent: 5012460 (1991-04-01), Popovich et al.
patent: 5144267 (1992-09-01), West, Jr.
patent: 5157323 (1992-10-01), Ali et al.
patent: 5161198 (1992-11-01), Noble
patent: 5361001 (1994-11-01), Stolfa
patent: 5432478 (1995-07-01), Gilbert
patent: 5438683 (1995-08-01), Durtler et al.
patent: 5463346 (1995-10-01), Brooks
patent: 5541554 (1996-07-01), Stengel et al.
patent: 5563557 (1996-10-01), Sasaki
patent: 5684431 (1997-11-01), Gilbert et al.
patent: 5721513 (1998-02-01), Yuasa
patent: 5880618 (1999-03-01), Koen
patent: 5909645 (1999-06-01), Abramsky et al.
patent: 6026127 (2000-02-01), Lewicki et al.
patent: 6084476 (2000-07-01), Hamanishi et al.
patent: 6101376 (2000-08-01), Bell
patent: 6114980 (2000-09-01), Tilley et al.
patent: 6128479 (2000-10-01), Fitzpatrick et al.
patent: 6133784 (2000-10-01), Gregoire
patent: 6147558 (2000-11-01), Sculley
patent: 6148398 (2000-11-01), Chang et al.
patent: 6222473 (2001-04-01), Castaneda et al.
patent: 6304238 (2001-10-01), Tsuchida
patent: 6472940 (2002-10-01), Behzad et al.
patent: 6621346 (2003-09-01), Nabicht et al.
patent: 6680640 (2004-01-01), Behzad
patent: 6693491 (2004-02-01), Delano
patent: 6696892 (2004-02-01), Behzad
patent: 6731160 (2004-05-01), Behzad
patent: 6876243 (2005-04-01), Behzad
patent: 6894558 (2005-05-01), Behzad
patent: 6967529 (2005-11-01), Behzad
patent: 2004/0108892 (2004-06-01), Behzad et al.
patent: 2 060 292 (1981-04-01), None
patent: 55-68712 (1980-05-01), None
patent: 58-200623 (1983-11-01), None
patent: 59-018421 (1984-01-01), None
patent: 61-145918 (1986-07-01), None
patent: 63-69307 (1988-03-01), None
patent: 5-167364 (1993-07-01), None
patent: WO 88/00773 (1988-01-01), None
U.S. Appl. No. 09/712,410, filed Nov. 13, 1999, Behzad.
U.S. Appl. No. 09/712,415, filed Nov. 13, 1999, Behzad.
English Abstract of Japanese Patent Publication No. JP 55068712, published May 23, 1980, 1 page.
English-language Abstract of Japanese Patent Publication No. 58-200623, from http:www1.ipdl.jpo.go.jp, 1 Page (Nov. 22, 1983—Date of publication of application).
English-language Abstract of Japanese Patent Publication No. 59-018421, from http:www1.ipdl.jpo.go.jp, 1 Page (Jan. 30, 1984—Date of publication of application).
English Abstract of Japanese Patent Publication No. JP 61145918, published Jul. 3, 1986, 1 page.
English Abstract of Japanese Patent Publication No. JP 63069307, published Mar. 29, 1988, 1 page.
English Abstract of Japanese Patent Publication No. JP 5167364, published Jul. 2, 1993, 1 page.
Broadcom Corporation
Le Dinh T.
Sterne Kessler Goldstein & Fox P.L.L.C.
LandOfFree
Adjustable bandwidth high pass filter for large input... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable bandwidth high pass filter for large input..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable bandwidth high pass filter for large input... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3531051