Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2007-12-06
2009-06-30
Payne, David C (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
Reexamination Certificate
active
07555082
ABSTRACT:
A continuously tunable linear phase filter having a ground connection includes a three-terminal Bessel filter having an input terminal for receiving a signal, an output terminal for delivering a signal, a control terminal for receiving a control voltage, and a varactor. Each of the terminals are in signal communication with each other and the varactor is in signal communication with each of the terminals and ground, the varactor being responsive to the control voltage at the control terminal. The capacitance of the varactor is continuously adjustable in response to a change in the control voltage at the control terminal, thereby enabling continuous tuning of the continuously tunable linear phase filter in response to the control voltage.
REFERENCES:
patent: 5349644 (1994-09-01), Massey et al.
patent: 5420593 (1995-05-01), Niles
patent: 5537121 (1996-07-01), Lennen
patent: 5663734 (1997-09-01), Krasner
patent: 5712869 (1998-01-01), Lee et al.
patent: 5721555 (1998-02-01), Lennen
patent: 5781156 (1998-07-01), Krasner
patent: 5822362 (1998-10-01), Friedmann
patent: 5874914 (1999-02-01), Krasner
patent: 6055280 (2000-04-01), Genrich
patent: 6108317 (2000-08-01), Jones et al.
patent: 6380692 (2002-04-01), Newman et al.
patent: 6898235 (2005-05-01), Carlin et al.
patent: 6980608 (2005-12-01), Yamauchi
patent: 7035355 (2006-04-01), Lais et al.
patent: 7073118 (2006-07-01), Greenberg et al.
patent: 2002/0039904 (2002-04-01), Anderson
patent: 2 071 958 (1981-09-01), None
Conrad Robert James
Newman David Childress
Varela Julio Fernandez
Bolourchi Nader
Cantor & Colburn LLP
Payne David C
TSI Telsys, Inc.
LandOfFree
Device, apparatus and method for receiving data... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device, apparatus and method for receiving data..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device, apparatus and method for receiving data... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4136183