Telecommunications – Receiver or analog modulated signal frequency converter – Frequency or phase modulation
Reexamination Certificate
2008-03-04
2008-03-04
Urban, Edward F. (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency or phase modulation
C455S207000, C455S209000, C455S323000, C455S189100, C327S116000, C327S119000, C327S355000
Reexamination Certificate
active
10810685
ABSTRACT:
An integrated circuit may include a receiver and/or a transmitter that performs third order sub-harmonic conversion. The integrated circuit may include a Gilbert cell active mixer with three or more serially-connected transistors in each of the mixer's four branches. Alternatively, the integrated circuit may include a quad-ring passive resistive mixer with three or more serially-connected transistors in each of the mixer's four branches. Alternatively, the integrated circuit may include a logic circuit and a mixer. The logic circuit may apply logic operations to periodic logic signals having a local frequency and to delayed versions thereof to produce reference signals having a dominant spectral component at three times the local frequency. The mixer may mix input signals with the reference signals to produce output signals having a dominant spectral component at three times the local frequency less a center frequency of the input signals.
REFERENCES:
patent: 5262735 (1993-11-01), Hashimoto et al.
patent: 5436938 (1995-07-01), Pigeon
patent: 5446923 (1995-08-01), Martinson et al.
patent: 5812939 (1998-09-01), Kohama
patent: 5844939 (1998-12-01), Scherer et al.
patent: 5898913 (1999-04-01), Pengelly et al.
patent: 6026287 (2000-02-01), Puechberty et al.
patent: 6148181 (2000-11-01), Otaka
patent: 6469585 (2002-10-01), Dai et al.
patent: 6512408 (2003-01-01), Lee et al.
patent: 6529052 (2003-03-01), Wang
patent: 6654595 (2003-11-01), Dexter
patent: 6704558 (2004-03-01), Sorrells et al.
patent: 6801585 (2004-10-01), Nguyen et al.
patent: 6980787 (2005-12-01), Dujmenovic
patent: 7079596 (2006-07-01), Namura
patent: 7085548 (2006-08-01), Kluge et al.
patent: 7139546 (2006-11-01), Petrov et al.
patent: 2005/0148310 (2005-07-01), Craninckx
patent: 2005/0266821 (2005-12-01), Dombusch
patent: 2007/0015471 (2007-01-01), Cook et al.
Gross Shai
Maimon Tzvi
Shemesh Yair
Chow Charles
Pearl Cohen Zedek Latzer LLP
LandOfFree
Integrated circuit and methods for third sub harmonic up... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integrated circuit and methods for third sub harmonic up..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated circuit and methods for third sub harmonic up... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3932479