Radio frequency mixer and method of operation

Details Radio frequency mixer and method of operation Radio frequency mixer and method of operation

2004-12-31

2009-12-22

Nguyen, Simon D (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S283000, C455S302000, C455S314000, C455S323000, C455S337000

Reexamination Certificate

active

07636562

ABSTRACT:
There is disclosed a radio frequency (RF) demodulation circuit comprising: 1) a first RF mixer having a first input port for receiving an in-phase RF signal having a frequency of RF and a second input port for receiving an in-phase local oscillator (LO) signal having a frequency of LO, wherein LO is approximately equal to one-half of RF, and wherein the first RF mixer generates a first intermediate frequency (IF) signal having a frequency of LO; 2) a second RF mixer having a first input port for receiving an out-of-phase RF signal having a frequency of RF and a second input port for receiving an out-of-phase local oscillator (LO) signal having a frequency of LO, and wherein the second RF mixer generates a second intermediate frequency (IF) signal having a frequency of LO; and 3) a first signal combiner for combining the first and second IF signals to generate a composite IF signal, wherein the first signal combiner combines a first leakage signal from the first RF mixer and a second leakage signal from the second RF mixer such that the first and second leakage signals at least partially cancel each other to produce an output leakage signal that is less than either of the first and second leakage signals.

REFERENCES:
patent: 5179728 (1993-01-01), Sowadski
patent: 5548831 (1996-08-01), Bijker et al.
patent: 5809409 (1998-09-01), Itoh et al.
patent: 5862466 (1999-01-01), Erickson
patent: 6075409 (2000-06-01), Khlat
patent: 6148047 (2000-11-01), Mohindra
patent: 6343211 (2002-01-01), Thodesen et al.
patent: 6370372 (2002-04-01), Molnar et al.
patent: 6449471 (2002-09-01), Katsura et al.
patent: 6473606 (2002-10-01), Ecklund et al.
patent: 6683919 (2004-01-01), Olgaard et al.
patent: 6693980 (2004-02-01), Linder et al.
patent: 6766157 (2004-07-01), Hunzeker et al.
patent: 6856794 (2005-02-01), Tso et al.
patent: 6868128 (2005-03-01), Lane
patent: 6901249 (2005-05-01), Kobayashi
patent: 7054610 (2006-05-01), Itoh et al.
patent: 2001/0040932 (2001-11-01), Lindquist et al.
patent: 2002/0123319 (2002-09-01), Peterzell
patent: 2002/0160738 (2002-10-01), Allott et al.
patent: 2004/0053586 (2004-03-01), Simmons et al.

Affiliated with

Also associated with

Rating

Radio frequency mixer and method of operation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Radio frequency mixer and method of operation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio frequency mixer and method of operation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4107605