Direct conversion circuit having reduced bit errors

Details Direct conversion circuit having reduced bit errors Direct conversion circuit having reduced bit errors

2007-04-24

2007-04-24

Vo, Nguyen T. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C455S324000

Reexamination Certificate

active

10801370

ABSTRACT:
A direct conversion circuit includes first and second mixers to which a radio frequency signal is input. An oscillator supplies the first and second mixers with local oscillation signals whose phases are orthogonal to each other. A baseband processing circuit processes baseband signals output from the first and second mixers. A level-difference correcting circuit which corrects the two baseband signals input to the baseband processing circuit so that the levels of both are equal to each other is provided in a stage before the first and second mixers. The levels of the baseband signals are corrected by changing relative levels of the radio frequency signal input to the first mixer and the radio frequency signal input to the second mixer.

REFERENCES:
patent: 4866395 (1989-09-01), Hostetter
patent: 5878089 (1999-03-01), Dapper et al.
patent: 6314278 (2001-11-01), Zamat
patent: 6714776 (2004-03-01), Birleson
patent: 2003/0003891 (2003-01-01), Kivekas et al.
patent: 2004/0162104 (2004-08-01), Ozluturk et al.
patent: 9-168037 (1997-06-01), None
patent: 2003-273947 (2003-09-01), None

Affiliated with

Also associated with

Rating

Direct conversion circuit having reduced bit errors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Direct conversion circuit having reduced bit errors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct conversion circuit having reduced bit errors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3797320