Harmonic rejection gated-switching mixer

Details Harmonic rejection gated-switching mixer Harmonic rejection gated-switching mixer

2007-11-20

2007-11-20

Nguyen, Tony T. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

C455S130000, C455S227000, C455S284000

Reexamination Certificate

active

10457825

ABSTRACT:
Rejection of local oscillator harmonic response is provided in a mixing circuit with a pair of harmonic gating switches serially connected to the outputs of a balanced differential switching mixer and controlled by a gate clock signal having twice the frequency of a local oscillator signal controlling the switching mixer. An aperture or duty cycle of the gate clock signal determines which harmonic is rejected or suppressed, which is preferably a third and/or fifth harmonic since response of the balanced differential switching mixer to even harmonics is negligible. The resulting simple, efficient circuit is readily integrated directly into a phase-alternating mixer structure for a chopper-direct-conversion radio.

REFERENCES:
patent: 3569841 (1971-03-01), Richman
patent: 4468784 (1984-08-01), Jagnow et al.
patent: 4894621 (1990-01-01), Koenig et al.
patent: 5350413 (1994-09-01), Miller
patent: 5867778 (1999-02-01), Khoury et al.
patent: 6108529 (2000-08-01), Vice et al.
patent: 6144236 (2000-11-01), Vice et al.
patent: 6639447 (2003-10-01), Manku et al.
patent: 2004/0142674 (2004-07-01), Kuiri

Affiliated with

Also associated with

Rating

Harmonic rejection gated-switching mixer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Harmonic rejection gated-switching mixer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Harmonic rejection gated-switching mixer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3891030