Walking weaver image reject mixer for radio

Details Walking weaver image reject mixer for radio Walking weaver image reject mixer for radio

2006-03-14

2006-03-14

Matar, Ahmad F. (Department: 2642)

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

C455S349000, C455S350000, C455S334000

Reexamination Certificate

active

07013120

ABSTRACT:
Methods and apparatus for implementing image rejection in radio receivers or transmitters includes a Weaver image reject mixer modified so that only one local oscillator is used for the highest mixing frequency, and subsequent lower frequency mixing signals fed to the mixers are derived from digital frequency divider networks which produce both in-phase and quadrature versions of their pre-determined output frequencies. By using frequency dividers to generate these subsequent lower frequency signals, the intermediate frequencies walk; and when these frequency dividers are set to divide by multiples of two, generating quadrature signals becomes straightforward.

REFERENCES:
patent: 6148181 (2000-11-01), Otaka
patent: 6754508 (2004-06-01), Pau
Donald K. Weaver, Jr., A Third Method of Generation and Detection of Single-Sideband Signals, Proceedings of the IRE, vol. 44, No. 12, Published on Dec., 1956, pp. 1703-1705, The Institute of Radio Engineers, Inc.

Affiliated with

Also associated with

Rating

Walking weaver image reject mixer for radio does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Walking weaver image reject mixer for radio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Walking weaver image reject mixer for radio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3560654