Gilbert mixers with improved isolation and methods therefor

Details Gilbert mixers with improved isolation and methods therefor Gilbert mixers with improved isolation and methods therefor

2005-06-30

2009-06-09

Trinh, Sonny (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S313000, C455S302000, C455S285000

Reexamination Certificate

active

07546109

ABSTRACT:
The employment of cascoding in connection with improving mixer isolation in a Gilbert mixer circuit is provided. In this vein, there is broadly contemplated herein, inter alia, the provision of a mixer suitable for use in a direct-conversion radio receiver operating in the 57-64 GHz industrial, scientific, and medical (ISM) band. Such a receiver may be integrated along with a transmitter entirely on a silicon integrated circuit and can be used to receive and transmit data signals in such applications as wireless personal-area networks (WPANs). Numerous other applications, of course, are available for a mixer with improved LO-to-RF isolation, particularly at millimeter-wave frequencies where high LO-to-RF isolation is difficult to achieve.

REFERENCES:
patent: 5884154 (1999-03-01), Sano et al.
patent: 6057714 (2000-05-01), Andrys et al.
patent: 6597899 (2003-07-01), Souetinov et al.
patent: 6774699 (2004-08-01), Lin
patent: 6972625 (2005-12-01), Nguyen et al.
patent: 7016664 (2006-03-01), Souetinov
patent: 7161406 (2007-01-01), Ferris
patent: 7177620 (2007-02-01), Tsai et al.
patent: 2007/0004367 (2007-01-01), Reynolds
Barrie Gilbert, “The Micromixer: A Highly Linear Variant of the Gilbert Mixer Using a Bisymmetric Class-AB Input Stage”, IEEE Journal of Solid-State Circuits, vol. 32, No. 9, Sep. 1997.
Barrie Gilbert, “A Precise Four-Quadrant Multiplier with Subnanosecond Response”, IEEE Journal of Solid-State Circuits, vol. SC-3, No. 4, Dec. 1968.

Affiliated with

Also associated with

Rating

Gilbert mixers with improved isolation and methods therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gilbert mixers with improved isolation and methods therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gilbert mixers with improved isolation and methods therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4097800