Method and apparatus for a gain controlled mixer

Details Method and apparatus for a gain controlled mixer Method and apparatus for a gain controlled mixer

2007-01-30

2007-01-30

Urban, Edward F. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

C455S189100, C455S042000

Reexamination Certificate

active

10837534

ABSTRACT:
A gain controlled mixer for an integrated CMOS transceiver. Accuracy of the controlled gain may be relatively invariant over temperature, manufacturing process, and other variations attendant to circuit realizations in a CMOS transceiver, and other realizations. A plurality of substantially matched circuit elements are instantiated and disposed similarly within the gain controlled mixer, enhancing the gain accuracy of selectable gain control states. Matching gain and other functions between circuit elements is further enhanced by appropriately controlling DC operating point conditions.

REFERENCES:
patent: 5293406 (1994-03-01), Suzuki
patent: 6983135 (2006-01-01), Tsai et al.
patent: 2002/0080890 (2002-06-01), Kaczynski

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