Mixer constant linear range biasing apparatus and method

Details Mixer constant linear range biasing apparatus and method Mixer constant linear range biasing apparatus and method

2007-02-13

2007-02-13

Voung, Quochien B. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S323000, C455S332000, C455S330000, C455S326000, C455S293000

Reexamination Certificate

active

10388920

ABSTRACT:
A Gilbert cell mixer for a wireless transceiver includes a first stage that performs voltage to current conversions and that includes first and second transistors that are operated in a saturation region and third and fourth transistors that are operated in a triode region. A second stage communicates with the first stage and that performs frequency conversion. A biasing circuit communicates with the first stage to maintain a substantially constant input linear range over temperature and process variations.

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