Low voltage RF amplifier and mixed with single bias block and me

Details Low voltage RF amplifier and mixed with single bias block and me Low voltage RF amplifier and mixed with single bias block and me

1997-06-27

2000-01-25

Shingleton, Michael B

Amplifiers

With semiconductor amplifying device

Including gain control means

330289, 330296, 330134, 330295, H01L 21465

Patent

active

060182709

ABSTRACT:
A single bias block for a single or multiple low voltage RF circuits including one or more amplifiers and one or more single or double balanced mixers with compensation for temperature and integrated circuit process parameters. The power supply may be a lower voltage without sacrificing the dynamic range of the amplifier and/or mixer by applying full power supply voltage to the load with the bias applied to the base circuit through an operational amplifier and/or buffer circuit. For the mixer, a lower noise figure may also be realized by moving the gain control impedance from the emitter to the collector circuit. The circuits may be discrete components or part of an integrated circuit. Methods are disclosed for reducing the power supply voltage without affecting the dynamic range of an amplifier, for temperature and process parameter compensation, and for controlling the gain of a mixer without affecting input or output impedance.

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