High frequency power amplifier and wireless communication...

Details High frequency power amplifier and wireless communication... High frequency power amplifier and wireless communication...

2005-07-05

2005-07-05

Mottola, Steven J. (Department: 2817)

Amplifiers

With plural amplifier channels

Amplifying different frequencies in different channels

C330S285000

Reexamination Certificate

active

06914480

ABSTRACT:
The present invention provides a high frequency power amplifier of an open-loop type, which outputs a signal having a level corresponding to an output level required under control of a power supply voltage for each output power FET, based on a control signal for the output level. The high frequency power amplifier is provided with a bias voltage generating circuit which generates a gate bias voltage of each output power FET according to an output voltage of a power control circuit for controlling the power supply voltage for the output power FET, based on the control signal for the output level.

REFERENCES:
patent: 5789984 (1998-08-01), Davis et al.
patent: 6172567 (2001-01-01), Ueno et al.
patent: 6242986 (2001-06-01), Adar
patent: 2000-151310 (2000-05-01), None

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