Amplifiers – With plural amplifier channels – Amplifying different frequencies in different channels
Reexamination Certificate
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
Arai Satoshi
Furuya Tomio
Maruyama Masashi
Matsudaira Nobuhiro
Ohyama Yasushi
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Mottola Steven J.
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