Amplifiers – With control of power supply or bias voltage – With control of input electrode or gain control electrode bias
Reexamination Certificate
2007-01-18
2009-02-03
Nguyen, Patricia (Department: 2817)
Amplifiers
With control of power supply or bias voltage
With control of input electrode or gain control electrode bias
C330S009000, C330S102000, C330S195000
Reexamination Certificate
active
07486137
ABSTRACT:
An architecture for detecting amplifier power is provided. The architecture includes a voltage envelope detector that receives a voltage signal and generates a voltage envelope signal. A current envelope detector receives a current signal and generates a current envelope signal. A power amplifier level controller receives the greater of the voltage envelope signal and the current envelope signal, such as by connecting the output of the voltage envelope detector and the current envelope detector at a common point and conducting the high frequency current components to ground via a capacitor. A power amplifier level control signal is then generated based on the voltage drop across the capacitor.
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International Search Report and Written Opinion for corresponding PCT/US2007/019472, dated Mar. 23, 2008 (12 pgs).
Aoki Ichiro
Aparico Joo Roberto
Kee Scott
Lyu John
Magoon Rahul
Axiom Microdevices, Inc.
Jackson Walker L.L.P.
Nguyen Patricia
Rourk Christopher J.
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