Strategy for using the envelope information within a closed...

Details Strategy for using the envelope information within a closed... Strategy for using the envelope information within a closed...

2011-06-28

2011-06-28

Trinh, Tan (Department: 2618)

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

C455S522000, C455S069000, C455S138000, C455S418000

Reexamination Certificate

active

07970364

ABSTRACT:
A power control system includes a reference path filter used to suppress high frequencies in an input signal and generate a filtered envelope signal, a reference path amplifier to scale the filtered input signal based on a gain signal and generate a reference signal, a signal path amplifier to amplify an RF modulated signal and generate a signal path output signal scaled by a gain of an actuator signal, and a power detector to detect a power associated with the signal path output signal. The system includes an ADC to receive, pre-filter and convert the detected envelope signal into a measurement signal, and a comparator block to receive the reference signal and the measurement signal, and generate an error signal based on the difference, and a controller to generate the actuator signal for controlling the gain of the signal path amplifier based on the error signal.

REFERENCES:
patent: 2005/0009480 (2005-01-01), Vakilian et al.
patent: 2007/0072577 (2007-03-01), Rozenblit et al.
patent: 2007/0268846 (2007-11-01), Proctor et al.
patent: 2008/0101185 (2008-05-01), Rozenblit et al.

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