Telecommunications – Transmitter – With feedback of modulated output signal
Reexamination Certificate
2006-09-05
2006-09-05
Ramakrishnaiah, Melur (Department: 2614)
Telecommunications
Transmitter
With feedback of modulated output signal
C455S127100, C455S106000, C330S151000
Reexamination Certificate
active
07103329
ABSTRACT:
A radio frequency (RF) amplifier system includes an RF power amplifier having an input and an output, and a typical gain of 1000 or more between the input and the output. An adaptive feedback channel is coupled between the input and the output of the RF power amplifier. The adaptive feedback channel receives as inputs audio signals for modulation of the input of the RF power amplifier, a frequency command word indicative of a desired frequency and phase of the RF amplifier system, and a control word indicative of a desired power level of the output of the RF power amplifier and of a mode of operation of the RF amplifier system. In response to the inputs, the adaptive feedback channel provides as an output a degenerative feedback signal to the input of the RF power amplifier.
REFERENCES:
patent: 5237288 (1993-08-01), Cleveland
Eppele Kyle
Jensen Nathan O.
Ramakrishnaiah Melur
Rockwell Collins, Inc.
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