Patent ID: 7558541

Claim:
A method of stabilizing the phase and gain parameters within the operating bandwidth of an amplifier in a power pooling arrangement, comprising the steps of: generating a pilot signal comprising a suppressed carrier signal with a single audio sideband, the pilot signal set to the approximate center of the operating bandwidth of the amplifier; applying the pilot signal to a signal input of the amplifier; coupling off a portion of the amplified pilot signal at a signal output of the amplifier; extracting the amplified audio signal from the coupled off portion of the amplified pilot signal; using a first phase detector to receive a first phase-related signal; receiving a phase-related signal from the first phase detector; using an adjustable phase shifter configured to receive and control a phase control signal from an integrator; configuring a second phase detector to receive a second output signal, and to output a gain-related signal; configuring an adjustable attenuator to receive the gain related signal from a comparator/integrator to generate an integrated gain control signal and to influence the gain of the gain of an input communication signal in accordance with the gain control signal; feeding back the phase control signal and the gain control signal to the adjustable phase shifter and the adjustable attenuator, respectively, in order to actively modify the phase and amplitude, respectively, of an input signal to the amplifier, to compensate for phase and gain parameter changes within the amplifier.