Patent ID: 6586992
Filing Date: 2003-07-01
Classification: H03F

Abstract:
A system for variably adjusting the voltage supply of a power amplifier circuit comprising:a power amplifier; a primary voltage supply configured to supply constant voltage to the power amplifier; a control circuit configured to compare an input signal to a predetermined threshold, the control circuit further configured to generate a charge mode signal and an active mode signal, the charge mode signal generated in response to the input signal not exceeding the predetermined threshold, the active mode signal generated in response to the input signal exceeding the predetermined threshold; a capacitor circuit configured to receive the charge mode signal and the active mode signal, the capacitor circuit further configured to charge to approximately the predetermined voltage of the voltage supply in response to the charge mode signal, the capacitor circuit further configured to supply voltage in conjunction with the voltage supply to the power amplifier in response to the active mode signal.