Patent ID: 8525595

Claim:
A power amplification device configured to amplify a radio frequency (RF) transmission signal using a supply voltage, comprising: a voltage regulation circuit having a voltage adjustment gain, wherein the voltage regulation circuit comprises: a differential amplifier configured to receive a voltage control signal and a feedback signal; a voltage regulator configured to receive a voltage regulator control signal and generate a regulated voltage from the supply voltage, wherein a regulated voltage level of the regulated voltage is set in accordance with a voltage regulator control signal level of the voltage regulator control signal; the voltage regulator being operably associated with the differential amplifier so that the differential amplifier is operable to generate the voltage regulator control signal wherein the voltage regulator control signal level adjust the regulated voltage level in accordance with the voltage adjustment gain and a first voltage difference between a voltage control signal level of the voltage control signal and a feedback signal level of the feedback signal; a feedback circuit coupled so as to generate the feedback signal from the regulated voltage and provide the feedback signal to the differential amplifier and so as to set the voltage adjustment gain of the voltage regulation circuit, wherein the feedback circuit is responsive to a second voltage difference between the voltage regulator control signal level and the regulated voltage level such that the voltage adjustment gain is reduced once the second voltage difference reaches a threshold voltage level; and a power amplification circuit operable to amplify the RF transmission signal in accordance with an amplification gain wherein the power amplification circuit is operably associated with the voltage regulation circuit such that the amplification gain of the power amplification circuit is adjusted by the regulated voltage level of the regulated voltage.