Patent ID: 8791760

Claim:
A radio frequency (RF) amplification device, comprising: a voltage regulation circuit, comprising: a voltage regulator configured to: receive a supply voltage and a voltage regulator control signal at a voltage regulator control signal level; and generate a regulated voltage at a regulated voltage level from the supply voltage, wherein the regulated voltage level of the regulated voltage is set in accordance with the voltage regulator control signal level of the voltage regulator control signal; and a differential amplifier configured to generate the voltage regulator control signal, wherein the voltage regulator control signal level is indicative of a quiescent operating level; an amplification circuit configured to drive amplification of an RF input signal with the regulated voltage so as to generate an RF output signal from the RF input signal; and a bias circuit operable in an adjustment enable mode and in an adjustment disable mode so as to generate a bias signal at a bias signal level, the bias circuit being operably associated with the amplification circuit to apply the bias signal to the RF input signal such that the RF output signal has the quiescent operating level set in accordance with the bias signal level and the bias circuit is operably associated with the voltage regulation circuit such that the voltage regulator control signal is received by the bias circuit as a feedback signal, wherein the bias circuit is configured to: adjust the bias signal level of the bias signal such that the quiescent operating level is set to a reference signal level by adjusting the quiescent operating level based on the voltage regulator control signal level until the quiescent operating level is provided at the reference signal level when the bias circuit is operating in the adjustment enable mode; and maintain the bias signal level of the bias signal such that the bias circuit is unresponsive to the voltage regulator control signal when the bias circuit is operating in the adjustment disable mode.