Patent ID: 8471550

Claim:
A system for providing radio frequency (RF) transmit signals, comprising: power amplifier circuitry configured to output an RF transmit signal to a load; and delivered power detection circuitry configured to detect power delivered by the RF transmit signal to the load and to provide an output signal indicative of the power delivered, the output signal being representative of incident power to the load reduced by reflected power, the delivered power detection circuitry comprising: voltage detection circuitry configured to detect a voltage level associated with a signal line for the RF transmit signal; and current detection circuitry configured to detect a current associated with a signal line for the RF transmit signal; wherein the current detection circuitry comprises an inductor in proximity to the signal line for the RF transmit signal such that a current is induced by the signal line in the inductor during operation; and wherein the current detection circuitry is further configured to output a differential current signal representative of the current level associated with the signal line for the RF transmit signal.