Patent ID: 8606198

Claim:
An apparatus comprising: a radio frequency (RF) power amplifier (PA) module including an RF PA configured to amplify an RF signal, wherein the RF PA module is configured to pass the amplified RF signal to an output terminal; a directional coupler having an RF input port, an RF output port, and a first coupling port, the input port configured to receive the amplified RF signal from the RF PA and to pass the amplified RF signal to the RF output port, and the directional coupler configured to produce a forward power signal at the first coupling port corresponding to a forward output power from the RF input port to the RF output port; a first matching section coupled between the RF input port and the RF PA to transform a first impedance at the RF PA to a second impedance at the RF input port; and a second matching section coupled between the RF output port and the output terminal to transform the second impedance at the RF output port to a third impedance at the output terminal.