POWER CONTROL FEEDBACK LOOP FOR ADJUSTING A MAGNITUDE OF AN OUTPUT SIGNAL

摘要

A circuit for adjusting a magnitude of a transmit signal includes a transmitter (105), providing a transmit signal (107). It also includes a transmitter amplifier (109), receiving the transmit signal (107) and a power control adjustment signal (121), and responsive thereto, providing an amplified transmit signal (111). The circuit also includes a detector (123), for detecting an amplitude of the amplified transmit signal (111). Also included is an error component (137) for determining the difference between the amplitude and a reference level (129). Further provided is a digital signal generator (155), receiving the difference (145), and responsive thereto, generating (157) a reference signal (125) and the power control adjustment signal (117, 121), where the reference level (129) is responsive to the reference signal (125).