Patent ID: 8315581
Filing Date: 2012-11-20
Classification: H03G,H04W

Abstract:
1. A transmitter in a communication device comprising: a pre-amplifier and buffer that amplifies a voltage input signal, a modulator that converts the amplified signal into a radio frequency-modulated signal; a variable gain amplifier (VGA) that controls an output power of the radio frequency-modulated signal, wherein the output power is adjusted by adjusting a gain of the VGA in accordance with a hybrid power control loop that includes open loop mode control and closed loop control; a multiplier that controls the output power of the radio frequency-modulated signal, wherein the output power is adjusted by adjusting a gain of the multiplier in accordance with the hybrid power control loop that includes open loop mode control and closed loop control; and a single hybrid control port from which output power of the transmitter is controlled using both open and closed loop modes.