Patent ID: 8095092
Filing Date: 2012-01-10
Classification: H03F,H03G,H04W

Abstract:
1. A power efficient transmitter with high dynamic range, comprising: a first amplification path configured to receive a first signal and output a first amplified signal to a first port of an output power combiner when activated and provide an impedance that results in a high reflection factor when deactivated; a second amplification path configured to receive a second signal with 90° phase shift with respect to the first signal and output a second amplified signal to a second port of the output power combiner when activated and provide an impedance that results in a high reflection factor when deactivated; and a third amplification path configured to receive a third signal and output a third amplified signal to a third port of the output power combiner when activated and provide an impedance that results in an impedance that matches the output impedance when deactivated; wherein the amplification paths are selectively activated and deactivated to output a received signal with high efficiency and linearity, and wherein the first and the second amplification path are concurrently activated or deactivated.