Patent ID: 7088969

Claim:
A highly linear power amplifier comprises: component; first transistor pair coupled in series with the component, wherein a first transistor of the first transistor pair is coupled to receive an input signal and wherein a second transistor of the first transistor pair is coupled to receive a first enable signal and is configured to enable the first transistor of the first transistor pair when the first enable signal is enabled and to disable the first transistor of the first transistor pair when the first enable signal is not enabled; and second transistor pair coupled in series with the component, wherein a first transistor of the second transistor pair is coupled to receive the input signal, wherein a second transistor of the second transistor pair is coupled to receive a second enable signal and is configured to enable the first transistor of the second transistor pair when the second enable signal is enabled and to disable the first transistor of the second transistor pair when the second enable signal is not enabled, wherein when the first enable signal is enabled the highly linear power amplifier has a first gain with a first linearity and when the second enable signal is enabled the highly linear power amplifier has a second gain with the first linearity.