CMOS power amplifier with high linearity
A power amplifier, high linearity technology, applied in power amplifiers, amplifiers, DC-coupled DC amplifiers, etc., can solve the problems of not considering the influence of nonlinearity, limited linearity improvement, and limited application range, etc., to achieve linearity improvement , Improve linearity and improve efficiency
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[0022] The high linearity CMOS power amplifier provided in this application is used to amplify the power of the input signal in to obtain the output signal out. The input signal in of the power amplifier may be a radio frequency signal or a baseband signal or the like.
[0023] see image 3 , which is Embodiment 1 of the high linearity CMOS power amplifier provided by the present application. The embodiment 1 includes a common source amplifier CS1 and an envelope detector EvDt1. The common source amplifier CS1 receives the input signal in, amplifies its power and outputs the output signal out. On the one hand, the gate of the common source amplifier CS1 is connected to the input terminal of the power amplifier through the capacitor C1, and on the other hand, it receives the gate bias voltage Vg1 through the resistor R1. The drain of the common source amplifier CS1 is connected to the output terminal of the power amplifier through the capacitor C2 on the one hand, and receiv...
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