Digital predistortion power amplifier and signal processing method thereof
A technology of digital pre-distortion and power amplifier, which is applied in power amplifiers, improved amplifiers to improve efficiency, transmission control/equalization, etc., and can solve the problems of limiting the power amplifier efficiency of digital pre-distortion power amplifiers, low output efficiency of digital pre-distortion power amplifiers, Set the peak amplifier and other issues in real time to achieve the effect of improving the efficiency of the power amplifier
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[0033] The digital predistortion power amplifier and its signal processing method of the present invention can extract the envelope signal of the input baseband signal and process the envelope signal into the gate voltage value of the peak amplifier. Then the present invention can be based on the envelope signal The gate voltage value of the peak amplifier is changed to set the peak amplifier to work in a high-efficiency power amplification state in real time according to changes in the envelope signal, thereby improving the power amplifier efficiency of the digital predistortion power amplifier of the present invention.
[0034] The specific embodiments of the present invention will be described in detail below in conjunction with the drawings.
[0035] The digital predistortion power amplifier of the present invention, such as figure 2 , Including digital predistortion unit, digital predistortion adaptive controller, first digital-to-analog conversion unit, up-conversion unit, po...
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