Doherty power amplifier and method for processing radio-frequency signal thereby
A technology of power amplifiers and radio frequency signals, which is applied in the direction of improving amplifiers to improve efficiency, electrical components, transmission systems, etc., and can solve the problems of limiting the improvement of Doherty power amplifier power amplifier efficiency, real-time setting of peak amplifiers, and low output efficiency of Doherty power amplifiers. , to achieve the effect of improving efficacy and efficiency
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[0025] In the Doherty power amplifier and the method for Doherty power amplifier processing radio frequency signals of the present invention, the search unit sequentially outputs the digital grid voltage value when the peak amplifier works efficiently according to the value of each envelope signal, and the grid voltage value processing unit converts each digital The grid voltage value is converted into an analog grid voltage value suitable for peak amplifier operation, which ensures that the peak amplifier works in a high efficiency state in real time according to the change of the input RF signal envelope, which improves the efficiency of the peak amplifier and thus the Doherty power amplifier The effect of.
[0026] The present invention will be described in detail below in conjunction with the drawings and specific embodiments.
[0027] The Doherty power amplifier of the present invention, such as figure 2 , Including down-conversion processing unit, up-conversion processing u...
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