A high-order class-f power amplifier circuit and radio frequency power amplifier

Abstract

A high-order F-class power amplification circuit and a radio frequency power amplifier, which apply to the field of radio frequency communications. The high-order F-class power amplification circuit comprises: a transistor; a parasitic parameter regulating unit (11), configured to regulate the influence on an F-class power amplifier of the parasitic parameters of the transistor; a higher harmonic impedance control unit (12), connected to the parasitic parameter regulating unit (11), and configured to independently control impedance matching of second harmonics to fifth harmonics of the transistor; and a fundamental impedance control unit (13), connected between the higher harmonic impedance control unit (12) and a capacitor C1, and configured to independently control impedance matching of fundamental waves of the transistor, the capacitor C1 being connected to a load. The at most fifth harmonic impedance of an F-class power amplifier can be accurately controlled by means of the higher harmonic impedance control unit (12), the energy loss of a transistor is reduced, and the efficiency of the power amplifier is improved. Moreover, by independently designing the impedance of each harmonic, all harmonic impedance control circuits do not affect each other, later optimization debugging is not needed, and the complexity of design is reduced.

Description

technical field [0001] The invention belongs to the field of radio frequency communication, and in particular relates to a high-order F class power amplifier circuit and a radio frequency power amplifier. Background technique [0002] With the widespread popularization of "green communication", communication systems with high efficiency and low energy consumption are increasingly favored by the consumer market. As the final module of the signal transmitter in the radio frequency communication system, the radio frequency power amplifier consumes more than 70% of the energy of the transmitter system, so improving the transmission efficiency of the power amplifier is the key to reducing energy consumption and realizing "green communication". The work efficiency has become a research hotspot in academia and industry. [0003] Class F power amplifier is a switching power amplifier, ideally, its efficiency can reach 100%. The output load impedance of class F power amplifier tran...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a high-order F-class power amplifier circuit, which aims to solve the problem that the existing F-class power amplifier circuit cannot realize independent control of each harmonic impedance when realizing high-order harmonic impedance control. Complex to design and difficult to debug issues

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