High-order F type power amplification circuit and radio frequency power amplifier

Abstract

The invention is suitable for the field of radio frequency communication and provides a high-order F type power amplification circuit and a radio frequency power amplifier. The circuit comprises a transistor, a parasitic parameter adjusting unit, a high-order harmonic impedance control unit and a fundamental wave impedance control unit, wherein the parasitic parameter adjusting unit is used for adjusting the influence of transistor parasitic parameters on F type power amplification; the high-order harmonic impedance control unit is connected with the parasitic parameter adjusting unit and used for respectively independently controlling impedance matching for second harmonics to quintuple harmonics of the transistor; the fundamental wave impedance control unit is connected between the high-order harmonic impedance control unit and a capacitor C1 and used for independently controlling impedance matching for fundamental waves of the transistor, and the capacitor C1 is further connected with a load. The accurate control of up to quintuple harmonic impedance of the F type power amplifier is achieved through the high-order harmonic impedance control unit, the energy loss of the transistor is reduced, the power amplification efficiency is improved; each harmonic impedance is independently designed, so that harmonic impedance control circuits do not affect each other, the optimized debugging at a later period is not needed, and the design complexity is reduced.

Description

Technical field [0001] The invention belongs to the field of radio frequency communication, and in particular relates to a high-order class F power amplifier circuit and a radio frequency power amplifier. Background technique [0002] With the widespread popularity of "green communications", high-efficiency, low-energy-consumption communication systems 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. Therefore, improving the transmission efficiency of the power amplifier is the key to reducing energy consumption and realizing "green communication", and improving the power amplifier 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 the ...

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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