High-efficiency five-order class F power amplifier

Abstract

The invention discloses a high-efficiency five-order class F power amplifier. A circuit comprises an input fundamental wave matching network, a transistor, a parasitic parameter adjusting network, a class F higher harmonic matching network, an output fundamental wave matching network and a power supply decoupling bias network. According to the invention, the mutual independent accurate control ofthe fundamental wave load impedance to the fifth harmonic wave load impedance of the transistor is realized by adopting the class F higher harmonic wave matching network, and the compact network structure greatly saves the area occupied by the microstrip line circuit, thereby remarkably reducing the design cost of the circuit board. According to the high-efficiency five-order class F power amplifier, the harmonic energy loss of a transistor is reduced by utilizing a five-order class F amplification principle, the power amplification efficiency is improved, and each harmonic impedance is independently designed, so that each harmonic impedance control circuit does not influence each other, the later optimization debugging is not needed, and the design complexity is reduced.

Description

technical field [0001] The invention belongs to the field of radio frequency communication, in particular to a high-efficiency fifth-order F-class power amplifier. Background technique [0002] With the widespread popularization of "energy saving and emission reduction", communication systems with high efficiency and low energy consumption are getting more and more attention from 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 "energy saving and emission reduction". Class F The power amplifier is a switching power amplifier. Ideally, its efficiency can reach 100%. The fundamental wave impedance in its output load impedance must meet the optimal load impedance, and the even-order harmonic impedanc...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a high-efficiency fifth-order F-class power amplifier, which aims to solve the problem of large circuit structure size when the existing F-class power amplifier circuit realizes the highest fifth-order harmonic impedance control. The implementation of the present invention For example, the compact structure is used to realize the independent control of each harmonic impedance, thereby reducing the design complexity, solving the problem of difficult debugging, and greatly saving the production cost of the circuit

Images