Double-stage inversing D-class power amplifying circuit and radio frequency power amplifier

Abstract

The invention is suitable for the field of radio frequency communication, and provides a double-stage inversing D-class power amplifying circuit and a radio frequency power amplifier. The circuit comprises an input passive component connected with a block condenser, a positive and negative double-way driving-stage F-class amplifier, a positive and negative double-way amplifying-stage inversing F-class amplifier and an output passive component, wherein the two input ends of the positive and negative double-way driving-stage F-class amplifier are connected with the two output ends of the input passive component through two block coupling condensers, the two input ends of the positive and negative double-way amplifying-stage inversing F-class amplifier are connected with the two output ends of the positive and negative double-way driving-stage F-class amplifier through two condensers, and the two input ends of the output passive component are connected with the two output ends of the positive and negative double-way amplifying-stage inversing F-class amplifier through the two condensers. By utilizing an F-class driving inversing F-class push-pull structure, according to the harmonic shaping technology, the efficiency, the power and the gain of the power amplifier are improved, the independent control from a fundamental wave to a triple frequency harmonic impedance is achieved, the design difficulty is lowered, and the tedious debugging work in the later period is lowered. In addition, due to the positive and negative double-way structural design, the power and the gain are further improved.

Description

technical field [0001] The invention belongs to the field of radio frequency communication, and in particular relates to a two-stage inverse class D power amplifying circuit and a radio frequency power amplifier. Background technique [0002] The rapid development of the wireless communication industry has made people's lives more and more convenient, which has led to the wireless communication system becoming an indispensable part of people. The continuous advancement of communication technology and the continuous strengthening of human environmental protection awareness make energy saving and emission reduction a key content that must be considered in the development of today's communication systems. As the most energy-consuming RF power amplifier in the wireless communication system, more than 85% of the power is consumed in the transceiver equipment, so how to improve the efficiency of the power amplifier has become the core of energy saving and emission reduction; at th...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a two-stage inverse class-D power amplifier circuit, aiming to solve the problems of low power gain, working efficiency and output The problem of low power and cumbersome simulation debugging

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