A continuous inverse class-f power amplifier based on source harmonic phase difference control

By designing a continuous inverse Class-F power amplifier based on source harmonic phase difference control, and utilizing a special source matching network to control the second harmonic phase difference of the transistor gate, the fundamental and second harmonic impedance distributions are optimized, thus solving the impact of input harmonic control on the power amplifier performance and achieving improved power amplifier efficiency and simplified load impedance design.

CN116545394BActive Publication Date: 2026-06-23CHONGQING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING UNIV OF POSTS & TELECOMM
Filing Date
2023-05-12
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing technologies neglect the impact of input harmonic control and source matching on power amplifier performance over a wide bandwidth, leading to increased complexity in fundamental impedance design and decreased efficiency.

Method used

Design a continuous inverse Class-F power amplifier based on source harmonic phase difference control. Employ a special source matching network, including a DC blocking network, a bias network, and a harmonic control network. By controlling the second harmonic phase difference of the transistor gate, optimize the distribution of the fundamental and second harmonic impedances.

Benefits of technology

Under continuous inverse Class F load impedance conditions, the efficiency of the power amplifier is significantly improved, the load impedance design space is expanded, and the complexity of the load matching network is simplified.

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Abstract

The application relates to a continuous inverse class-F power amplifier based on source harmonic phase difference control and belongs to the wireless communication field. The power amplifier uses a special source matching network to control a transistor gate waveform, the source matching network is composed of a DC blocking network, a bias network and a harmonic control network; under the condition of a continuous inverse class-F load impedance, the source matching network designed by the application controls the second harmonic phase difference value of the transistor input end by using a series ladder microstrip line to form a T-shaped structure, so that excellent efficiency can be obtained, the load impedance design space can be expanded, and the complexity of a load matching network can be reduced.
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