Continuous class F amplifier

A technology of amplifier and power amplification, which is applied in the design field of continuous class F amplifiers. It can solve the problems of low power output capability and power gain capability, and limit the efficiency of continuous class F power amplifiers, and achieve the effect of avoiding impedance limitation and improving limit efficiency.

Active Publication Date: 2021-04-30
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to form the special voltage continuous waveform of the continuous type F amplifier, the second harmonic impedance and the third harmonic impedance of the output matching circuit are resistive, but this also limits the efficiency of the continuous type F power amplifier
[0004] In addition, the existing high-efficiency FET power amplifiers are often implemented based on a single common-source transistor, which is limited by a single transistor, and the power output capability and power gain capability are relatively low

Method used

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Embodiment Construction

[0020] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the implementations shown and described in the drawings are only exemplary, intended to explain the principle and spirit of the present invention, rather than limit the scope of the present invention.

[0021] An embodiment of the present invention provides a continuous class F amplifier, such as figure 1As shown, the main channel impedance matching network, the bypass filter matching network, the main channel power amplification network, the bypass power amplification network, and the two continuous F class waveform synthesis impedance matching networks; the input end of the main channel impedance matching network is the entire continuous F The input end of the class amplifier, the output end of the two-way continuous class F waveform synthesis impedance matching network is the output end of the entire continuous class...

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Abstract

The invention discloses a continuous class F amplifier which comprises a main path impedance matching network, a bypass filtering matching network, a main path power amplification network, a bypass power amplification network and a two-path continuous class F waveform synthesis impedance matching network. A stacked amplifier based on a two-way self-bias mode is adopted as a core unit of a main-way and bypass power amplification network, a two-way continuous F-type waveform synthesis technology and a continuous F-type amplifier impedance matching technology are combined, and the output voltage waveform of the amplifier is directly shaped into a special continuously-changed voltage waveform of the continuous F-type amplifier. The impedance limitation of an output network is avoided, the impedance design space of a traditional continuous class F amplifier is optimized, and the circuit has the characteristics of ultra wide band, high gain and high power output capability.

Description

technical field [0001] The invention belongs to the technical field of field effect transistor radio frequency power amplifiers and integrated circuits, and in particular relates to the design of a continuous class F amplifier. Background technique [0002] With the development of communication technology, RF front-end transmitters urgently need ultra-wideband, high-efficiency, high-gain, and high-power power amplifiers to meet the requirements of high-speed, high-reliability, and low-power consumption in communication systems. However, in the design of traditional high-efficiency power amplifiers, the transistors have to work in an overdrive mode, similar to a switch state, which can achieve high-efficiency characteristics, but its bandwidth is very narrow, which does not meet the needs of existing systems. Therefore, the bandwidth of the high-efficiency overdrive switching power amplifier has always been the technical bottleneck of the communication system. [0003] There...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/20
CPCH03F3/20
Inventor 刘林盛秦辉
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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