Broadband hybrid structure J-type power amplifier and design method

Abstract

The invention discloses a broadband hybrid structure J-type power amplifier and a design method. The broadband hybrid structure J-type power amplifier comprises a biasing circuit, an input matching circuit, a hybrid structure harmonic control circuit and an output fundamental wave matching circuit. The input end of the hybrid structure harmonic control circuit is connected with the output end of atransistor, an open-circuit branch micro-strip transmission line and a step impedance conversion line are mixed, and a harmonic control mode is realized by selecting a plurality of frequency points.Therefore, second harmonic short circuit of corresponding frequency points and J-type power amplifier characteristics are realized. The output fundamental wave matching circuit is connected with the mixed harmonic control circuit and used for matching a load. By adopting the technical scheme of the invention, the bandwidth of the J-type power amplifier can be expanded while the efficiency is ensured by utilizing a new hybrid structure and a multi-frequency-point implementation mode.

Description

Technical field: [0001] The invention belongs to the technical field of radio frequency circuits, and relates to a class J power amplifier with a broadband hybrid structure and a design method thereof, which are used to realize a broadband power amplifier. Background technique: [0002] With the development of 5G communication technology, the demand for communication equipment is increasing, and the requirements for hardware equipment are also increasing. Among them, power amplifiers, as an important part of communication equipment, have become the focus of research for many years. At present, the research on power amplifiers mainly includes three aspects, namely, large bandwidth improves the utilization rate of power amplifiers, high efficiency reduces unnecessary energy loss during use, and stability increases the quality of communication. [0003] Among the several aspects of the above key research, broadband and high efficiency have become the main ways to improve hardwa...

AI Technical Summary

Problems solved by technology

Although the currently used power amplifiers are very mature, it is very difficult to achieve high-efficiency power amplifiers under broadband. Most of the traditional power amplifiers are high-efficiency power amplifiers, but they are mainly aimed at a very narrow part of the frequency band. This obviously cannot meet the requirements of the current communication technology. To increase the bandwidth of the power amplifier, it is necessary to increase the structural complexity of the power amplifier, which increases the unnecessary energy loss of the power amplifier.

Therefore, the difficulty in design at this stage is mainly how to make a communication device applicable to all frequency bands while minimizing energy loss, which means that the bandwidth of the power amplifier needs to be greatly expanded and the complexity of its structure should be controlled

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