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Broadband hybrid F/J type power amplifier and design method thereof

A power amplifier and broadband technology, which is applied in the field of broadband hybrid F/J class power amplifier and its design, can solve the problems of large fluctuations in efficiency, affecting the performance of power amplifiers, increasing circuit complexity, etc.

Pending Publication Date: 2019-10-08
HANGZHOU DIANZI UNIV FUYANG ELECTRONIC INFORMATION RES INST CO LTD
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AI Technical Summary

Problems solved by technology

However, in this traditional harmonic control circuit method, in many cases, the efficiency fluctuation range will be too large after the bandwidth is widened, and the circuit complexity will be increased during high-order harmonic control.
And this greatly affects the performance of the power amplifier

Method used

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  • Broadband hybrid F/J type power amplifier and design method thereof
  • Broadband hybrid F/J type power amplifier and design method thereof
  • Broadband hybrid F/J type power amplifier and design method thereof

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Embodiment Construction

[0058] The following are specific embodiments of the present invention, which further elaborate on this solution. However, the present invention is not limited to these examples.

[0059] Aiming at the defect that the design efficiency and bandwidth of a single type of power amplifier cannot be balanced in the prior art, the present invention conducts a large number of theoretical and experimental studies, and conducts an in-depth analysis of the principles of Class F power amplifiers and Class J power amplifiers, and the final design can mix Two types of power amplifiers, thus broadening the bandwidth of the power amplifier while ensuring its efficiency.

[0060] see figure 1 , shows a schematic block diagram of the broadband hybrid F / J class power amplifier of the present invention, including an input matching module, a bias circuit module, a transistor, a hybrid harmonic control module, and an output fundamental wave matching module, wherein,

[0061] The input matching m...

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Abstract

The invention discloses a broadband hybrid F / J type power amplifier and a design method thereof. The broadband hybrid F / J type power amplifier comprises an input matching module, a biasing circuit module, a transistor and a hybrid harmonic control module, andan output fundamental wave matching module, wherein the hybrid harmonic control module is connected with the output end of the transistor, multi-point hybrid harmonic control matching is adopted to achieve harmonic impedance control over at least three frequency points, the second harmonic impedance of an intermediate frequency point is controlled to be short-circuited, and meanwhile, the third harmonic impedance is controlled to be open-circuited, so that the characteristics of the class F power amplifier are achieved; and cthe secondharmonic short circuit of the other two frequency points is controlled to realize the characteristics of the J-type power amplifier. Power amplifier mixing is realized; and the output fundamental wave matching module is connected with the hybrid harmonic wave control module and is used for matching the impedance behind the harmonic wave control circuit to the load impedance so as to realize the maximum efficiency transmission. By adopting the technical scheme of the invention, the high efficiency and the flatness of the power amplifier can be ensured under a broadband.

Description

technical field [0001] The invention belongs to the technical field of radio frequency circuits, and relates to a wideband hybrid F / J class power amplifier and a design method thereof, which are used to ensure the efficiency and flatness of the power amplifier under wideband. Background technique [0002] With the continuous development of mobile communications, power amplifiers have become a very important part. At the same time, the communication bandwidth continues to increase, and realizing high-efficiency power amplifiers in multiple frequency bands can reduce design costs and increase utilization. To realize the power amplifier under the multi-band is to realize the power amplifier under the broadband, so how to design the broadband power amplifier has become a research hotspot. [0003] However, in the design of power amplifiers, efficiency and bandwidth are performance indicators that are opposed to each other. Broadening the bandwidth will lead to a decrease in eff...

Claims

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Application Information

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IPC IPC(8): H03F3/217H03F1/56
CPCH03F3/2176H03F1/565
Inventor 刘国华郭灿天赐程知群周国祥董志华王永慧
Owner HANGZHOU DIANZI UNIV FUYANG ELECTRONIC INFORMATION RES INST CO LTD
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