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Method and device for improving linear efficiency of power amplifier

A power amplifier, a technology for improving power, applied in the field of electronics, can solve problems such as linearity deterioration of output signals, and achieve the effects of improving efficiency, improving efficiency, and improving linear efficiency

Pending Publication Date: 2019-12-10
苏州能讯微波集成电路有限公司
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Problems solved by technology

However, the envelope tracking technology will make the linearity of the output signal worse, so how to improve the efficiency under the premise of meeting the linearity requirements of the power amplifier has become a very worthwhile research problem

Method used

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  • Method and device for improving linear efficiency of power amplifier
  • Method and device for improving linear efficiency of power amplifier
  • Method and device for improving linear efficiency of power amplifier

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Embodiment Construction

[0050] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0051] figure 1 is a schematic flowchart of a method for improving linear efficiency of a power amplifier provided by an embodiment of the present invention. This method can be applied to power amplifiers such as Doherty power amplifiers, balanced power amplifiers and class AB power amplifiers, and is suitable for improving the efficiency of power amplifiers under the premise of meeting the linear requirements of power amplifiers. device to execute. like figure 1 As sh...

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Abstract

The invention discloses a method and device for improving the linear efficiency of a power amplifier, and the method comprises the steps: adjusting the power supply voltage of the power amplifier according to a current power amplifier power supply voltage linearly related to a linearized output signal under a current input signal; and performing the linearization processing on the power amplifier.The device for improving the linear efficiency of the power amplifier comprises an envelope tracker used for adjusting the power supply voltage of the power amplifier according to the current power amplifier power supply voltage linearly related to a linearized output signal under the current input signal; and the linearizer is used for carrying out linearization processing on the power amplifier. According to the invention, the problem that the linearity of the power amplifier becomes poor due to the improvement of the efficiency of the existing power amplifier is solved, and the efficiencyof the power amplifier is improved on the premise of meeting the linearity requirement of the power amplifier.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of electronic technology, and in particular to a method and device for improving linear efficiency of a power amplifier. Background technique [0002] The power amplifier is an important part of the wireless communication system. It is used to amplify the input signal and output it. During the process, the power amplifier converts DC energy into RF energy. The efficiency of the power amplifier will determine the efficiency of the whole wireless communication system to a large extent, and the heat dissipation requirements of the power amplifier will affect the design of the whole machine. In order to improve spectrum utilization, existing wireless communication systems mostly use modulation signals with a peak-to-average ratio. In order to avoid signal distortion and affect communication quality, the power amplifier needs to work in a linear state, and the efficiency of the power amplif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/02
CPCH03F1/02
Inventor 史伟强
Owner 苏州能讯微波集成电路有限公司
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