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Power amplification device with high efficiency and high linearity

A high-linearity, power-amplifying technology, used in power amplifiers, improving amplifiers to reduce nonlinear distortion, etc., can solve the problems of not always maintaining high linearity and large differences in nonlinear characteristics of power amplifiers

Active Publication Date: 2021-03-30
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a power amplification device with high efficiency and high linearity to solve the problems existing in the background technology from low output power to high In the large output power range of the output power, the non-linear characteristics of the power amplifier vary greatly under different drain bias voltages, and the problem of not always maintaining high linearity

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  • Power amplification device with high efficiency and high linearity
  • Power amplification device with high efficiency and high linearity
  • Power amplification device with high efficiency and high linearity

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[0026] specific implementation

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. 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.

[0028] Figure 4 It is a circuit structure diagram of a power amplifying device provided by an embodiment of the present invention. The power amplifying device provided by this embodiment can maintain good efficiency and linearity in a relatively large output power range.

[0029] Such as Figure 4 As shown, the power amplifying device includes a power supply control circuit and a linear compensation circuit. The power supply control circuit is composed of a peak detection module 10 , a first voltage calculation module 11 , a DC-DC power supply module 12 and a power amplifier module 15 electrically connected in sequence. The peak detection module 10 is ...

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Abstract

The invention discloses a power amplification device with high efficiency and high linearity, and belongs to the technical field of semiconductors, microelectronics and communication. According to thepeak power of an input radio frequency signal RF, the power supply of the power amplifier module, the voltage of the voltage operation module and the compensation amount of the adjustable predistorter are combined to generate a fixed constraint, so that the power amplifier module, the voltage operation module and the adjustable predistorter synchronously change. Therefore, the problem that high efficiency and high linearity cannot be considered at the same time in a large output power range from low output power to high output power in the prior art is solved.

Description

technical field [0001] The invention relates to the technical fields of semiconductor, microelectronics and communication, in particular to the field of radio frequency power amplifier design, in particular to a power amplification device with high efficiency and high linearity. Background technique [0002] In the design of RF power amplifier circuits, efficiency and linearity are two core indicators, which contradict each other and restrict each other. Excellent linearity index means lower power amplifier efficiency, and higher power amplifier efficiency often leads to poor linearity index, so as an important part of the radio transmitter end, how to make the power amplifier take into account high efficiency and high linearity has always been an industry issues of focus. [0003] At present, the combination of the analog predistorter APD and the high-efficiency power amplifier can ensure that the power amplifier has high efficiency while maintaining relatively good linear...

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Application Information

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IPC IPC(8): H03F3/20H03F1/32
CPCH03F3/20H03F1/32Y02D30/70
Inventor 曹韬刘友江鲍思维何松柏彭俊沈策
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS