Power calibration system and calibration method of radio frequency power amplifier module

A power amplifier, radio frequency power technology, applied in improving amplifiers to improve efficiency, improving amplifiers to reduce temperature/power supply voltage changes, radio frequency circuit testing, etc. The effect of reducing loss and reducing volume

Inactive Publication Date: 2020-06-05
CHANGSHA JINGJIA MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of low accuracy of existing power detection and calibration, the present invention provides a power calibration system and calibration method of a radio frequency power amplifier module

Method used

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  • Power calibration system and calibration method of radio frequency power amplifier module
  • Power calibration system and calibration method of radio frequency power amplifier module
  • Power calibration system and calibration method of radio frequency power amplifier module

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Embodiment Construction

[0029] specific implementation plan

[0030] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] refer to figure 2 , the present embodiment provides a power calibration system for a radio frequency power amplifier module, including a radio frequency power amplifier module 100, a signal source 200, and a power detection unit 300; the radio frequency power amplifier module 100 includes a driver stage power amplifier circuit 101, a final stage power amplifier circuit 102, current detection circuit 103 and microprocessing unit 104; drive stage power amplifier circuit 101 is connected with final stage power amplifier circuit 102, and current detection circuit 103 is connected with final stage power amplifier circuit 102, and microprocessing unit 104 is connected with current detection circuit 103 ; T...

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Abstract

The invention discloses a power calibration system and calibration method of a radio frequency power amplifier module. The method comprises the steps that a signal source provides an excitation signalfor a driving stage power amplifier circuit; a micro-processing unit controls the current detection circuit to acquire a drain current of a final-stage power amplifier circuit; a power detection unitcollects the output power of the final-stage power amplifier circuit; a plurality of drain currents and a plurality of corresponding output powers acquired under the plurality of excitation signals are obtained, and a function relation taking the drain currents as independent variables and the output powers as dependent variables is determined according to the plurality of drain currents and theplurality of corresponding output powers; and a micro-processing unit stores the function relation. According to the scheme, the circuit complexity of the power amplifier is simplified, the size of the circuit is reduced, and the loss of output power is reduced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a power calibration system and calibration method of a radio frequency power amplifier module. Background technique [0002] The RF power amplifier module is the core component of communication equipment, and its output power accuracy determines the accuracy of the entire communication equipment. Generally, the communication machine requires the detection and calibration of the output power of the RF power amplifier module. In the radio frequency power amplifier module, there is generally a detection circuit to detect the output power of the power amplifier. [0003] refer to figure 1 , in the prior art, the signal source 7 provides an excitation signal, and a coupler 2 and a detection circuit 3 are arranged in the radio frequency power amplifier module 1, and the output terminal of the final stage power amplifier circuit sends the output signal into the detection circuit...

Claims

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Application Information

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IPC IPC(8): G01R21/133G01R31/28H03F1/02H03F1/30
CPCG01R21/133G01R31/2822G01R31/2834H03F1/02H03F1/30
Inventor 彭国辉阳剑平
Owner CHANGSHA JINGJIA MICROELECTRONICS
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