Electronic Science and Technology ›› 2021, Vol. 34 ›› Issue (2): 1-6.doi: 10.16180/j.cnki.issn1007-7820.2021.02.001

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A Control Method of Power up Bias Sequence of Radio Frequency Amplifier

HE Qiang,YANG Qinghui,ZHANG Huaiwu   

  1. State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,Chengdu 610054,China
  • Received:2019-11-07 Online:2021-02-15 Published:2021-01-22
  • Supported by:
    Industry-University Cooperation Collaborative Education Project of Ministry of Education(201802082014);Science and Technology Innovation Project of Universities in Shanxi Province(20171109);Research Project on Education Reform of Universities in Shanxi Province(J2018169);Teaching Reform Innovation Project of Yuncheng University(JG202002);Teaching Reform Innovation Project of Yuncheng University(JG202015);Teaching Reform Innovation Project of Yuncheng University(JG202016);National Natural Science Foundation of China(61021061);National Natural Science Foundation of China(51272036);National Natural Science Foundation of China(51472046);National Natural Science Foundation of China(51002021);National Natural Science Foundation of China(61131005);International Cooperation Foundation of China(2012DFR10730);International Cooperation Foundation of China(2013HH0003)


The RF amplifier has the problems of complicated power-on sequence and inaccurate delay, and the bias point is not easy to meet the requirements of the device. To solve these problems, a method of controlling the power on timing sequence and bias point of RF amplifier based on STM32F302K8 is proposed in the present study. The method controlls the power chip to delay power-on by the microcomputer IO to ensure that the HMC637 drain power supply and the gate power supply are sequentially powered up.According to the ADC sampling bias current the DAC is used to adjust the HMC637 gate voltaget to make the bias current reach the required value. The test results show that the proposed method can realize the power-on sequence of each power supply at intervals of 6 ms, and adjust the gate voltage of HMC637 to make the bias current reach the target value of 400 mA, which fully meets the requirements of the chip. Additionally, the design is not affected by the device technology, and has self-adaptability and broad application prospect.

Key words: MATLAB GUI, digital signal processing, simulation platform, convolution, CZT, FFT, power spectrum, IIR, FIR, adaptive filter, RF amplifier, STM32, power up sequence, bias current, ADC, DAC

CLC Number: 

  • TN911.72