基于ARM的功率放大器控制系统设计

doi:10.16180/j.cnki.issn1007-7820.2020.11.009

电子科技 ›› 2020, Vol. 33 ›› Issue (11): 46-48.doi: 10.16180/j.cnki.issn1007-7820.2020.11.009

基于ARM的功率放大器控制系统设计

王纪伟

江苏省盐城技师学院,江苏盐城 224002

收稿日期:2020-04-06 出版日期:2020-11-15 发布日期:2020-11-27
作者简介:王纪伟(1981-),女,讲师。研究方向:电子信息工程。
基金资助:
江苏省科技厅政策引导类计划产学研合作-前瞻性联合研究项目(BY2015058-01)

Design of Power Amplifier Control System Based on ARM

WANG Jiwei

Yancheng Technician College Jiangsu Province, Yancheng 224002, China

Received:2020-04-06 Online:2020-11-15 Published:2020-11-27
Supported by:
Jiangsu Provincial Department of Science and Technology Policy Guidance Program Industry University Research Cooperation Prospective Joint Research Project(BY2015058-01)

摘要/Abstract

摘要：

针对发射机射频链路中功率放大器工作状态不稳定的问题,文中对射频链路的工作原理进行了研究,设计功放的控制系统。系统使用基于ARM架构的STM32F103ZG芯片作为主控芯片,可以通过TTL接口实现功放工作状态的实时采集。采集的功放工作状态经上位机程序分析后,结合发射机的指标参数下发功放的控制指令并调整功放的工作状态。测试结果表明,系统在输入功率为15.9 dBm时,达到1 dB压缩点-11.8 dBm;在25.7 dBm时,达到输出的三阶节点,此时的输入三阶节点为-2.7 dBm。以上结果证明该设计可以满足发射机的指标要求。

关键词: 发射机, 功率放大器, ARM, STM32F103ZG, TTL, 上位机, 1 dB压缩点, 三阶节点

Abstract:

In order to solve the problem of unstable working state of power amplifier in RF link of transmitter, this paper studies the working principle of RF link and designes the control system of power amplifier. This system uses STM32F103ZG chip based on ARM architecture as the main control chip, which can realize the real-time acquisition of the working state of power amplifier through TTL interface. After the working state of the power amplifier is analyzed by the upper computer program, combined with the indicators of the transmitter, the control instructions of the power amplifier are issued, and the working state of the power amplifier is adjusted. The test results show that the system achieves 1 dB compression point-11.8 dBm at the input power of 15.9 dBm. Additionally,the output third-order node is reached at 25.7 dBm, and the input third-order node is -2.7 dBm, which indicates that the design can meet the requirements of the transmitter.

Key words: transmitter, power amplifier, ARM, STM32F103ZG, TTL, upper computer, 1 dB compression point, 3-connected nodes

中图分类号:

TN911.7

王纪伟. 基于ARM的功率放大器控制系统设计[J]. 电子科技, 2020, 33(11): 46-48.

WANG Jiwei. Design of Power Amplifier Control System Based on ARM[J]. Electronic Science and Technology, 2020, 33(11): 46-48.

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指标名称	指标值
信号带宽	100 MHz
合成带宽	250 MHz
带内纹波	±0.5 dB@250 MHz
三阶节点	25 dBm
边带抑制	65 dB
本振泄漏	-74 dBm

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基于ARM的功率放大器控制系统设计

Design of Power Amplifier Control System Based on ARM

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