监测预警Mesh通信系统的宽带射频功率放大器设计  

Design of wideband RF power amplifier for monitoring and warning Mesh communication system

作　　者：魏正华 叶小兰 WEI Zhenghua;YE Xiaolan(School of Electronic and Information Engineering of Changsha Social Work College,Changsha 410000,China;Environmental Monitoring Department of Changsha Environmental Protection College,Changsha 410000,China)

机构地区：[1]长沙民政职业技术学院电子信息工程学院,长沙410007 [2]长沙环境保护职业技术学院环境监测系,长沙410007

出　　处：《空天预警研究学报》2023年第6期433-437,446,共6页JOURNAL OF AIR & SPACE EARLY WARNING RESEARCH

基　　金：湖南省教育厅科学研究项目(23B1108);湖南省教育厅科学研究项目(22C1436);长沙民政职业技术学院校级自科培育项目(23mypy08);湖南省自然科学基金项目。

摘　　要：为解决基于Mesh技术的实时监测预警系统中单频无线监测终端易被外部干扰而无法使用的问题,设计了一种可应用于无线监测的1.0~1.5 GHz的宽带射频功率放大器.该宽带射频功率放大器由驱动放大器和末级放大器构成.采用单载连续波和20 MHz的64QAM宽带数字射频信号测试该射频功率放大器的性能,得到:增益大于20 dB,末级放大器输出(P1dB)大于43 dBm,射频信号峰均比(PAR)大于6 dB,邻信道功率比(ACPR)小于-34 d Bc@37 d Bm,直流功耗小于40 W,第2~4次谐波小于-50 dBc.测试结果表明,该宽带射频功率放大器达到了设计要求.In order to solve the problem that the single frequency wireless monitoring terminal in the real-time monitoring and early warning system based on the Mesh technology is easy to be jammed by external interference and even cannot be used,a wideband RF power amplifier of 1.0-1.5 GHz is designed,which can be used in wireless monitoring.The broadband RF power amplifier is composed of a driving amplifier and a final-stage amplifier.When the performance of the RF power amplifier is tested by using single carrier continuous wave and 20 MHz 64 QAM broadband digital RF signal,the results are shown as follows:Gain>20 dB;final-stage amplifier output(P1dB)>43 dBm;radio frequency signal peak-to-average ratio(PAR)>6 dB;adjacent channel power ratio(ACPR)<-34 dBc@37 dBm;DC power consumption<40W,and 2nd-4th harmonics<-50 dBc.The test results indicate that the broadband RF power amplifier meets the design requirements.

关 键 词：监测预警 Mesh通信系统 宽带射频功率放大器 驱动放大器 末级放大器 

分 类 号：TN722.75[电子电信—电路与系统]