用于无线Mesh通信的宽带线性功放模块设计  

Design of Broadband Linear Power Amplifier Module for Wireless Mesh Communication

作　　者：魏正华 杜广星 叶小兰 WEI Zheng-hua;DU Guang-xing;YE Xiao-lan(School of Electronic and Information Engineering of Changsha Social Work College,Changsha 410004,China;College of Electrical and Information Engineering,Hunan University,Changsha 410082,China;Environmental monitoring department of Changsha Environmental Protection College,Changsha 410004,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410004 [2]湖南大学电气与信息工程学院,长沙410082 [3]长沙环境保护职业技术学院环境监测系,长沙410004

出　　处：《宇航计测技术》2023年第1期50-55,共6页Journal of Astronautic Metrology and Measurement

基　　金：湖南省教育厅科学研究项目(22C1436);长沙市自然科学基金项目(kq2208037)资助。

摘　　要：针对单频点工作的无线Mesh通信系统在复杂空间电磁环境下,工作频点被占用或干扰时导致无法使用的问题,设计一种工作在(1~1.5)GHz的宽带射频线性功放模块,该模块可应用于宽带无线Mesh通信系统。在(1~1.5)GHz频带内采用6个单频点对该功放模块的驱动放大器和末级功率放大器仿真设计和模块测试。测试结果表明:①(1~1.5)GHz工作频带内,任意单频载波增益≥20 dB,输出P1dB≥43 dBm,支持射频信号峰均比(PAR)≥6 dB;②采用64QAM,20 MHz的数字射频信号输出37 dBm时,ACPR小于-34 dBc,直流功耗≤40 W;③2~4次谐波≤-50 dBc。In order to solve the problem that the single⁃frequency wireless Mesh communication system cannot be used when the working frequency is occupied or interfered in the electromagnetic environment of complex space,a broadband RF linear power amplifier module working at(1~1.5)GHz is designed,which can be applied to broadband wireless Mesh communication system.Six single frequency points in the(1~1.5)GHz band are used to the design simulation of the driving amplifier and the final power amplifier,and the module performance are tested.The test results are as follows:①In the working band of(1~1.5)GHz,gain at any single frequency carrier≥20 dB,output P1dB≥43 dBm,RF signal of peak⁃to⁃average ratio PAR≥6 dB is supported;②When 64QAM,20 MHz digital RF signal is used to output 37 dBm,ACPR≤-34 DBC,DC power consumption≤40 W;③The 2nd to 4th harmonics≤-50 dBc.

关 键 词：无线Mesh通信 射频线性功放 驱动放大器 末级功率放大器 

分 类 号：TD655.3[矿业工程—矿山机电]