无线射频发射机系统设计与实现  

作　　者：张仕忠 钟俊森 张立立 

机构地区：[1]东北大学计算机科学与工程学院国家级计算机实验教学示范中心,辽宁沈阳110819

出　　处：《科技创新与应用》2019年第12期34-36,共3页Technology Innovation and Application

基　　金：国家自然科学基金资助项目(编号:61671141);2019年第十三批大学生创新训练计划资助项目

摘　　要：近些年随着以OFDM技术为主的第四代移动通信技术的广泛应用,第五代移动通信技术呼之欲出,这些技术对于通信系统中发射机和接收机的性能提出了更高的要求,信道带宽、数据传输速率、信噪比这些指标必须有大幅提升才能满足传输要求,同时以手机为主的通信电子设备的便捷化、智能化、微型化更是当今社会发展的趋势。射频发射机作为通信系统最前端的部分,是整个无线移动通信系统的基础,因此发射机性能的不断优化就显得尤为重要。文章以模块化的方式给出了一套发射机系统设计方案,包括语音放大滤波电路、调制电路、FPGA振荡电路、带通滤波器和高频功率放大电路,经过实际搭建电路测试,该套设计方案性能良好。In recent years, with the wide application of the fourth generation mobile communication technology based on OFDM technology, the fifth generation mobile communication technology is coming out. These technologies put forward higher requirements for the performance of transmitters and receivers in the communication system. Channel bandwidth, data transmission rate and signal-to-noise ratio (SNR) must be greatly improved in order to meet the transmission requirements. At the same time, the convenience, intelligence and miniaturization of communication electronic devices based on mobile phones are the trend of social development. Radio frequency transmitter, as the most front-end part of the communication system, is the basis of the whole wireless mobile communication system, so the continuous optimization of transmitter performance is particularly important. In this paper, a set of transmitter system design scheme is given in a modular way, including speech amplification filter circuit, modulation circuit, FPGA oscillation circuit, band-pass filter and high frequency power amplifier circuit. After the actual circuit test, the design scheme has a good performance.

关 键 词：OFDM 射频发射机 FPGA 调制 

分 类 号：TN929.1[电子电信—通信与信息系统]