摘要
无线发射系统被广泛的应用,对它的射频前端进行研究十分重要.该射频前端包括滤波器模块、混频器模块、放大器模块、功放模块、天线模块,方便对后期基于FPGA数字中频部分产生的10.7 MHz中频信号进行处理,然后得到具有一定功率的433.92 MHz射频信号,并有效发射.最后对各个模块进行调试与测试,验证了该射频前端设计的正确性,实现了对数字中频输出声音信号的发射转换.
Wireless Transmission System is widely used in various situations, and it＇s important to research its RF front-end. It includes a filter module, the mixer module, the amplifier module and power amplifier modules, antenna modules, and facilitating for processing of digital IF of 10.7 MHz which produced by the digital IF module of FPGA, and getting a 433.92 MHz RF signal with a certain power that launching effectively. Finally, it debugged and tested with each module, verified the correctness of the RF front-end, and realized the sound signal of conversion and the emission was produced by the digital IF module of FPGA.
出处
《湖南城市学院学报（自然科学版）》
CAS
2012年第3期44-46,共3页
Journal of Hunan City University:Natural Science
关键词
射频前端
滤波器模块
放大器模块
功放模块
RF front-end
filter module
amplifier module
power amplifier module
