摘要
介绍了无线收发系统的设计过程,该系统以FPGA作为数字中频处理部分,发射机采用FM调制对信号进行处理,接收机采用数字下变频与欠采样技术,将中频信号降采样后解调,得到原信号。系统采用分模块式设计,对电路各个模块的功能和实现加以说明,设计思路灵活,结构清晰。电路在Protel99中设计完成,并用VerilogHDL语言对数字中频进行编程和程序仿真。系统已经做成实体,可以实现信号的无线发射与接收,达到设计提出的要求。
The wireless transceiver system design process is introduced.The system is used digital intermediate frequency technology in FPGA, the transmitter adopts FM modulation to deal with signal while the receiver use the DDC and the undersampling technique to sample and demodulation the IF signal for restore the original signal. The system is designed by building blocks,the function and the realization of each module circuit have been stated,making it flexible and structuring to realize.The circuit is designed and finished in Prote199,which also has been programmed and simulated with digital intermediate frequency by VerilogHDL.The system has been realized and can send or receive signal successfully.Proved to meet requirements raised by designer.
出处
《电子设计工程》
2012年第22期47-51,共5页
Electronic Design Engineering
