基于ADC/DAC的软件无线电基带信号收发系统电路的设计与实现

With the development of mobile communication technology and microelectronics technology, a new communication ideas software radio came into being. When the wireless communication system hardware and software modularity, standardization and universal, its main function is done via software by software operation, control management and maintenance functions, such a system can be called software-defined radio. The base band signal transceiver system, responsible for the digital signal and analog signal mutual transformation is the bridge of analog front end and digital front-end .This article detailed the related circuit and PCB design programprinciples of the software radio base band signal transceiver system based on ADC and DAC , and tested to verify the design effect.