Hardware design of short wave radio based on Software Radio

The realization of hardware circuit is the most effective way to test theory. Due to space and technical emphasis, the receiving part is the focal point of this system. This system is based on the frequency band pass sampling of the software radio, and uses a dedicated digital up / down converter chip. The system is designed to realize analog / down conversion, sampling, digital / down conversion, signal processing, analog input / output, coding conversion / reduction and so on. The corresponding key parts are demonstrated and implemented here.