A Digital Down Converter (DDC) is an integral part of any Software Defined Radio (SDR) module. Digital down conversion causes a band limited high sample rate signal to be shifted to low frequency and also the sample rate of signal is reduced without losing information thereby simplifying further processing. A DDC design is efficiently implemented using programmable filters available in AD9361 transceiver together with an optional programmable design implemented on SOC.
Digital down conversion, Software defined radio, AD9361, Decimation, Down Sampling, Low pass filters