Two-channel reconfigurable digital receiver for cloud radar applications

With the recent trends in wireless communication technology, the inherent problems associated with the past radio receivers are now being exterminated by the use of its digital counterparts. In the past radio receivers were designed with analog circuitry. This inherently has the same problems that all analog circuits have, overcoming this disadvantages the Two Channel Digital receiver is used for receiving the information from the target, in CLOUD RADAR's. In this paper a Two-Channel Digital receiver has been proposed which follows bandpass sampling. The DDC in the digital receiver performs frequency translation and gives programmable decimation factor. The simulation and code development were done using Matlab whereas the entire architecture of digital receiver is captured on a FPGA device (Spartan-6 SP601) interfaced with an ADC front-end circuit via the FMC connector using Xilinx.