Design of the Digital Filter in IF Digital Receiver

CIC filter and half-band filter are two kinds of important digital filters.Its design and configuration is crucial to the receive of system.In this paper,the application and design of the two kinds of filters in IF digital receiver based on the technology of software radio are discussed,including the mathematical principle,function analysis and settings.The results of the analysis and simulation indicate that using 5 stages CIC and 5 stages HB can achieve good effect.