A new method in DFD design

This paper provides a new technology of digital frequency discriminator (DFD) design. After a brief introduction on the definition and some historical remarks, the paper concentrates on the two different design in DFD. The method based on correlator arrays is analysed which is widely applied in IFM systems. The paper presents a new digital countering technology to realize a DFD with smaller volume, the parameters and prototype are also shown.