›› 2010, Vol. 23 ›› Issue (8): 58-.

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Principles of Polyphase Filtering for Digital Quadrature Detection and its Realization on FPGA

 HE Guang-Ming, HUANG Yun   

  1. (Comprehensive Planning Unit,20th Research Institute of ETGC,Xi'an 710068,China)
  • Online:2010-08-15 Published:2011-03-28


Pholyphase filtering is one of the key technology to implement digital down conversion and quadrature coherent detection,which can provide high fidelity quadrature signal for digital signal processing of radar,sonar,communication and other systems.The basic principles of polyphase filtering are discussed.The results of computer simulation of Band-Limited IF signal processing based on polyphase filtering is given.It is validated by the implementation project of wideband digitized receiver on pulse compression radar.

Key words: digital coherent transform;polyphase filtering;mirror frequency rejection

CLC Number: 

  • TN713