Secondary Frequency Conversion Design for Wideband Digital Receiver Based on Polyphase Filtering
Long Hui-min · Telecommunication Engineering · 2008
This paper analyzes the digital down conversion(DDC) of wideband reconnaissance receiver IF digital signal based on polyphase filtering.After explaining the polyphase filtering structure,it introduces the implementation of DDC with emphasis on a secondary frequency conversion structure which can simplify the design of receiver and has more agility.Finally,the rationality and validity of this structure is verified through Simulink simulation.