Zoom FFT Based on Polyphase Filtering Structure and Its FPGA Implementation
Hongwu Yang · Electrical Measurement & Instrumentation · 2010
Considering complicated computation and low processing speed of traditional Zoom FFT,this paper proposed a novel structure for implementing Zoom FFT with FPGA.In the paper,we designed this structure and implemented it with FPGA.When implementing it with hardware,the traditional implementation method of polyphase filter with hardware was improved,then this improved polyphase filter and DDS technology were applied into the design of Zoom FFT.Simulation result indicates that this structure can reduce FPGA resources consuming and achieve high processing speed compared with traditional implementation method of Zoom FFT.