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An extensible complex fast Fourier transform processor chip for real-time spectrum analysis and measurement

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3 Author(s)
Cetin, E. ; Dept. of Electron. Syst., Westminster Univ., London, UK ; Morling, R.C.S. ; Kale, I.

This paper describes in detail the design of a CMOS custom fast Fourier transform (FFT) processor for computing a 256-point complex FFT. The FFT is well-suited for real-time spectrum analysis in instrumentation and measurement applications. The FFT butterfly processor reported here consists of one parallel-parallel multiplier and two adders. It is capable of computing one butterfly computation every 100 ns thus it can compute a 256-point complex FFT in 102.4 μs excluding data input and output processes

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Instrumentation and Measurement, IEEE Transactions on  (Volume:47 ,  Issue: 1 )