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News Release from: RF Engines | Subject: Ventrix Polyphase DFT cores
Edited by the Electronicstalk Editorial
Team on 23 May 2003
Polyphase DFT cores ready for FPGA use
RF Engines has added high-speed polyphase DFT (discrete Fourier transform) cores to its extensive range of digital signal processing technologies.
RF Engines has added high-speed polyphase DFT (discrete Fourier transform) cores to its extensive range of digital signal processing technologies These are the world's first polyphase DFT cores to be available as standard licensable IP that are fully characterised and ready to use off the shelf
This article was originally published on Electronicstalk on 21 Sep 2001 at 8.00am (UK)
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The number of polyphase taps can be optimised to match the required filter performance, and this is particularly beneficial for systems that require high dynamic ranges, good filter selectivity, precise amplitude accuracy or a combination of these features.
Examples of applications for the Ventrix designs, include wide-band filter banks, communications systems, electronic warfare covering radar, sonar and surveillance, medical instruments, real-time spectral analysis, and multichannel systems, where many low-speed channels are interleaved through the high-speed core.
RF Engines' polyphase DFT solution is a highly optimised pipelined polyphase core incorporating its high performance pipeline FFT core.
The design is highly parameterisable by RF Engines to allow an optimal solution for the application.
Versions from eight points to over one million points, are available.
Custom filter design techniques allow RF Engines to design very high specification filters of almost any length for use within the polyphase DFT.
Critically sampled, twice oversampled and n times oversampled versions are available.
The 10bit, three-tap, twice-oversampled 16Kpoint version fits in a single Xilinx XC2V3000.
Architectural designs have shown that a real-time one million point, five-tap, 14bit, 20MHz complex datarate, version fits in a single XC2V6000 and three external SDRAMs.
John Summers, RFEL's VP of Sales and Business Development, commented: "This latest Ventrix range of polyphase DFTs are an important addition to our range of DSP architectures.
Customers come to us with a DSP design challenge and we select the most appropriate solution from our range of PFT, Tuneable PFT, FFT and now polyphase DFTs that exactly meets their requirements of filter characteristics and performance.
Polyphase DFT has been around for a while but we believe that we are the first to package it as a commercial piece of IP that is fully tested and characterised".
Detailed information on the Ventrix range of polyphase DFT cores can be found on the company's website.
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