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Polyphase modulation using a FPGA for high-speed applications

Posted: 26 Jan 2009 ?? ?Print Version ?Bookmark and Share

Keywords:FPGA? modulation polyphase?

This application note reviews and analyzes a polyphase modulation scheme that generates high-frequency intermediate frequency (IF) carrier signals in digital IF modems using an Altera FPGA. Modulating IF signals to higher carrier frequencies takes full advantage of the high sampling rate of modern digital-to-analog converters and eases the requirement for analog voltage-controlled oscillators (VCO) and mixers.

This application note presents a mathematical model of the polyphase system which provides insights into system parameter selections. In particular, this application note discusses the polyphase filter design.

View the PDF document for more information.





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