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Polyphase Modulation With Aliasing for Data Up-Conversion  

CategoryDesign Example \ Outside Design Store
Name Polyphase Modulation With Aliasing for Data Up-Conversion
DescriptionIn digital up-conversion, baseband signals are interpolated to intermediate frequency (IF), then digitally modulated by IF sinusoidal carriers. According to the Nyquist theory, the IF carrier frequency is limited to half of the IF circuits sampling frequency. This design example demonstrates how to achieve digital up-conversion with IF carrier frequency that is higher than the Nyquist frequency. The key is to exploit the periodicity of sinusoidal signals and the high sampling frequency of the low voltage differential signal (LVDS) serializer that is embedded on Altera® FPGAs. Modulating IF signals to higher carrier frequencies takes full advantage of the high sampling rate of modern digital-to-analog converters (DAC) and eases the requirement for analog voltage-controlled-oscillators (VCO) and mixers.
Operating SystemNone
IP Core
IP CoreHeading
10/100/1G Ethernet MACController (GMAC)Other
FamilyCyclone III
Polyphase Modulation With Aliasing for Data Up-Conversion-
Development KitNon kit specific Cyclone III Design Examples
Quartus Prime VersionDownload Quartus Prime v7.2
Quartus Prime EditionStandard

Last updated on March 2, 2016, 10:18 a.m.