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Altera_Forum
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12 years ago

Using VHDL to generate 20Mhz sine wave and visualizing with a 10bit DAC

Hi all. I want to generate a 20MHz sine wave in VHDL but have no clue of how to do it. Also, with a device like EP3C10E144C8N, is it possible to achieve that frequency? Also, I intend to use 10-bit o...
Altera_Forum's avatar
Altera_Forum
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12 years ago

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Wow, that sounds pretty neat and clever. If I am about to opt for quadrature modulation, is using square wave and low-pass filter still a valid option?

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QAM normally requires clean sine wave. A filtered approach will not produce a clean tone. A rectangular pulse has wide band that will not be filtered clean into a tone. You will need proper nco for that purpose.