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 Digital generation of PWM signals in FPGAs using adders rather than counters
Seminar Information

Speaker: walkerg

When: 1:00PM Thursday 4th March 2004

Venue: GPSouth 78-344

Abstract:

Pulse Width Modulation (PWM) waveforms are generally created digitally using a binary counter followed by a digital comparator. I'll show an alternative method of generating these PWM waveforms using an adder and comparator or just an adder alone. Advantages include - the ease of generating different phase shifted PWM waveforms and - more precisely defined frequency with lower clock freqs - greater resolution with lower clocks. I'll show some spectral results from Matlab.

Contact: Dr Peter Sutton