Elektor Team
About the article

Wideband Waveform Generator

Based on a Labs project | October 2011 | Find it here
This circuit is designed to provide a wideband digital sine wave signal source. Its main feature is that because it synthesises the signal in 32 steps, no low-pass filter is required to suppress the odd harmonics. A well-known method for synthesising a sine wave under control of an input frequency is to apply a low-pass filter to a square wave of the same frequency. Along with the fundamental, this includes odd harmonics. After filtering out these parts of the signal we are left with a clean sine wave at the desired frequency. Unfortunately, the corner frequency of the lowpass filter limits the usable range of frequencies.
Downloading of this magazine article is reserved for registered users only.
Login | Register now!
Loading comments...