Hi, does anyone have a simple circuit for MSK modulation? I want to model it in spice and a looking for a design using the least amount of components.

 

Hello,

It looks like it is switching two frequencies at the zero crossings.
I had to look it up as the naming "MSK modulation" did not ring a bell:
https://en.wikipedia.org/wiki/Minimum-shift_keying
http://www.radio-electronics.com/info/rf-technology-design/pm-phase-modulation/what-is-msk-minimum-shift-keying-tutorial.php

Bertus

 

Hi, thanks. Any idea how this can be implemented on circuit level with hardware using a volt controlled oscillator? Most circuits I found are fully integrated chips, I am looking for a simple circuit solution.