AnsweredAssumed Answered

vrf Using Virtual Source generate FM

Question asked by VRFuser on Nov 29, 2007
"TAN, INN TIAN <> wrote:
> Hi All,

> How do I use 2 Function Generator (Virtual Source) to generate the FM
> modulation?

You use the Virtual Source as a carrier signal then post-modulate it using mixers, phase shifters, splitters, whatever you want.
( thses are easy enough to build using formulas )

Or you just generate the signal directly from a formula by feeding a time ramp into whatever math defines your modulation


t- time ramp
a(t) - your modulation signal
w(t) - your carrier

fed into   cos( a(t)*w(t)*t )

gives an ideal modulation

You'll likely find good examples in the VRF archives


Stan Bischof  Agilent Technologies  707-577-3994

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