"TAN, INN TIAN <inn-tian_tan@utssb.com> 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
e.g.
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
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Stan Bischof Agilent Technologies 707-577-3994 stan_bischof@agilent.com
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> 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
e.g.
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
--------------------------------------------------------------------------
Stan Bischof Agilent Technologies 707-577-3994 stan_bischof@agilent.com
--------------------------------------------------------------------------
---
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How do I use 2 Function Generator (Virtual Source) to generate the FM modulation?
Pls advise.
Rgds,
Tan
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