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What is Strobed Periodic Noise simulation in SpectreRF

RFStuff

 Dear All,

 In SpectreRF documents I have come across "Strobed Periodic Noise simulation in SpectreRF" for Synchronous Jitter measurement.

But in Pnoise analysis I have not seen Strobed option.

So what is Strobed Periodic Noise simulation in SpectreRF ?

Kind Regards,

Parents
    1. It spreads the 4 timepoints evenly over the period. 
    2. With an ideal sampler when using pmjitter or tdnoise, all noise gets folded into the 0th harmonic. So you might as well use that. It actually doesn't really matter which you pick, because they'll all end up being copies of each other - but I'd pick the 0th. With the "modulated" PM analysis, you're simulating two pnoise sweeps, one above and one below the carrier and then it combines the results smartly to give you the PM and AM components - so it has to be done around the 1st harmonic.

     

Reply
    1. It spreads the 4 timepoints evenly over the period. 
    2. With an ideal sampler when using pmjitter or tdnoise, all noise gets folded into the 0th harmonic. So you might as well use that. It actually doesn't really matter which you pick, because they'll all end up being copies of each other - but I'd pick the 0th. With the "modulated" PM analysis, you're simulating two pnoise sweeps, one above and one below the carrier and then it combines the results smartly to give you the PM and AM components - so it has to be done around the 1st harmonic.

     

Children
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