3D Simulations for Signal Integrity
3D Simulations for Signal Integrity
3D Simulations for Signal Integrity
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Basics to consider<br />
� Through g Nyquist yq sampling, p g, we know that to capture p a<br />
time step of Ts, we need to obtain frequency domain<br />
in<strong>for</strong>mation up to:<br />
F<br />
max<br />
1<br />
=<br />
2×<br />
t<br />
�� For a time domain wave<strong>for</strong>m with a risetime of 40 ps ps, in<br />
order to capture the ringing in the time domain, we would<br />
want to capture at least 4 samples during this risetime<br />
� This implies a sampling time of 10 ps<br />
� According to the above equation, we need data from<br />
HFSS up to 50 GHz<br />
s
Change language