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DFT using cadence spectre

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Ata_sa16

Ata_sa16

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Hi guys,

I am not familiar with DFT of calculator in cadence spectre.

The problem is in frequency domain i observe very low resolution and steps are 200Mhz !

how can i increase resolution ???

dft.png

I have a 2.5 Ghz signal and i cannot observe it ! and neither other tones !!!
 

You just need to sample the signal from to to to+Nfft*Ts.
to = initial stabilization time
Nfft=point used for DFT measurement. It should be a power of 2.
Ts= The sampling rate of your system.
 

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