The Designer's Guide Community Forum

The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl
Simulators >> Circuit Simulators >> Separate real and imag part of complex signal in AC analysis
https://designers-guide.org/forum/YaBB.pl?num=1249477621

Message started by Aspwy on Aug 5^th, 2009, 6:07am

Title: Separate real and imag part of complex signal in AC analysis
Post by Aspwy on Aug 5^th, 2009, 6:07am

Dear all,

is it possible to separate real and imaginary part during AC analysis in Cadence Spectre or Mentor Eldo (or SPICE3)?

Any help is appreciated.

Thanks,
aspwy

Title: Re: Separate real and imag part of complex signal in AC analysis
Post by thechopper on Aug 5^th, 2009, 5:21pm

Hi,

In the ADE calculator you have both"real" and "imag" functions for such purpose.

Regards
Tosei

Title: Re: Separate real and imag part of complex signal in AC analysis
Post by Aspwy on Aug 6^th, 2009, 12:30am

Tosei,

thanks for your reply, but ADE calculator is not available _during_ AC simulation.

Kind regards,
aspwy

Title: Re: Separate real and imag part of complex signal in AC analysis
Post by thechopper on Aug 6^th, 2009, 7:21pm

Hi aspwy,

I use the calculator from ADE all the time after I run an AC simulation (or any other non-periodic analysis).
I think you might have something wrongly configured.

Regards
Tosei

Title: Re: Separate real and imag part of complex signal in AC analysis
Post by Aspwy on Aug 7^th, 2009, 12:45am

:)

Please note that _during_ is not equal to _after_. I have no difficulties extracting real and imaginary part of complex signal _after_ the AC simulation. Unfortunately, I would like to do so _during_ the AC simulation (to use it for behavioral modeling).

Thanks,
aspwy

Title: Re: Separate real and imag part of complex signal in AC analysis
Post by Peruzzi on Aug 7^th, 2009, 7:33am

Just a guess, but maybe using a transient analysis with a frequency swept sine source will allow you to do what you want.