What is the difference between SONNET and Momentum?

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harkonnen

Joined: 14 Apr 2002
Posts: 72

18 Jun 2003 17:01 sonnet momentum

Can anyone explain what the difference is between Sonnet and Momentum. Is there any reason I would switch from Sonnet to Momentum?

From reading the documentation it seems that Momentum can simulate well at low frequencies, even down to DC. Sonnet has problems with low frequ. and cannot sim DC.

I like to go down to DC because I enter the S-Parameter-Block in a Harmonic Balance simulation where the DC point is necessary and sometimes it even needs to be accurate loss.

regards,
harkonnen

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junction_crosstalk

Joined: 03 Dec 2002
Posts: 24

20 Jun 2003 12:41

I don't think you can simulate down to DC with Momentum. You can do that with Momentum RF which based on quasi static.

JC

harkonnen

Joined: 14 Apr 2002
Posts: 72

21 Jun 2003 3:44

junction_crosstalk wrote:

I don't think you can simulate down to DC with Momentum. You can do that with Momentum RF which based on quasi static.

I heard that when simulating broadboand from very low to high frequencies the simulator automatically switches between Momentum and Momentum RF and interpolates the results.
I wonder if that is true and if yes, does it works well?