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Jul 17^th, 2024, 4:24am

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How to simulate circuit with my own inductors? (Read 7725 times)

zhangjerome Community Member Offline Posts: 42	How to simulate circuit with my own inductors? Jan 16^th, 2007, 7:32pm Now I have the S parameters of my own inductors. I want to simulate a circuit with these inductors as matching elements. So how to incorporate these inductors with other circuit component in Spectre? Thanks.
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Ken Kundert Global Moderator Offline Posts: 2386 Silicon Valley	Re: How to simulate circuit with my own inductors? Reply #1 - Jan 16^th, 2007, 10:27pm See http://www.designers-guide.org/Forum/YaBB.pl?num=1168526769/3. -Ken
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zhangjerome Community Member Offline Posts: 42	Re: How to simulate circuit with my own inductors? Reply #2 - Jan 17^th, 2007, 6:04am Thank you, Ken~~
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zhangjerome

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Re: How to simulate circuit with my own inductors?
Reply #3 - Jan 17^th, 2007, 4:51pm

Here are some other questions.

1)How to translate the S parameters into a physically equivalent �circuit? I will use the Pi model for the inductor. How to get the component parameters to describe the inductors?Any references related to this issue?

2)Can circuit simulator derive the inductor's DC characteristics from S parameters? I use this inductor as a degeneration element, so the DC operating point is influenced by the inductor.

3) How to simulate a netlist with Spectre? Just netlist, without schematic.

Thanks~~~

« Last Edit: Jan 17^th, 2007, 7:19pm by zhangjerome »

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OldHouseBlues New Member Offline Posts: 4 Massachusetts, USA, Earth	Re: How to simulate circuit with my own inductors? Reply #4 - Jan 17^th, 2007, 7:21pm Looks like Sigrity may offer a tool for your item 1), Broadband SPICE, http://www.sigrity.com/products/bds/bds.htm
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zhangjerome Community Member Offline Posts: 42	Re: How to simulate circuit with my own inductors? Reply #5 - Jan 18^th, 2007, 2:49am OldHouseBlues wrote on Jan 17^th, 2007, 7:21pm: Looks like Sigrity may offer a tool for your item 1), Broadband SPICE, http://www.sigrity.com/products/bds/bds.htm Does Spectre provide such tools?? Thank you ~~~
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Geoffrey_Coram

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Re: How to simulate circuit with my own inductors?
Reply #6 - Jan 18^th, 2007, 4:18am

zhangjerome wrote on Jan 17^th, 2007, 4:51pm:

2)Can circuit simulator derive the inductor's DC characteristics from S parameters? I use this inductor as a degeneration element, so the DC operating point is influenced by the inductor.

Depending on the frequency range of your S parameter data, you may or may not get an accurate answer for dc ...

Quote:

3) How to simulate a netlist with Spectre? Just netlist, without schematic.

Make sure spectre is in your path and just call it with the netlist as the argument.

If at first you do succeed, STOP, raise your standards, and stop wasting your time.

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OldHouseBlues

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Re: How to simulate circuit with my own inductors?
Reply #7 - Jan 18^th, 2007, 6:06am

zhangjerome wrote on Jan 18^th, 2007, 2:49am:

OldHouseBlues wrote on Jan 17^th, 2007, 7:21pm:

Looks like Sigrity may offer a tool for your item 1),

Broadband SPICE, http://www.sigrity.com/products/bds/bds.htm

Does Spectre provide such tools??

Thank you ~~~

My brief search of the documentation leads me to say "no". Perhaps you can
find time to perform a thorough search and/or wait for an authoritative reply
from more senior members of this community.

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sheldon Community Fellow Offline Posts: 751	Re: How to simulate circuit with my own inductors? Reply #8 - Jan 18^th, 2007, 8:10am Zhang, You can use Model Trainer in VPCM to generate an equivalent circuit for your inductor from s-parameter data, assuming the data is in Touchstone format. However, why don't you just use the n-port, that is why it is there? Best Regards, Sheldon
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zhangjerome Community Member Offline Posts: 42	Re: How to simulate circuit with my own inductors? Reply #9 - Jan 18^th, 2007, 4:26pm Sheldon: I have no ided about whether or not the S parameters can give a accurate representation about DC characteristics. With a equivalent circuit, maybe it's more clear how the inductor will influence the circuit's operating point. I am just trying different ways. Regards Jerome Zhang
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