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s-params

Print off some smith chart paper?

Reply to
JM
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Can anyone recommend a program that will turn s-parameters into R-L-C element equivalents?

We use a lot of "RF" parts, in fast time-domain circuits, so s-params aren't much help in simulation. I can eyeball S11 of a fet and guestimate gate capacitance, but that's about as far as I can go.

We like the Avago phemts, because they at least provide some DC curves on their data sheets. Lots of people don't even do that.

Just now, I want to estimate how much the ni input of a current-mode opamp will load my signal source. But the problem recurrs.

--

John Larkin         Highland Technology, Inc 
picosecond timing   laser drivers and controllers 

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com
Reply to
John Larkin

See ...

CreateS-ParameterSubcircuitsForSpice.pdf

on the Simulation Tools & Macros Page of my website. ...Jim Thompson

--
| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
| San Tan Valley, AZ 85142     Skype: skypeanalog  |             | 
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  | 
| E-mail Icon at http://www.analog-innovations.com |    1962     | 
              
I love to cook with wine.     Sometimes I even put it in the food.
Reply to
Jim Thompson

My problem with s-parameters in large signal circuits was that they changed with current.

Jim's web-site doesn't deal with that particular problem.

--
Bill Sloman, Sydney
Reply to
Bill Sloman

Try this:

Reply to
John S

I was looking at that- it would be nice to have a SPICE model of some of the minicircuits components but not for $7K. Someone should moonlight translating models for $50 or $100 a shot or something like that.

Best regards, Spehro Pefhany

--
"it's the network..."                          "The Journey is the reward" 
speff@interlog.com             Info for manufacturers: http://www.trexon.com 
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
Reply to
Spehro Pefhany

Take note, Silly Savage...

ThiS iS an "S" related poSt.

He iS John S

JuSt Sayin' :-)

You Should Settle down, cockfight boy... SheeSh.

Reply to
DecadentLinuxUserNumeroUno

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