[SI-LIST] Re: Can Somone explain port definition for HFSS (For be ginner)

Steve:

My answer will focus on a port definition to model a port with a certain 
impedance value in the Ansoft HFSS version 8.

Ports can be defined as a "Lumped Gap Port".  The port impedance is 
defined by the user.

For example, you can create a 50 ohm port by this Lumped Gap Port to 
model 50 ohm cables and probes in your Network Analyzer measurement.  
This requires a impedance and calibration line definition between the 
ground plane (of test board or fixture) and the conductor or probe pad. 


As I know, Ansoft on-line support could provide you some application 
notes on this problem.  Try their web site: www.ansoft.com

I hope this helps you.

-Seol

-----Original Message-----
>From: Steve Rogers [mailto:SRogers@xxxxxxxxxxxxx]
>Sent: Thursday, September 27, 2001 10:28 AM
>To: si-list@xxxxxxxxxxxxx
>Subject: [SI-LIST] Can Somone explain port definition for HFSS (For
>beginner)
>
>
>
>I have just got a copy of HFSS for evaluation. Things are fine unitil I 
get
>to the defining the ports bit, then the confusion sets in. All I want 
to do
>is mimick connecting voltage sources of certain impedance to 
conductors, or
>connecting a network analyser to these conductors. The sort of things I 
will
>be looking at initially are simple things like a wire over ground, 
parallel
>wires etc etc (only because I know what the answers should be). I can 
get
>clever later (maybe if I havent given up). Anyway, can anyone explain 
in
>simple speak for the layman who normally uses test equipment not 
simulators,
>how to set these port things up. More importantly some idea of what 
should
>be used and why would be nice (there seem to be a vast selection of 
methods
>to connect up to the conductors).
>
>All help and suggestions welcome
>
>
>
>Steve (Confused new user)
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