[SI-LIST] Re: CPW in HFSS, ask for help
- From: Bi Han <mike_bihan@xxxxxxxxxxxx>
- To: Chandrasekhar Arun <achandra@xxxxxxx>
- Date: Tue, 11 Feb 2003 17:30:33 +0800 (CST)
Nice to hear reply from you !
Actually, what I am wondering is that the "wave port" 's size is somewhat hard
to match two important criterion in the same time:
1. The port need to be large enough to reduce edge-effect.( >3(2g+w)
recommended)
2. port's left & right edges need to contact the two side- grounds to let them
be connected together, to form the "lateral ground".
However, it is tough to meet above two requirements sometimes. For instance,
since the lateral metal trace have limited width, it is very possible that the
port had to be so wide (that all three metal traces are included in the port)
to meet requirement 1. Then, the edge of port will bot contact lateral grounds.
These two side-grounds are seperated eletrically.
How to resolve this issue?
Thanks!
Bihan @ Sjtu,Emlab
Chandrasekhar Arun <achandra@xxxxxxx> wrote:
Hello Bi Han, Pls see a ppt file in the attachment that I used for this
purpose. If you stilll have questions, pls get back to me and we can discuss. I
have not tried the lumped gap source (I use only wave ports), but if u have
some interesting comparison, it would be nice to have a look at.Regards Arun
Chandrasekhar PhD Student: RF Packaging IMEC | MCP/MaRS Group Phone: +32 16
28 82 28 Fax: +32 16 28 10 97 Email: achandra@xxxxxxx IMEC, Kapeldreef 75,
3001 Leuven, Belgium | Phone:+32 16 28 12 11 Fax:+32 16 22 94 00 |
Website:www.imec.be
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Message-----
From: Bi Han [mailto:mike_bihan@xxxxxxxxxxxx]
Sent: Monday, February 10, 2003 13:47
To: Chandrasekhar Arun
Subject: CPW in HFSS, ask for help
Hi:
May I ask you a question about cpw in hfss?
Currently, I want to research some problem related to On-Si-chip CPW(coplanar
wave guide) problem. But have some difficulty in port setup in HFSS and some
other things.
My issue is that how to define those two side grounds of CPW ?
Since they(side grounds) are seperated by the signal line and will not have
opportunity to contact each other, how to define they two to be grounds in the
same time?
Do you have some example project to help me?
Thanks!
B.H.
Bi,Hai
SJTU, Emlab
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