This is something I may find useful.  In the past, I made swiggly inductors as library 
components.

Sorta like a continuous 'S', I found them useful as power chokes.


_____________
Brian Guralnick



----- Original Message ----- 
From: "Brad Velander" <[EMAIL PROTECTED]>
To: "'Protel EDA Forum'" <[EMAIL PROTECTED]>
Sent: Tuesday, June 12, 2001 7:16 PM
Subject: Re: [PEDA] Spiral trace construction?


| Bill,
| for anything even close to that, we draw or implement those in
| AutoCAD or our RF simulation tools. Then we import (usually through Gerber,
| possibly DXF import) into the PCB database. I haven't heard nor know of any
| better manner to implement it in Protel.
| For a continuous spiral I would not even have high hopes of using
| these methods because I don't believe that Protel would have any means of
| interpreting this structure into it's own database structure. Fortunately I
| have never had to find out yet, the closest our engineers have come to
| making me try this is a rectangular spiral (simple as straight lines).
| 
| Brad Velander,
| Lead PCB Designer,
| Norsat International Inc.,
| #300 - 4401 Still Creek Dr.,
| Burnaby, B.C., V5C 6G9.
| Tel. (604) 292-9089 direct
| Fax (604) 292-9010
| website www.norsat.com
| 
| 
| > -----Original Message-----
| > From: Brooks,Bill [mailto:[EMAIL PROTECTED]]
| > Sent: Tuesday, June 12, 2001 4:02 PM
| > To: 'Protel EDA Forum'
| > Subject: [PEDA] Spiral trace construction?
| > 
| > 
| > Has anyone that works with RF and Protel ever had to make a spiral
| > conductor? Is there a server or some such thing that makes 
| > one for you by
| > defining the trace width and spacing etc... ? it should start 
| > at a center
| > point and spiral out at a given rate with a given tracewitdh, etc... 
| > 
| > Bill Brooks 
| > PCB Design Engineer 
| > DATRON WORLD COMMUNICATIONS INC.
| > 3030 Enterprise Court 
| > Vista, CA 92083 
| > Tel: (760)597-1500 Ext 3772 Fax: (760)597-1510 
| > mailto:[EMAIL PROTECTED] 
| > IPC Designers Council, San Diego Chapter 
| > http://www.ipc.org/SanDiego/
| > http://home.fda.net/bbrooks/pca/pca.htm
| 
| 

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