For spirals you could try Brians script as well for drafting after doin
'what ifs' in the other application.

http://www.proteluser.com/bbs/showthread.php?t=17

John 

> -----Original Message-----
> From: matt [mailto:[EMAIL PROTECTED] 
> Sent: Sunday, March 28, 2004 10:18 PM
> To: Protel EDA Forum
> Subject: Re: [PEDA] Antenna coil
> 
> you may try to design  a spiral inductor instead . Download 
> the free software called Appcad (from Agilent) , it has 
> spiral inductors design. Play some what if scenarios with it 
> and you'll see if you can do it one way or another, with and 
> without vias .
> 
> Best Regards,
> Matt Tudor , MSEE
> 
> ----- Original Message -----
> From: "John C. Echols" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Sunday, March 28, 2004 3:32 PM
> Subject: [PEDA] Antenna coil
> 
> 
> > I'm the guy still using Protel 1.61 (1992) with Windows 
> 3.11 and I'm 
> > on a phone line....now that you're through laughing my 
> question is - 
> > my present project requires a coil for an antenna for a "prox" card 
> > reader.  The coil is about 3.25 X 4.25", 700uHy and takes 
> 60 turns of 
> > mag wire.  Can I do this with traces? The easiest would be 
> 30 turns on 
> > one side and one via to do 30 on the back.  I'd probably go 
> .004/.004"
> > so it's not too hard for the board house and would only 
> take .24 width 
> > of board space.  Will this work or is the spacing too big?  Or do I 
> > need to do one turn on top, the next on bottom, next on 
> top, etc?  All 
> > the vias would take up too much room.
> >
> > Thanks for the help.
> >
> > John Echols
> >
> >
> >
> 
> 
> 



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