[MLB-WIRELESS] Antenna design idea, probably not new.

[Roger Venning]

Matt, Mike,

the fiberglass in normal PCB has large dielectric losses. To make 
microstrip antenna you need microstrip board, which is like double 
sided PCB except that the dielectric doesn't eat all your signal as it 
propagates along the lines. For more information see 
http://www.google.com/search?hl=en&q=microstrip+antenna+fiberglass+%
22dielectric+losses%22, particularly the first page (you'll need to 
view cached because even though it is excellent quality it is no longer 
online).

Roger.

----- Original Message -----
From: Matthew.C.Boyd at uts.edu.au
Date: Friday, April 12, 2002 8:27 am
Subject: Re: [MLB-WIRELESS] Antenna design idea, probably not new.

> Mike,
> I thought this might be an issue. Out of curiosity, what was the 
> brand / 
> make of PCB you used. Maybe  it would be possible to find some 
> non-absorbing PCB?
> 
> Could you send me a copy of the design you used anyway? (.ps or 
> gif or 
> something with an attached scale so I can check the scale when I 
> print it out).
> 
> Thanks
> Matt
> 
> At 04:14 PM 11/04/02 +0800, Mike Nye wrote:
> >Hi Matthew,
> >
> >I tried this a few months ago, and the fibreglass PCB absorbed 
> HEAPS of 
> >the RF energy. It worked like crap. :)
> >
> >-Mike
> >
> >At 09:10 AM 11/04/2002 +1000, you wrote:
> >>Matthew.C.Boyd at uts.edu.au
> >
> >
> 
> 
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