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From: "Marc H.Popek"
Subject: Re: Chip antennas
X-Newsreader: Microsoft Outlook Express 5.50.4133.2400
Date: Mon, 09 Dec 2002 16:50:43 GMT
NNTP-Posting-Date: Mon, 09 Dec 2002 16:50:43 GMT
Organization: AT&T Worldnet
I have looked into antenna design and specifications recently...
These finger nail sized, dielectrically loaded "chip antennas" require a
continuous ground plane area specified for each frequency... IN other words
instead of having a wavelength sized antenna, you have this 1/100 wave
"antenna" coupled to a 1/4 by 1/2 wavelength ground plane, which can act as
an antenna mirror ground.
In general you can provide better radiation performance using embedded real
There is a compromise between a whip antenna and the chip antenna that will
be available on the market soon. It's called FWT antenna technology.
basically it is a dielectrically loaded 3 dimensional antenna that offers
1/2 wave dipole performance in 1/8 of the volume traditionally required.
"Phil Allison" wrote in message
> "James Meyer" wrote in message
> > On Sat, 7 Dec 2002 09:28:11 +1100, "Phil Allison"
> > >
> > >"James Meyer" wrote in message
> Read the item again - what performance characteristic is the
> > >context?
> > >
> > >
> And finally...
> > "provide performance equivalent to that of a whip antenna."
> > So it's a compact antenna that works as well as a whip.
> ** I can only tell you what to look at - I cannot make you do it.
> If you take statements out of their context (like you seem hell
> bent on) then it changes their meaning.
> What was the context just before the " provide ....." ??
> Remember the whole blurb was likely written in Japanese and then
> ................ Phil
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