> In this case you might be able to use a plain old 1/2 wave center
> fed dipole.  At 434MHz a 1/2 wavelength is about 13.6 inches,
> and you usually want just a little less than 1/2 wavelength anyway.
>  A circuit board something like a 12 inch school ruler with the
> dipole along one edge and the electronics in a glob in the middle
> should work well enough.  This should fit easily vertically on the
> performers' backs

Hi Olin. You've collided two threads. David Duffy was asking about
communicating with performer's lights. My thread is about the design
of compact aerials

Since you mention a dipole, there's an example here (page 11)

http://www.rfm.com/corp/appdata/antenna.pdf  (106kB)

of a PCB trace 'folded dipole' for 434MHz. In that form it's too
long for the case I'd like to use, which is unfortunate because the
author says it has very good performance. Perhaps it can be re-
arranged to be wider and shorter to suit a small case. For example
can the top half be rotated through 180 to be next to the lower
half and still perform ? Where he notes 'feedpoint', does he mean
that the signal is connected to just the lower trace end ? I'm guessing
he does otherwise the two traces would be shown joined

Joe

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