[sdiy] RCA theremin antenna shape

[Paul Perry]

At 08:51 AM 27/01/02 -0800, John L Marshall wrote:

>which should work well. But then, the antennas are so short relative to the
>frequency, I suspect that they are near perfect isotropic radiators.
>
I certainly agree. But, if you take a coil, and extend a loop out, and
squash the loop so it has very little cross sectional area, with the current
running parallel and in opposite directions in the 2 sides, there is not
going to be much radiation from it at all. Which is exactly what you want.
And as for putting magnetic material in it.. I wish I could borrow a RCA
theremin so I could stick a ferrite rod in there, I bet it would have some
effect ;D

OK lets build a microwave stripline ribbon controller!

paul perry melb aust