|a small patch of PCB, about 2*2 cm will be sufficient if the antenna is
|designed on the PCB as part of the layout. The centre of the spiral can be
|connected on the otherb conductor side of the PCB, but only a small line,
|NOT a groundplane (This would help your problem all right, because ALL
|transmitting would be next to Zero...).

What about having two spirals on opposite sides of the board,
connected in the middle (being sure to run the spirals in
opposite directions (so that if, e.g., current starting at the
top outside goes clockwise into the center, and then on the
bottom goes clockwise as well from the center out).  Hard to
describe, but one way would work (I think) and the other would
not work well at all.

Is that a good approach?


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