antenna-theory.com

[simonthepimon]

Hello, I am an artist that is working on developing the technique of wireless illumination. Commercially this is used in plasma lamps, but they use microwaves and waveguides for very high energy focused output from a single ballast. I am looking to create as broad a 2D area as possible from a less powerful 7kv/35kHz single lead.

I have experimented with a few variations. I have soldered the lead to a square sheet of copper, I have made a grid of soldered copper wires, I have also designed a sort of tree shape to expand coverage because I was unsure of all the short circuits in the grid shape. I am considering trying a spiral also.

The illuminating field is limited to about an inch away from the conductor. Because the field is about an inch away, I have found that I need to have copper material spread out to bring the field to the entire area. This is ok but there are "dead" spots.

I am interested to hear if anyone has suggestions for the basic shape that I should create. Thanks.

[bigSteve]

Do you have any pictures of your setup and initial patterns?

[simonthepimon]

I can send a picture but I don't know how to post it. Its very rudimentary. Basically just 12ga solid copper wire cut into 14" pieces and laid out in an 8 x 8 grid. Other attempts have been the same wire laid out with 8 columns and 1 row connecting the other 8 wires, with the lead from the circuit board soldered into the middle.

A little more background perhaps, the circuit is generated from solid state circuit board with a lead wire/antenna coming off of it. This is sold to power small neon displays but because of its high voltage/frequency can power small neon displays without having electrodes. It takes a small DC input and outputs through a 5" piece of GTO wire. My goal is extend this output antenna over 200 in2 area.

Also, probably important, it is low powered, I think about 30mA.[/img]

[wolberine]

I have no idea what was being described above, but it sounds interesting. Could you link to any references? Provide pictures on a hosting site? I'd like to see this...