EXPERIMENTAL EM / Radio / Microwave Lens
This work is based on the meta-material microwave lens work done by others.
A repeating pattern of small S-and-2 shapes, in the ratios [ x : y : z ] of [ (2y / 3) : y : (y / 2) ] arranged in LAYERS, each separated by a GAP, from which a parabolic or similar segment is CUT-OUT is known to focus radio waves and microwaves experimentally.
This example meta-material was designed to fit INSIDE a wave-guide for S-Band microwave signals, BUT you can stick as many of these REPEATING elements together to get one as large as you want.
Provided are TWO models;
- A LAYER of meta-material.
- A FRAMING plate, to be placed above and below the layers to secure them.
The default is SIX(6) layers and is sized to fit into a WR-340 S-Band waveguide, as one might create for a microwave oven.
The elements can, of course, be stacked as high and as deep as you want, as the elements consist of repeating patterns..
As provided, the material will appear TRANSPARENT to electromagnetic waves (EM).
To focus the signals, the material MUST have a PARABOLIC profile cut from it, from the INPUT side.
You can do this with hand-tools on the layers in order.
Read up on this subject for more details of the shapes to cut.
If you've got this far, I'm sure you'll be able to proceed.
Basically, the process is;
- Leave ONE(1) layer untouched.
- Cut remaining layers as per your 'lens' shape.
- Spray layers with electrically-conductive material.
- Assemble into non-conductive frame.
- Mount in application.
It is possible one may be able to make one's own radio telescope, or somesuch for a microwave oven, this way....
Heck, it's a LENS for EM radiation... I'm pretty sure you can think of a use for it!
Fine as possible to get CRISP prints of LAYERS.
The FRAME elements should be NON-CONDUCTING material.
The LAYER elements should be post-production painted with an ELECTRICALLY_CONDUCTIVE material, typically metallized spray paint.
The Process of Making an EM Lens from Meta-Material.
- Print TWO(2) of the FRAMING panels.
- Print SIX(6) of the meta-material LAYERS, from PLA or similar.
- Leave ONE(1) alone.... that's the BACK of the lens, the output side.
- Shape the other layers as appropriate. This is your job.
- SPRAY paint the LAYERS with conductive paint, preferably metallic, to make them electrically conductive.
- Assemble the layers in the frame.
Designed over a weekend based on designs freely available on the Web, based on advanced physics research.