5 GHz Helix antenna
Description
5GHz helix antenna. Can be printed using "Vase mode" 0.28 mm layer, 0.8 mm line. Use included .scad file to switch polarity, adjust length - or diameter, if you'd like to print a helix for a different frequency. Fully customizable! Drill a small hole at the top and stick the wire inside to finish and prevent from unwinding. Glue the base to a piece of copper laminate, run a quarterwave segment of wire parallel to the ground to provide matching to 50 Ohm. Use antenna analyzer to check for impedance and reflected wave before transmitting. Sample usage: https://twitter.com/Sq3Swf/status/1314298124375072781
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