Recently, I was asked to come up with a futuristic, space-ey prop for an upcoming video for the 2017 Hackaday Prize. My custom-built, easily transportable parabolic antenna immediately sprang to mind. The idea of a three-meter diameter parabolic dish was rejected for something that isn't insane, but I did go so far as to do a few more calculations, open up a CAD program and start work on the actual design. As a test, I decided to 3D print a small model of this dish. In creating this model, I inadvertently created the perfect WiFi antenna for an ESP8266 module using nothing but 3D printed parts, a bit of epoxy, and duct tape.
This is an experiment to determine if it's possible to 3D print a parabolic WiFi antenna.
The dish is printed. only thing left to do is add the center mount, metalize the dish, and place the feedhorn.
The diameter of the dish is 49mm, which means the depth of the dish is 6mm. We're dividing everything by two here (units are arbitrary), so the feed horn must be 25mm from the bottom of the dish. This means the feed horn must be 19mm above the 'points' of the dish.