Radio Lenses really are A Thing. This is a quick video about machining a Dielectric Lens based on OpenEMS simulations of a Rexolite 1422 cross-linked polystyrene lens for a 10 GHz microwave antenna on my Colchester lathe. The lens fits into a round waveguide body and helps form the wave-fronts coming out of the guide to focus them at the right angle to illuminate an offset parabolic dish. This is pure machining, a bit of a teaser for an upcoming video series on dielspike lenses. The original version with the different geometry and no truncated tip is at http://www.g4dbn.uk/?p=1644

The original lens was designed and modelled by Willi HB9PZK to suit the POTY dual-band 2.4/10 GHz CP patch/horn antenna https://forum.batc.org.uk/viewtopic.p...

I'm using it in a larger waveguide tube to improve the match a little, and made small changes to the rest of the geometry for feeding a 1.4 metre prime focus dish/

Stars png from pngtree.com https://pngtree.com/so/Stars

Chapters:
00:00 intro
02:24 outro