Plastics sandwich telecommunication parabolic reflector - has integral deicing heating element laid on honeycomb structure

摘要

A parabolic reflector is esp. for telecommunication use in areas where serious icing can occur. The aerial is made up a sandwich, consisting of a forward 0.1mm cast pulverised metal surface (1) hardened over a cold mould surface. The metal surface is laid over a 1.5mm stratified glass - resin polyester (2) and carries on its rear surface a de-icing nickle-chrome heating wire (3) laid in an evenly spaced zig-zag. The main thickness of the aerial consists of a very low thermal conductivity honey-comb (4) sandwiched between two further glass resin layers (5, 9).