Lexan Horzontal/Vertical Polarization Mount Assembly
Over the years when a composite material is required for one of the projects that I'm building in my shop, one of my favorites that I reach for most times is Lexan.
Lexan (Polycarbonate) can be machined using sheet metal techniques, such as bending on a brake, and even for sharp angle bends with a tight radius, heating may not be necessary.
This makes it valuable in prototyping applications where transparent or electrically non-conductive parts are needed, such as the parts required for the mount of the LPDA shown here, where metal in the path the antenna elements would distort the radiation pattern.
Granted, it is required that a certain amount of metal be introduced to the mix, as how does one hold it together without machine screws!
Still, it is important to keep the metal to a absolute minimum, that is not part of the antenna build itself.
Click on the photo for a closer look.....