On Tuesday, April 10, 2018 at 2:42:50 AM UTC-4, Trevor Wilson wrote:
Here's a question that stumped me back in the old slide rule days:
A coaxial cable, having an inner diameter of 0.0254mm (0.001") and using
an insulator with a dielectric constant of 2.56, is yo have a
characteristic impedance of 2,000 Ohms. What must be the outer conductor
diameter?
You guys can locate the appropriate method of calculation.
--
Trevor Wilson
www.rageaudio.com.au
It's pretty hard to get impedances above that of free space.
(377 ohms) An air gap would be better.