A free-space inductor is first cousin to an isotropic antenna and a free-space dipole -- useful theoretical models, but not much use in the ham shack. The "characteristic impedance" of a stripline tr
Yes, BUT -- a conductor in free space and a conductor over lossy earth are rather different from stripline (a conductor over over ground plane, which is assumed to be highly conductive and lossless).
That's why I posted some actual measurements early on in this thread. I couldn't find a model for a inductance of "straight wire over lossy earth". The absolute accuracy of my quick tests probably ar
Indeed.. and I've looked around a lot. The usual "inductance of a single turn loop of an infinitely thin conductor" formula isn't valid for partial turns (that is, 1/4 of a loop doesn't have 1/4 the
And the length is big, relative to the cross section of the conductor. There are some "end effects" (a piece of the wire at the end sees the field only from conductors on one side of it, and a piece
OK.. when you did your fixture cal, what did you use for standards (was it the usual Short,Open, Load cal?). I'm curious, because I want to make similar measurements, and I'm always interested in use