On 8/24/2016 2:50 PM, Richard Fry wrote:
Rick C (rickman) clips:

I do not agree that your explanation holds water at all. The loopstick
antenna will respond to a vertically polarized EM wave maximally when
horizontal. That says nothing about whether it is responding to the E
field or the H field.

RESPONSE: Actually it does, because the maximum H field of a vertically-polarized, far-field, e-m wave always lies in the horizontal plane. So if the maximum r-f output of a loopstick receive antenna occurs when its axis lies in the horizontal plane, that output necessarily was produced by the H field.

The part you are missing is that you have no basis to assume the antenna
responds in any particular way to the E field or the H field. You
*assume* that a horizontal loop stick antenna is responding to the H
field because the ferrite is horizontal. How do you know which
orientation of the antenna makes it sensitive to which field?


To determine that you need to generate a calibrated E field without the
H field (or very low) and an H field with small E field (obviously only
possible in the near field) and compare the results.

RESPONSE: This was an assumption made by the developers of the E-H and Cross-field antennas --which was disproven in their field trials, as well as by theory. Neither the E field or the H field component of a far-field e-m wave can be produced or radiated independently. If one field exists, they both exist, and are related to the radiated power by the 377-ohm impedance of free space.

The E and H fields are always present in the far field. Not so in the
near field where one can dominate over the other.

You have a weird way of replying to a post.


--

Rick C