It looks like you guys didn't read what I wrote in here and in
Wesley's Kapanadze and other FE discussion forum
I'm not so much available now to respond as I have major Jewish holiday, and that's few days.
short note:
1. you don't much care what is the resistance of the ground however it may help
2. you are not much interested what is the current in the ground, however it may help .
3. The
Goubau line is made not by use of single wire ,but by use of single wire coated with dielectric that creates
interface. and the line between two Tesla coils will work only if you have
interface.3a.depends from frequency it may need the
TAPER as explained here:
http://jpier.org/PIERM/pierm54/04.16120207.pdfCapturing Surface Electromagnetic Energy into a DC through Single-Conductor Transmission Line at Microwave Frequencies
3b. non coated copper wire will work as well , but if it is not coated than role of dielectric is taken by air.
And space between air and wire is called
interface however nobody tends to recognize it this way.
If you use air as dielectric than you have a lot of losses
4. So how it is that for Goubau line you need to have wire that is coated with dielectric?
Answer: first we need to understand what is interface.:
it is space or rather plane or area between two media with different dielectric or conductive properties.
that includes earth that now is named:
LOSSY CONDUCTIVE MEDIUM.( google it)
examples of interface:
1- dielectric and another dielectric with different dielectric properties
such as
teflon and
polyamide one on the top of another. The space between them is your interface.
for your eye there is no space but for EM wave it is.2- dielectric and conductive medium such as copper foil( conductive medium) and air (dielectric)
Because the surface of 1ft wide aluminum foil is better than surface of wire used in Goubau line than we have much less losses if condition needed for energy transmission is met.
example of this interface is here:
https://youtu.be/XOTLfnMOSqQ?t=3693- lossy conductive medium and dielectric such as earth and air.
there are more types of interface and these interfaces works little different at different frequencies.
That means interface will always be the same interface but means of feeding EM wave into the interface and out may be characteristic to given frequency range.
Failures:The failure of your experiments can be caused also by:
1. lack of impedance match.
2. lack of proper polarization AND BREWSTER ANGLE - that is done (at its easiest) by changing elevation of
top capacitor . HV Tesla coil must be vertical to the ground
3. lack of resonance in both the Tx and Rx Tesla coils
4. standing wave is:
stationary wave, is a wave which oscillates in time but whose peak amplitude profile does not move in space.
so you need to free some of its energy and feed it into interface at right Brewster angle.
5. your two coil the Tx and Rx system, between two points A and B is
reactive system.
that means its capacitive and inductive - (reactive components ) reactances will be the most important despite the distance between the points. (e.g 30m or 30 000 meters it is always going to be the same dependency present)
6 .wood is not the dielectric for us.
https://youtu.be/XOTLfnMOSqQ?t=412That video shows also the difference between dielectric suitable for us and wood table)
the
interface is made by surface of dielectric and air
even if there is not receiving Tesla coil it is capacitive coupling
of lightbulb and my hand -that is my body as part of resonance circuit
7. improper mode of your EM wave
That means that EM wave in its regular form is
TEM ( google it)
Your TEM wave in the interface is now at
TM mode-transverse magnetic mode. ( google it)
Note:
behavior of TEM in
Near Field is different that in
Far Field
typically the
Brewster Angle from
Top Capacitor down to
Earth is
reaching Earth at end of
Near Field
However if Top Capacitor is elevated low above the ground than distance from the bottom of the Tesla Coil to the
point of line drown from Top Capacitor to the Earth surface at 65 to 67 degrees may be shorter than
the end of
Near Field or it can "land" on Earth( - the lossy conductive medium) at
Fresnel Zone https://en.wikipedia.org/wiki/Fresnel_zoneso the recommended distance between two Tesla Coils the Tx and Rx at 1.1MHz is more than 21m
https://en.wikipedia.org/wiki/Near_and_far_fieldNote:
Please understand that TEM in TM mode is NON-RADIATIVE !!!!!
that means as you are in Far Field you cant receive it in air.
It is not radiating.Wesley
