RadioBanter

RadioBanter (https://www.radiobanter.com/)
-   Shortwave (https://www.radiobanter.com/shortwave/)
-   -   inductance loop versus inductance dipole ... (https://www.radiobanter.com/shortwave/95679-re-inductance-loop-versus-inductance-dipole.html)

Telamon June 1st 06 07:34 PM

inductance loop versus inductance dipole ...
 
In article ,
ca314159 wrote:

switcher wrote:

In article
,
Telamon wrote:

You are mixing apples and oranges.


maybe not


Talking about an electrically small loops lumped inductance makes sense
when constructing a L/C resonant antenna with an electrically small loop.


A dipole can be seen as a cap ...


This is the way I currently understand it:

A grounded vertical looks like an inductor with
capacitance between the distant ends.

When the two ends (top of the antenna and ground)
are bent closer to but not touching it forms a loop, LC tank.

Extending a tank into the 3rd dimension by rotatation
of the inductor around the capacitor forms a resonant cavity.

Extending the tank into the 3rd dimension by translation
results in a waveguide.

Has anyone seen anything like inductively ganged
horizontal loop antennas containing some passive
closed loops ? Sort of like a loop equivalent of
a yagi but omnidirectional?


The OP was a question about small loops and dipole antennas not
grounded verticals.

--
Telamon
Ventura, California

ca314159 June 2nd 06 05:06 PM

inductance loop versus inductance dipole ...
 
Telamon wrote:

The OP was a question about small loops and dipole antennas not
grounded verticals.


Shorted or opened leads are certainly alot easier
to make than infinite loops and dipoles.

Paper clip antennas:
http://ic.arc.nasa.gov/projects/esg/...ch/antenna.htm


All times are GMT +1. The time now is 01:50 AM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
RadioBanter.com