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Identify this antenna please
- Thread starter Tokin
- Start date
For a model, the question is, how is this antenna wired inside.
Typically you have a dipole layout, or a ground plane layout. I wouldn't assume both as the ground plane layout would effectively render the dipole bottom half effectively useless if they are wired together... Perhaps if you can check continuity between the different elements?
I wonder if either the ground plane elements or what appears to be a lower dipole element is actually floating and not connected to anything?
The DB
Typically you have a dipole layout, or a ground plane layout. I wouldn't assume both as the ground plane layout would effectively render the dipole bottom half effectively useless if they are wired together... Perhaps if you can check continuity between the different elements?
I wonder if either the ground plane elements or what appears to be a lower dipole element is actually floating and not connected to anything?
The DB
Putting together some quick models, here is the radials and bottom dipole element all attached compared to a standard 1/4 ground plane at the same height.
The results aren't even comparable, so it is definitely not wired as it appears at first glance... So to continue I need more information.
Edit, added the below section.
New model, that antenna in freespace.
This explains why its gain in he above comparison is so low, its dumping most of its output into the earth below... This actually raises more questions for me.
The antenna elements, are they all the same length? Are either of the vertical elements longer (or shorter) than the rest? I ask this because I am wondering if it is possible to steer the lobes in this design to get a more favorable output?
Also, are we sure the top element is the driven element? Perhaps the lower element is, or maybe even one of the what we would call the ground plane elements?
So many questions...
Unfortunately I don't have to much more time to play with this today, gotta go to work...
The DB
The results aren't even comparable, so it is definitely not wired as it appears at first glance... So to continue I need more information.
Edit, added the below section.
New model, that antenna in freespace.
This explains why its gain in he above comparison is so low, its dumping most of its output into the earth below... This actually raises more questions for me.
The antenna elements, are they all the same length? Are either of the vertical elements longer (or shorter) than the rest? I ask this because I am wondering if it is possible to steer the lobes in this design to get a more favorable output?
Also, are we sure the top element is the driven element? Perhaps the lower element is, or maybe even one of the what we would call the ground plane elements?
So many questions...
Unfortunately I don't have to much more time to play with this today, gotta go to work...
The DB
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