bending dipole "arms "

[anneranch]

the radiation pattern of common dipole is "donut shape"
For sake of argument - the "arms " of the dipole are "in line" or
180 degrees in relation to each other .
When this relation angle changes - measured on "narrow " side
to 90 degrees - how does the radiation "donut" changes ?

I would be more that happy to ask Mrs Google,
but have no clue how to formulate my question.

 

[nd5y]

You can use antenna modeling software like MMANA-GAL basic to see for yourself how bending dipole elements affects the radiation pattern.

 

[prcguy]

It sounds like your asking about the radiation pattern of a classic dipole to something like an inverted V where the elements are no longer parallel and in line with each other. Here is someone that modeled such an antenna with the resulting image.

Inverted V Antenna - A popular Dipole variant | VU2NSB.com - Amazing Amateur Radio

An Inverted V antenna is a very popular variant of the standard horizontal dipole. In his article, I will try to bust some of the myths associated with Inverted V and dipoles.

vu2nsb.com

 

[anneranch]

It sounds like your asking about the radiation pattern of a classic dipole to something like an inverted V where the elements are no longer parallel and in line with each other. Here is someone that modeled such an antenna with the resulting image.

Inverted V Antenna - A popular Dipole variant | VU2NSB.com - Amazing Amateur Radio

An Inverted V antenna is a very popular variant of the standard horizontal dipole. In his article, I will try to bust some of the myths associated with Inverted V and dipoles.

vu2nsb.com

As much as I tried to explain what I am asking - i have failed.
No, my question is not about inverted v - I am asking how the radiation pattern
will change when both elements are still in same horizontal plane.

Let's s call it ":horizontal inverted v " .

i also neglected to add , as in my other post, I will eventually do modeling,
i asked here in case somebody knows a simple answer or there is a link.

 

[prcguy]

I've failed to understand the question. If you start with a dipole with both elements at 180 degrees to each other, that to me sounds like a "conventional" dipole. If you change the relation angle to something other than 180 degrees it seems it would become an inverted V throughout most angles from 179 degrees to 90 degrees. Does your question fit within that description or is your proposed antenna outside of those bounds?

As much as I tried to explain what I am asking - i have failed.
No, my question is not about inverted v - I am asking how the radiation pattern
will change when both elements are still in same horizontal plane.

Let's s call it ":horizontal inverted v " .

i also neglected to add , as in my other post, I will eventually do modeling,
i asked here in case somebody knows a simple answer or there is a link.

 

[gh6406]

I believe the OP is questioning as if looking down from above, that the "legs" are no longer straight, or 180 degrees. Maybe picture inverted V on it's side?

 

[anneranch]

I believe the OP is questioning as if looking down from above, that the "legs" are no longer straight, or 180 degrees. Maybe picture inverted V on it's side?

Yes,. inverted V on its side is the best description .... or "the height of the elements is constant ".


I have been asking Mrs Google and so far no success...

 

[jwt873]

That would be a V dipole..

 

[anneranch]

That would be a V dipole..

View attachment 123483

Best definition so far.
However - I thought that "dipole" is where "h = lambda/4 " .
As presented , h varies , therefore it is NOT Vee dipole .
And since h varies , then the alpha and D cannot be calculated as presented either.


But getting closer... Still antenna modelling IS the ultimate answer.

 

[anneranch]

Found this

https://www.researchgate.net/profile/Wahyu-Gunawan/publication/310846226_The_Effect_of_Various_Angles_of_V-shaped_CPS_on_the_Antenna_Characteristics/links/583a7f1a08ae3d91723f71e5/The-Effect-of-Various-Angles-of-V-shaped-CPS-on-the-Antenna-Characteristics.pdf?origin=publication_detail

Some surprising conclusions / observations .
Not sure about " Effect_of_Various_Angles_of_V-shaped_CPS_on_the_Antenna"

Missed definition of "CPS "...
Interesting to note how they measure the "alpha" angle.
It almost looks as the half alpha - going from zero to 90 degrees has very little affect on directivity of the atenna.