Circularly polarized cross dipole antenna

[Admin 2611]

A circularly polarized cross dipole antenna includes a cross dipole antenna element formed of two pairs of inverted-V-shaped dipole antenna elements, which are bent like an inverted “V” at a set angle(30 degree), so as to cross each other on a ground plane, and a feeding mechanism provided to perform a single-point feed through a feeding section common to the inverted-V-shaped dipole antenna elements of the cross dipole antenna element.

General antenna calculation formula

Dimensions closer to the truth

[Admin 2611]

X-DiPol with adaptive line

[pragata.my.id 26]

what materials are used, and how much is the thickness?

[Admin 2611]

zinc sheet 0,5mm, 1mm

[pragata.my.id 26]

Assumption many people wrong, not always bad zinc when compared to copper, this antenna design is proof.. 
and look at the graphics, steady..!

[Admin 2611]

,,,the zinc sheet does not oxidize quickly....!!!!

[bbfile 3]

On 17.12.2017 at 20:26, Admin said:

X-DiPol с адаптивной линией

Hi! Can i request CST file this antenna? 
Thanq !) 

[Admin 2611]

I no longer have this file...!!!

[bbfile 3]

It's a pity(
Then can you tell me how it was connected there?
Maybe you'll remember someday)
 

[bbfile 3]

I did it in CST, but the results of VSWR and S11 are bad.

[clanon 263]

Circular pol means : there is 90 degrees delay between feeding points...to force a rotating 1/4 rotation on Each quarter wave (half dipole)...imho built in the reflector (strips)

Edited January 27 by clanon

[clanon 263]

without the delay is only two dipoles one Vertical the other Horizontal (Crossfeeding High Isolation BAD) @Harry36

Edited January 27 by clanon

[Harry36 147]

On 27.01.2025 at 8:48 PM, clanon said:

without the delay is only two dipoles one Vertical the other Horizontal (Crossfeeding High Isolation BAD) @Harry36

???

[clanon 263]

56 minutes ago, Harry36 said:

???

without 90 degrees phase shift (at half wave center Feed)...two crossed dipoles are NOT Circular Polarized...

[clanon 263]

[Harry36 147]

3 hours ago, clanon said:

without 90 degrees phase shift (at half wave center Feed)...two crossed dipoles are NOT Circular Polarized...

This is all well and good, but what does this have to do with me? Did I say that's not true? The option that was originally posted by the Admin in the topic is not a circularly polarized antenna.  Without phase-shifting elements in this design it is impossible to obtain circular polarization. This is clear to me. in the initial version it is a regular mimo dipole. Perhaps the admin used a phase shift on the port when modeling. I have nothing to do with this.

[Harry36 147]

On 04.04.2017 at 2:12 PM, Admin said:

and a feeding mechanism provided to perform a single-point feed through a feeding section

The description contains a power section. it is missing from the simulation.

[clanon 263]

On 29/1/2025 at 8:36 PM, Harry36 said:

This is all well and good, but what does this have to do with me? Did I say that's not true? The option that was originally posted by the Admin in the topic is not a circularly polarized antenna.  Without phase-shifting elements in this design it is impossible to obtain circular polarization. This is clear to me. in the initial version it is a regular mimo dipole. Perhaps the admin used a phase shift on the port when modeling. I have nothing to do with this.

i wasn't blaming anyone , just asking for YOUR opinion...