5,5 GHz Circularly Polarized FPV Antenna

[Admin 2877]

It was interesting to design a small and lightweight antenna from available materials for FPV.
After looking at what is available in household stores, I decided to stop at zinc/brass for the antenna elements and a canister cover as a radom.
And so everything is in order - as it seemed to me, a lid from paint cans / mounting foam / air fresheners is perfect for radom. Its diameter is 77 mm external and 84 mm internal. Height from 12 to 40 mm. Material-polypropylene.
Based on this, the dimensions of the entire structure were selected.
you will need brass / galvanized 0.25 mm thick, brass tube diameter 4 mm external (wall thickness 0.25 mm), screw m3 -40 mm. cap nut m3, SMA connector, pipe cutter, metal scissors, drills with a diameter of 1.4 and 3 mm.
The reflector is made of sardine cans.
General view of the structure and results:

[Harry36 150]

On 23.12.2021 at 1:52 PM, Admin said:

It was interesting to design a small and lightweight antenna from available materials for FPV.
After looking at what is available in household stores, I decided to stop at zinc/brass for the antenna elements and a canister cover as a radom.
And so everything is in order - as it seemed to me, a lid from paint cans / mounting foam / air fresheners is perfect for radom. Its diameter is 77 mm external and 84 mm internal. Height from 12 to 40 mm. Material-polypropylene.
Based on this, the dimensions of the entire structure were selected.
you will need brass / galvanized 0.25 mm thick, brass tube diameter 4 mm external (wall thickness 0.25 mm), screw m3 -40 mm. cap nut m3, SMA connector, pipe cutter, metal scissors, drills with a diameter of 1.4 and 3 mm.
The reflector is made of sardine cans.
General view of the structure and results:

 

It seems to me that I saw and read it somewhere? ...

,,,or modeled and wrote a description for this))))

 

[eco32 47]

On 23.12.2021 at 11:52 AM, Admin said:

After looking at what is available in household stores, I decided to stop at zinc/brass for the antenna elements and a canister cover as a radom.

household stores is my favorit design mathod. Quick simulation with a very approximate model  27...30dBi. summing/phasing the signal is difficult in this band.

[Admin 2877]

This is not what your tray looks like above....!!!

[eco32 47]

7 hours ago, Admin said:

This is not what your tray looks like above....!!!

This shape was much closer  to Metal form for muffins, but not able in matlab sa Antenna Array. Matlab has big limitations, I wrote earlier that this is a very approximate model. I don't have the ability to do it more accurately.

[Lloydsmake 0]

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[Robertgak 0]

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