Antennas for Drones

[Aksonx2 14]

4 minutes ago, Admin said:

,,,okay, I will try to do a simulation of this antenna...!!!

...the input impedance is 50 Ohm...???

Yes ,50 Ohm.

[Aksonx2 14]

read about such antennas. Made a connection point as in the photo. It seems better but I still want better

 

[Admin 2598]

Aksonx2, please excuse me, I have small problems with the simulation program and I'm going to be a little late with it...!!!

[Aksonx2 14]

On 13.05.2024 at 3:16 PM, Admin said:

Aksonx2, please excuse me, I have small problems with the simulation program and I'm going to be a little late with it...!!!

Don't worry. It's ok. I'm also waiting for windless weather to test this antenna option in field flights. Science requires sacrifice!!!

[Admin 2598]

Aksonx2,

,,,I finally managed to do the simulation for you, but it seems that the antenna is not quite successful..!!!

[Aksonx2 14]

1 hour ago, Admin said:

Aksonx2,

,,,I finally managed to do the simulation for you, but it seems that the antenna is not quite successful..!!!

Thank you so much for your time. It also seemed to me that this antenna connection option is a little incorrect. 

I changed the location of the cable connection in the middle of the connection line, above I posted a photo. The results were as follows on the analyzer. The results above are incorrect since they were in a small room and industrial interference was detected on the air

[Aksonx2 14]

[Admin 2598]

,,,my friend, for which frequency do you want the antenna to work...???

[Aksonx2 14]

I apologize for the arrogance:) do not share the project file? In order not to waste your time, I will play with the size of the antennas myself.

 

[Admin 2598]

okay, maybe later, I have a little work now...!!1

[Aksonx2 14]

48 minutes ago, Aksonx2 said:

I apologize for the arrogance:) do not share the project file? In order not to waste your time, I will play with the size of the antennas myself.

 

 

54 minutes ago, Admin said:

,,,my friend, for which frequency do you want the antenna to work...???

I fly this antenna now at 1320 MHz. I suggest you stay that way. Cut less:))))

[Admin 2598]

,,,this it is...

1230mhz.cst

[Aksonx2 14]

changed the connection location and replaced the wire with strips in the connection. 

If you have free time, can you check me out? I'm still in CST. According to your articles on the forum. A little later I will put optimization

 

1320patch.cst

[Admin 2598]

,,,did you really buy this antenna from the store...???

[clanon 261]

IIRC the WIRES UNDER the discs (closer to reflector) gave less reactivity ...improving VSWR...

[Admin 2598]

Crosshair®Xtreme Pair for HDZero Goggles

The HDZero system works by using 2 diversity systems, one on the left side and the other on the right and then combining the best signals of both of those into one HD signal. 

Specifications:

Polarization: RHCP or LHCP

Gain: 10.25dbic

Axial ratio: 0.99 (as measured)

Bandwidth: 5300MHz-6400MHz

Beamwidth: 120 degrees

-3db beamwidth: +/-30 degrees

Mounting Solution: Black Included (other colors optional)

Connector: SMA Male 90

[alexx_57 1]

On 27.08.2021 at 3:25 PM, Admin said:

,,,it is a very good antenna but it should have a wider bandwidth for the 50 Ohm impedance...!!!!

Dear Admin.

I tried to create my antenna, but its bandwidth isn't wider as yours.

Can you will look for my *.cst model and will tell me what I do wrong?

How can I expand bandwidth?

Thanks.

Slot_v3.cst

[Admin 2598]

,,,for which frequency band do you want the antenna to be...???

[alexx_57 1]

1200-1600 MHz

52 minutes ago, Admin said:

,,,for which frequency band do you want the antenna to be...???

 

[Admin 2598]

,,,for this frequency range it still seems like a big antenna to me...!!!!

[alexx_57 1]

I used this antenna as a prototype, but my antenna parameters isn't equal to one.

I thought, I make something wrong.

[Admin 2598]

,,,but this antenna does not have the 1200-1600 MHz band..!!!

,,,this is what the antenna you want should look like...!!!

[alexx_57 1]

yes, of course, I now.

I modified my antenna dimensions, but cannot get results like by prototype.

My CST experience isn't good. I only study this product and I make mistakes.

That's why I here, to ask advice and recommendations from experienced friends.

[Admin 2598]

,,,take this...

sputnik1400.cst

[alexx_57 1]

7 minutes ago, Admin said:

,,,take this...

sputnik1400.cst

thanks!

but one more question, how can I connect SMA or RG cable to this antenna?

I have to soldering cable to port points?