BESTER BDM-2 3G ANTENNA, 15dBi

[Admin 2545]

The BDM-2 is a wave channel with crack initiation, and delay line is made of sequentially installed disk elements.

Compared to classic antenna BDM new directed antenna BDM-2 is:
More gain;
Improved radiation pattern;
More stable operating parameters;
Greater reliability;
Superior mechanical characteristics.

 

[sa3500 21]

Today completed the antenna. What to say....
The link below is the same and easier to manufacture:

 

 

[vars-cat 12]

https://ypylypenko.livejournal.com/73658.html

Jomy, can you modify this antenna for circular polarization? In my country, mobile operators use this type of polarization in 3g networks.

[Admin 2545]

, why don't you try this,for the first time...???

 

,,, it may be other dimensions, it must be checked however ... !!!

[vars-cat 12]

2 hours ago, Admin said:

why don't you try this,for the first time...???

It's not urgent.

2 hours ago, Admin said:

,,, it may be other dimensions, it must be checked however ... !!!

Check if you have time. 

Why two ports? There is no MIMO support on 3g networks.

[Admin 2545]

Well, then tell me for which frequency range...???!!!

[vars-cat 12]

1920-2170 MHz.

[Admin 2545]

,, with galvanized sheet, quoting thickness ... 1mm or 0.5mm...???

[vars-cat 12]

Galvanized sheet, thickness = 0.5 mm. 

[vars-cat 12]

Too difficult task?

[Admin 2545]

1 hour ago, vars-cat said:

Too difficult task?

,,,my friend, I've been pretty busy the last few days..!!!

[vars-cat 12]

Ok. Just wanted to make sure you didn't forget

[vars-cat 12]

On 26.11.2019 at 0:00 PM, Admin said:

,,,my friend, I've been pretty busy the last few days..!!!

.....!!!,,,,,,,,Still pretty busy?,,,,,,,,,,!!!.....

[Admin 2545]

But, why don't you try it...???

[vars-cat 12]

11 hours ago, Admin said:

But, why don't you try it...???

Because you posted a new drawing 11 hours ago

And what about this? 

On 22.11.2019 at 11:52 AM, vars-cat said:

Why two ports? There is no MIMO support on 3g networks.

 

[Admin 2545]

,,, okay, so it goes ... ??...SISO...

[vars-cat 12]

Can you replace the SMA connector with an F? sgser (Antex engineer) and yurik82 say that such a connector can be used, but it must be considered in the model.

https://ypylypenko.livejournal.com/76027.html

[Admin 2545]

,,, give me the dimensions to this connector F(in section)...!!!

These connectors are for 75 Ohm impedance...???

[Admin 2545]

I think that's for the good...

[vars-cat 12]

59 minutes ago, Admin said:

,,, give me the dimensions to this connector F(in section)...!!!

These connectors are for 75 Ohm impedance...???

,,, I wrote to Yurik82 to give measurements (he took measurements). Waiting for his answer...!!!

Yes, 75 Ohm...

 

[vars-cat 12]

[Admin 2545]

If you are friends with these people, why don't you ask them to solve your problem...???!!!

[vars-cat 12]

6 minutes ago, Admin said:

If you are friends with these people, why don't you ask them to solve your problem...???!!!

I asked, but he wouldn't help. This must be a very difficult task.

[Admin 2545]

I do not believe that...!!

[vars-cat 12]

20 hours ago, Admin said:

I do not believe that...!!

Unfortunately this is true. Didn’t even give a connector model..

 

22 hours ago, Admin said:

,,, give me the dimensions to this connector F(in section)...!!!

Here you go (big thanks to Sergey Sychugov).

F-female.aedt

Edited December 11, 2019 by vars-cat