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Admin

WiFi/LTE antenna BDM-2

57 posts in this topic
2 hours ago, Admin said:

,,,no, it's not really necessary...!!!

Thank you for the clarification :):)

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On 24/12/2020 at 3:48 PM, Hamza said:

But  what you are willing to use for ? WiFi or 4G LTE ?

 

4G LTE

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Please read well about antennas it's not just design and construction! It's  for 2600 MHz  so you are out ( not for 1800 ) .

2- that design it's for siso  not Mimo ( don't use 2 ports with that cutting driven element ?).

3 the impedance matching 50 or 75 ( f connector or sma)

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8 hours ago, Hamza said:

Please read well about antennas it's not just design and construction! It's  for 2600 MHz  so you are out ( not for 1800 ) .

2- that design it's for siso  not Mimo ( don't use 2 ports with that cutting driven element ?).

3 the impedance matching 50 or 75 ( f connector or sma)

can we use single antenna on Mimo system ? i mean mimo have two port,can we just input 1 antenna ?

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That' need another simulation so the the dimensions will change!

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,, no, no new simulation is required, the second feed will be posted as in the image below...

b5f.jpg

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Jomy How about the isolation and the coupling of 2 ports   you can show the S- parameters

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 S- parameters, they are not so good...!!!!

screenshot_2469.jpg

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15 minutes ago, Hamza said:

It needs some improvement !

The only improvement is the use of two antennas...!!!

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LTE 1800 MiMO (BDM2) 15 mm boom  almost finished

1217.jpg

1216.jpg

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On 12/22/2020 at 2:24 PM, Admin said:

,,, yes, I think this it is the reality....

screenshot_2449.jpg

,,,and  here are the dimensions ...!!!

screenshot_2443.jpg

thank you ADMIN 

I made an antenna according to this design and the result was very positive even though I used a 75 ohm cable

Tested on 3G and 4G network 

The result in the photo is attached

1800mhz.jpg

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,,, otherwise Bester antenna...

719245_original.jpg

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On 12/21/2020 at 9:05 AM, Admin said:

 

3.jpg

1.jpg

2.jpg

hello i need an antenna active 1800 band most effectively thanks.

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,,, more than 15 dBi gain,can not...!!!

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On 22/12/2020 at 5:09 AM, Hamza said:

7,8,39,37,37,37,37,37,37....with 10 directors ...it's already shared by you in this forum. I had made it and I got excellent results 

Screenshot_2020-12-17-18-38-23-77_49276ee80ca398a7b5e76b921c4bbba8.jpg

does it work well at 75ohm conductors

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,,,most of the antennas on this forum are for 50 Ohm impedance coaxial cable...!!!!

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On 5/5/2021 at 7:35 PM, Antenna gun said:

hello i need an antenna active 1800 band most effectively thanks.

Is the disc thickness less than 0.5mm possible

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0,25-1 mm

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On 22/12/2020 at 2:24 PM, Admin said:

,,, yes, I think this it is the reality....

screenshot_2449.jpg

,,,and  here are the dimensions ...!!!

screenshot_2443.jpg

Hi Admin,

I would like to realize this antenna because as far as I understood should be the best design for 4G LTE (1800 Mhz). I guess this design is also the best solution for long distance.

Could you please show me where I shoud place the second feed? 

Thank you very much for you support 

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Доброго здравия уважаемые админы и форумчане.

Помогите пожалуйста с параметрами антенны.

Вводные данные: 4G частота вещания 1937-2137.

Пожалуйста смоделируйте если есть такая возможность на данный диапазон, буду привелико благодарен.

 

Good health, dear administrators and members of the forum.

Please help with the antenna parameters.

Input data: 4G broadcast frequency 1937-2137.

Please simulate if there is such a possibility for this range, I will be greatly grateful.

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Юрий 26,,, the dimensions in red are for you...

ea0.jpg

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