WiFi/LTE antenna BDM-2

[GiangVN777 1]

it also depends on the material ;-;

[Admin 2683]

17 hours ago, GiangVN777 said:

it also depends on the material ;-;

,,,no, it doesn't depend on the material...!!!

,,,but the most important thing is that the vibrating disc should be made of weldable material...!!!

[miloudsatdz 21]

On 01/07/2024 at 5:46 AM, Anjana said:

is this use one cable?? or two cables??

one cable .

[Anjana 1]

I want a antena for band 5 signals. Which is the best? 

[Admin 2683]

12 minutes ago, Anjana said:

I want a antena for band 5 signals. Which is the best? 

,,,for 824-894 MHz....???

[Anjana 1]

Yes sir

[Admin 2683]

,,,good, but you have to know that for these frequencies the antenna will be quite big...!!!

[Anjana 1]

It's ok. Please give me dimensions 

[Anjana 1]

18 hours ago, Admin said:

,,,for 824-894 MHz....???

Yes. I want that for catch 4G LTE band 5

[Admin 2683]

Do you want something like that...???

 

[Anjana 1]

Yes sir

Yes sir. I want dimensions also

[Admin 2683]

I'M WORKING ON YOUR ANTENNA NOW...!!!!

[Anjana 1]

Ok. Thank you

[Anjana 1]

On 5/15/2025 at 2:21 PM, Admin said:

I'M WORKING ON YOUR ANTENNA NOW...!!!!

sir, is it done?

[Admin 2683]

The fact that the antenna with several elements is very large for this frequency, I considered it necessary to make a reasonable antenna....

[Anjana 1]

If you can give me dimensions for both antennas sir. 

[Admin 2683]

A smaller version would be better....

[Anjana 1]

thank you sir.

[tardogblack 0]

Can you do at 1.42Ghz (Hydrogen line) Band Width atleast 100 Mhz, sir? I have some problem when I design its resonance at 1.42Ghz with BW=40Mhz Thank you so much

[Admin 2683]

On 5/26/2025 at 6:40 AM, tardogblack said:

Can you do at 1.42Ghz (Hydrogen line) Band Width atleast 100 Mhz, sir? I have some problem when I design its resonance at 1.42Ghz with BW=40Mhz Thank you so much

,,,this it"s yours...

[tardogblack 0]

On 5/27/2025 at 3:00 PM, Admin said:

,,,this it"s yours...

1. What factors affect the bandwidth, making it wider or narrower?

2. How is the feed point's distance from the center determined, and what effect does it have?

3. What is the reason for cutting the driven element? Why is it cut on one side or both sides, and why don't we use a full circular plate like the others?

4. Why 30 degree? 

5. Can the rod be made from a non-conductive material like PVC or plastic?

6. What are your recommendations if I want to extend the antenna to 15 elements?

Thank you if you reply this!

[Admin 2683]

 

1. What factors affect the bandwidth, making it wider or narrower?

   ,,,, the distance between the antenna elements and their size

2. How is the feed point's distance from the center determined, and what effect does it have?

      ,,,, the feed point determines the frequency range

3. What is the reason for cutting the driven element? Why is it cut on one side or both sides, and why don't we use a full circular plate like the others?

    ,,,,, the marginal cut of the vibrator marks an elliptical polarization

4. Why 30 degree? 

    ,,,,,for ellipticity

5. Can the rod be made from a non-conductive material like PVC or plastic?

   yes

6. What are your recommendations if I want to extend the antenna to 15 elements?

  go

[clanon 276]

On 5/29/2025 at 5:57 AM, Admin said:

3. What is the reason for cutting the driven element? Why is it cut on one side or both sides, and why don't we use a full circular plate like the others?

    ,,,,, the marginal cut of the vibrator marks an elliptical polarization

4. Why 30 degree? 

    ,,,,,for ellipticity

 

Jomy maybe YOU can post an animation (GIF) of the ENERGY flowing through the driven Disk surface...(to see it turn...)

[Admin 2683]

,,,maybe so...