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Biquad Antenna

238 posts in this topic

I dont know what kind of biquad is this ,,but  biquad ia biquad 

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On 12/03/2020 at 7:38 PM, Admin said:

Something like that....

7.jpg

The velocity facter is introduced in kamda/4 ????;;

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11 hours ago, Admin said:

...it must to be..!!!

Jomy in m willing to assemble 2  double biquad. Can you give me the distance between it and  the length of  cable attaattachment?

On 12/03/2020 at 7:38 PM, Admin said:

Something like that....

7.jpg

The velocity facter is introduced in kamda/4 ????;;

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1)  l=k*lambda/4   k=(depending on the insulating material)...velocity factor

2)   the distance between 2xdouble biquad=(0,62,,,0,72)*lambda

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Hello, I found interesting article how to increase gain of biquad (double biquad) antenna by adding a director (second biquad in front of first). Article about that method by Dragoslav Dobricic (YU1AW): Link. According to a user of one of the Polish forums, a double biquad antenna with added director may have a gain of about 16dB (Link). Can you check this informations in simulation? Thanks.

 

2.jpg

1.jpg

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Erwin,this antenna is not as they say, look...

441.jpg

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Hi Jomy. I would like to get the simulation of this biquad for 2.4 

received_233891564824914.jpeg

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13dbi 

HERE:https://martybugs.net/wireless/biquad/double.cgi (one of those and a HALF ,1.5 dBi more = 14.5dbi)

Edited by clanon

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