Biquad Antenna

[Hamza 43]

[aurel 22]

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

[Hamza 43]

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

Something like that....

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

[Admin 2545]

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

[Hamza 43]

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....

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

[Admin 2545]

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

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

[Erwin 0]

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.

 

[Admin 2545]

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

[Erwin 0]

Yes, it was too beautiful to be true.

[Hamza 43]

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

[Hamza 43]

https://youtu.be/Gc2D16xpziEHi

[clanon 246]

18 a 32 dbi...with a FLUX CAPACITOR and 1.21 GIGAWATTS! 

 

https://www.youtube.com/watch?v=Gc2D16xpziE&lc=UgwcKyseYpusW27DM0N4AaABAg

Edited December 20, 2020 by clanon

[clanon 246]

13dbi 

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

Edited December 20, 2020 by clanon

[Antonius 17]

On 5/28/2017 at 2:39 PM, Admin said:

Only under that form I have now found

 

pcb simple biquad.cst

 

Sorry master, if this antenna is made with a thin sheet of aluminum, will it have the same gain or will it get worse?

[Admin 2545]

,,, maybe yes, but you need other distances between the biquad antenna..!!!

[Antonius 17]

5 hours ago, Admin said:

,,, maybe yes, but you need other distances between the biquad antenna..!!!

How to determine the distance between the biquad antenna and the aluminum sheet? Or maybe you can help master?

5 hours ago, Admin said:

,,, maybe yes, but you need other distances between the biquad antenna..!!!

On 5/28/2017 at 2:39 PM, Admin said:

Only under that form I have now found

 

pcb simple biquad.cst

 

Sorry master, if this antenna is made with a thin sheet of aluminum, will it have the same gain or will it get worse?

[clanon 246]

8 hours ago, Antonius said:

Sorry master, if this antenna is made with a thin sheet of aluminum, will it have the same gain or will it get worse?

More efficient (NO DIELECTRIC) , a little more gain , imho

[clanon 246]

1mm aluminum

size should be increased X,Y by 10% (1.1)

Dielectric used must be known (Boom and spacers)

impedance close to 50 from 2 to 2.5 ghz

Vswr should be adjusted (exact materials needed and Bandwidth)

"More efficient (NO DIELECTRIC) , a little more gain"

Edited September 14, 2021 by clanon

[Harry36 140]

17 hours ago, clanon said:

1mm aluminum

size should be increased X,Y by 10% (1.1)

Dielectric used must be known (Boom and spacers)

impedance close to 50 from 2 to 2.5 ghz

Vswr should be adjusted (exact materials needed and Bandwidth)

"More efficient (NO DIELECTRIC) , a little more gain"

This is a slot-loop antenna. it is not necessary to execute the slowing-down structure on such elements. can be done with wire elements.

 

[clanon 246]

12 to 15 dbi and a nice 50 ohms curve in the whole bandwidth...

show more details on the INFINITE like shape...

so it behaves  like 3 half waves SLOTS...?

(wideband)

What happens if that shape is multiplied into a flat BOX...?

(4 , 6 , 8 of those)

 

Edited September 15, 2021 by clanon

[Harry36 140]

19 hours ago, clanon said:

12 to 15 dbi and a nice 50 ohms curve in the whole bandwidth...

show more details on the INFINITE like shape...

so it behaves  like 3 half waves SLOTS...?

(wideband)

What happens if that shape is multiplied into a flat BOX...?

(4 , 6 , 8 of those)

 

Big sizes... 15 dbi ~ 200*200*200 mm

[voiceofbusiness 0]

On 6/13/2017 at 3:56 PM, efeksk said:

FR41mm pcb.

Frequency = 5800 MHz

Hi, I am new to this site.  I would like to build a Double Biquad Antenna for 920MHz. Could you please share the design and simulation for this? 

[Admin 2545]

,,,voiceofbusiness,,, the place of this type of antenna is not here, try to post in the right place...!!!

[mojtaba.hdpr 1]

On 4/23/2018 at 10:03 AM, Admin said:

,,,no,

if you want for the 5.2 GHz frequency ,tell me...?!

Hi admin

I know the date of this post is very old, but if possible, do the design for the 5200 frequency as well

i want to make it 
thank you

Edited May 3, 2022 by mojtaba.hdpr

[Admin 2545]

,,,hi buddy...!!!

,,, yes, it is possible, but you have to wait a little longer until I do a simulation for this frequency...!!!