Biquad Antenna

[efeksk 22]

Just now, Admin said:

 

How do I build this

[Admin 2545]

 What's so complicated to build it,,,??

A picture of a thousand words...!!!

[efeksk 22]

I did not understand

[efeksk 22]

ooow. Is not it possible

[efeksk 22]

You said you have a high gain value

[toobefree 11]

On 5/28/2017 at 0:17 AM, toobefree said:

what are you getting 16.4dbi from?

can you post the CST files for this?

how is the cable connection made?

 

[Admin 2545]

On 6/21/2017 at 2:19 PM, toobefree said:

how is the cable connection made?

 

This should be the connection with 50 ohm coaxial cable

[toobefree 11]

1 minute ago, Admin said:

 

I'm using rg402 

[Admin 2545]

Depending on the type of coaxial cable, the length is calculated.

For the sketch that I made, the coaxial cable used has the velocity factor=0,83

rg 402  has a velocity factor=0.74

[Admin 2545]

,,,biquad on PCB with parasitic director

 

 

[Admin 2545]

Biquad antenna in the air with parasitic director-it is necessary a laser cutting of the vibrator element (biquad patch)

 

[Admin 2545]

a variant of copper wire and platband

 

[antenna_kid 13]

On 14.06.2017 at 1:36 PM, Admin said:

On 14.06.2017 at 7:43 AM, Admin said:

try this...

Hi. 
As you can see. Found this forum very useful. 
Here's my try. Used 1mm fr4 (tu be true it was 1.1) for both PCB's. 
Cable that i've used is RG402.

Measured, and that design resonates over 6gh. I think it happens cos you simulated design with nylon spacers. 
Here it's my try...

[antenna_kid 13]

Can I ask you for same design but for 1200Mhz ? Please

[Admin 2545]

3 hours ago, antenna_kid said:

Can I ask you for same design but for 1200Mhz ? Please

,,, for 1200MHz,don"t you think that the antenna is too big, about 4,8 times...???

[Admin 2545]

4 hours ago, antenna_kid said:

Hi. 
As you can see. Found this forum very useful. 
Here's my try. Used 1mm fr4 (tu be true it was 1.1) for both PCB's. 
Cable that i've used is RG402.

Measured, and that design resonates over 6gh. I think it happens cos you simulated design with nylon spacers. 
Here it's my try...

 

 

What dimensions did you use for FR4 thick 1mm ,,, ???

I have not posted such dimensions....!!!

[antenna_kid 13]

No you not  you posted biquad2.igs file
As you see i've cut that biquad on CNC. I have small one so it was easy.

[Admin 2545]

36 minutes ago, antenna_kid said:

No you not  you posted biquad2.igs file
As you see i've cut that biquad on CNC. I have small one so it was easy.

But biquad2.igs file is for 1.5mm FR4 thickness,,,,!!!!!

[antenna_kid 13]

oh, it was under dimensions that you posted for 1mm (under picture). If so, my bad
But no problem with that, I've try make some case so it will shift antenna down

 

[Admin 2545]

7 minutes ago, antenna_kid said:

oh, it was under dimensions that you posted for 1mm (under picture). If so, my bad
But no problem with that, I've try make some case so it will shift antenna down

 

then multiplies the dimensions of the image with k = 1,0345 for the frequency of 5,8ghz

[antenna_kid 13]

I will try with some printed case. Hope that it will not shift to much.

[kazkuzee 1]

On 1/16/2017 at 10:36 PM, Admin said:

,,,a biquad antenna on PCB(10,5dBi) and panel antenna with 4biquad(16.5dBi)...

 

 

The Best ....!!!

 

 

send .cdr file please

[Admin 2545]

this file type is not good...??

 

biquad.dxf

biquad.gbr

[Luthfi Gibrani 2]

Hello.. Im newbie in cst, i wanna make a biquad antenna for my final project. Can anyone tell me the detail about how to make port for biquad wire antenna in cst? Or give some tutorial? Ive made the antenna with coaxial probe but there is radiated wave from the coaxial probe.. i dont understad, am i wrong or not.  Thank you very much.

Edited April 7, 2018 by Luthfi Gibrani

[Admin 2545]

Hi buddy,

for executing a biquad  antenna with port(SMA), it would be advisable to follow the instructions below...

 

For biquad antenna calculation you can use this,,,http://3g-aerial.biz/onlajn-raschety/raschety-antenn/raschet-antenny-kharchenko-zigzagoobraznoj

And for the SMA port, below is a CST file...

 

 

SMA mic.cst

 

SMA mare.cst