Welcome to WIFI Antennas

Register now to gain access to all of our features. Once registered and logged in, you will be able to contribute to this site by submitting your own content or replying to existing content. You'll be able to customize your profile, receive reputation points as a reward for submitting content, while also communicating with other members via your own private inbox, plus much more! This message will be removed once you have signed in.

Admin

Collinear antenna array

35 posts in this topic

"or you may want this ...

CIMG2900.JPG

CIMG2903.JPG

screenshot_4839.jpg

wifi 6dB.png

 

40.jpg

1 person likes this

Share this post


Link to post
Share on other sites

hello brother how are you, long time to see

i would try to make like this, what do you thinking

antena.png

Share this post


Link to post
Share on other sites

Another good collinear antenna with a 9 dBi directivity gain...
 

9dbi_01.jpg

3 people like this

Share this post


Link to post
Share on other sites

Proposed dipole array antenna which makes omnidirectional  radiation possible and is made of coaxial cable with metal cylinders...

 

colinear_01.jpg

colinear_02.jpg

colinear_03.jpg

colinear_04.jpg

colinear_05.jpg

colinear_06.jpg

colinear_07.jpg

1 person likes this

Share this post


Link to post
Share on other sites

what is the formula for calculating rubber duck antenna

Share this post


Link to post
Share on other sites

HALF Wavelength with stub balun 1:1 (reduced in length due to dielectric effect )

so it will end up being two sections of about 30 mm IMHO

Share this post


Link to post
Share on other sites

please provide pictures and measurements so that I understand a little

Share this post


Link to post
Share on other sites

https://www.allaboutcircuits.com/uploads/articles/2.4GHz_Wi-Fi_Antenna_.5_Wavelength_Dipole.png

In the sleeve dipole the top element is normally  simple the coax center conductor extended. This is also normally left with its insulation intact, which means its length must be compensated for by the insulation's permittivity. (the antenna is SHORTER than an a free dipole ; wich is (speed of light/frecuency ) / 2 )

coxial.jpg

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now