How to know the wavelenght of antenna?

[Maverickmax]

Wavelenght - antenna

Hi

I am very confused with antenna design because Im not 100 percent sure about the wavelength and how to design the antenna properly.

Let say, I am interested to build an antenna using a can. I have to drill a hole with a precision measurement from the bottom of the can to somewhere up to 20mm then insert the wire using the N-connector throught the hole and I have to make sure that the length of wire must be accurate otherwise.....

How i know the length of antenna, let say, omnidirectional antenna is the correct.

I don't really understand these stuff. So can anyone help me?

Maverickmax

 

[egliu]

Re: Wavelenght - antenna

are you talking about a sleeve antenna design

 

[Maverickmax]

Re: Wavelenght - antenna

I don't know what Sleeve antenna is but no. I just would like to know how to design any antenna therefore I need to a tutorial or information for me to follow instruction step by step in order to get 'practical experience' in calculating and designing antenna

Maverickmax

 

[egliu]

Re: Wavelenght - antenna

the simplest antenna of dipole is about half wavelength

 

[Maverickmax]

Re: Wavelenght - antenna

Ok, what is half-wavelenght, quarter- wavelength etc?

 

[plasma]

Re: Wavelenght - antenna

Hi Maverickmax

just look at
**broken link removed**

PL

 

[BrunoK]

Re: Wavelenght - antenna

Ok, what is half-wavelenght, quarter- wavelength etc?

What do u mean ?? You do know what a wavelenght is don't u ?? ( c/f in air, in another media you have to add the square root of the dielectric of the medium in the denominator. c is the speed of light and f the operating frequency). Then the other answers itself.

Best Regards
Bruno

 

[Element7k]

Re: Wavelenght - antenna

Hi Maverickmax,

maybe this website will help you understand the basics of an antenna.

http://www.gigaant.com/?id=246&show=418

Then maybe you can use two strips of wires of the correct length to obtain a simple dipole antenna. Do a search on google for construction of dipole and monopole antennas.

Hope this helps.

Element7k

Hi

I am very confused with antenna design because Im not 100 percent sure about the wavelength and how to design the antenna properly.

Let say, I am interested to build an antenna using a can. I have to drill a hole with a precision measurement from the bottom of the can to somewhere up to 20mm then insert the wire using the N-connector throught the hole and I have to make sure that the length of wire must be accurate otherwise.....

How i know the length of antenna, let say, omnidirectional antenna is the correct.

I don't really understand these stuff. So can anyone help me?

Maverickmax