Modifying a 2 4 GHz Dipole Antenna to 5 GHz
Intro: Modifying a 2 4 GHz Dipole Antenna to 5 GHz
In this video I convert a 2.4 GHz dipole antenna into a 5 GHz antenna. I needed quite a few 5 GHz antennas for a project I am working on and it was much cheaper to modify 2.4 GHz antennas.
5 GHz and 5.8GHz dipole antenna: http://youtu.be/ysHP_Yi8bx8
2.4 GHz dipole antenna: http://youtu.be/bs8hvXGJdhM
4 Comments
anihver 9 years ago
Keep up the good work. Cheers
pallc 8 years ago
You'll have to read up on antenna theory. Something to do with the wavelength in a certain unit like meters and the length of the antenna being a fraction of the wavelength... like a wavelength, 5/8, 1/2, 1/4 wavelength.
http://en.wikipedia.org/wiki/Electrical_length
http://www.hamuniverse.com/hamantennalengths.html
There is an old device to measure wavelength of an emitter/transmitter that was called a lecher wire.
http://en.wikipedia.org/wiki/Lecher_lines
This device helped me visualize why. There is also something called a Standing Wave Ratio (SWR) Meter.
http://en.wikipedia.org/wiki/Standing_wave_ratio
This goes further to help match up the impedence of the antenna to the receiver/transmitter. The ratio of 1:1 is desired so there are not losses to heat and you have maximum efficiency.
anihver 9 years ago
Danger is my middle name 9 years ago
Not my area of expertise at all, but very interesting!