RadioBanter - View Single Post

frankieNrosie · December 14th 10, 06:19 AM

Quote:

Originally Posted by Richard Clark

On Sun, 12 Dec 2010 12:18:11 +0000, frankieNrosie
wrote:

If you want one frequency, then it would imply one band.

If you want multiband, then you need to give us the other frequencies.

the other freq, not specific yet..

Then how do you know it is multiband?

Your most specific request is for a folded dipole at one frequency.
From end-to-end it will be slightly less than 1/2 wavelength long at
that frequency.

Now, if you add another frequency, your folded dipole will need to be
1/2 wavelength long at that frequency.

Obviously to be "multiband" your folded dipole cannot be both lengths
at the same time. The requirment for the fold of the folded dipole is
obscure. A fan dipole would work for multiband.

i use the diode as the switch to reconfigure the freq..later on i will
upload the figure of proposed antenna

I have not the vaguest idea what that is about. "The diode"?

73's
Richard Clark, KB7QHC

diode is use as a switch to vary the length of the driven element..
so, if i got many length of the driven element, thus i'll have many freq..
do u understand me?