In article ,
Fred McKenzie wrote:

In article ,
wrote:

Fred:

When would it be appropiate to use
a half-wavelength or quarter as the
dimension of the antenna being built?

KMan-

Perhaps I was mistaken in saying a quarter wave wire was "ideal". My
main point was that the length was a compromise to begin with, so is not
critical.

Interestingly, if the input is a *very high* impedance (a FET gate,
say), then the antenna length almost does not matter -- if the impedance
were truly infinite, then a point antenna would be fine. The E-field
will induce the same voltage in the antenna no matter how long or short
it is.

Impedance matching is only important when the input needs power, not
just voltage.

Isaac