Re: Electrically short antenna


thejim wrote:
> I read in a book the following:
> An Electrically short antenna means that is shorter than one half
> wavelength which also means that is not resistive.
> I have 2 Qs.
> 1.When it says "shorter than one half wavelength" it means the physical
> length?
> 2.Why being electrically short means it is not resistive?

1) The physical length is shorter than one half the wavelength of the
signal
2) An antenna or transmission line which is not terminated with its
characteristic impedance will have an input impedance which has phase
angle and will be an impedance rather than a pure resistance.

fred.

.

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