[Antennas] Hairpin Monopole

Robert Lay (W9DMK) [email protected]
Wed, 7 May 2003 08:27:04 -0400


Dear Wes,
It's not a matter of what I think - it's a simple fact. The resistive
component of the antenna's input impedance (the radiation resistance) is
generally higher than a conventional, non-folded radiator.

Efficiency is governed by the relationship between the radiation resistance
and the ground losses component. Therefore, the higher the radiation
resistance the higher the efficiency. Remember, the original discussion of
theory about these folded monopoles (or folded dipoles, as well) is that
they have a higher radiation resistance.

73 de W9DMK (Bob Lay in Dahlgren, VA
http://www.qsl.net/w9dmk