On 08/22/2012 08:47 PM, amdx wrote:
resonant antenna [′res·ən·ənt an ′ten·ə]
(electromagnetism)
An antenna for which there is a sharp peak in the power radiated or
intercepted by the antenna at a certain frequency, at which electric
currents in the antenna form a standing-wave pattern.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright ©
2003 by The McGraw-Hill Companies, Inc.


I thought a resonant antenna was resistive without any reactance.
Mikek

Hello, and resonance for an antenna (or any device for that matter)
occurs when the reactive component of the input impedance vanishes. For
a given impressed voltage, the input current is relatively large at
resonance. The definition cited above is completely consistent with
this state (Did you really think something from a McGraw-Hill book
wouldn't be a "proper" definition?)

Now, we also have "antiresonance" in which the reactive component also
vanishes but for a given impressed voltage the input current is
relatively small.

Both resonance and antiresonance occur in antennas (but at different
frequencies). Sincerely, and 73s from N4GGO,

--
J. B. Wood e-mail: