Thread: What's the Impulse response of a loop and dipole antenna?
View Single Post
  #2   Report Post  
Old October 31st 08, 12:33 PM posted to rec.radio.amateur.antenna
Cecil Moore[_2_] Cecil Moore[_2_] is offline
external usenet poster
  
First recorded activity by RadioBanter: Mar 2007
Posts: 3,521
Default What's the Impulse response of a loop and dipole antenna?
Scott Stephens wrote:
Since antennas have reactance and radiation resistance, ...

It might help to note that the antenna feedpoint
impedance is a virtual impedance - a ratio of total
voltage to total current. A dipole is a standing
wave antenna with a feedpoint impedance of:

Zfp = (Vfor+Vref)/(Ifor+Iref) [all phasors]

This type of impedance is covered by the (B) definition
of "impedance" in "The IEEE Dictionary". It is not the
same thing as an "impedor" which is covered by the
(C) definition of "impedance".
--
73, Cecil http://www.w5dxp.com
Reply With QuoteReply With Quote