Antenna impedance

Discussion in 'Wireless & RF Design' started by Circuitboy, Aug 18, 2009.

  1. Circuitboy

    Thread Starter New Member

    Aug 27, 2006
    3
    0
    If I have two vertical antennas, one resonates at 5mHz and the other resonates at 550mHz, Why would the feed impedance differ?:eek:
     
  2. KL7AJ

    AAC Fanatic!

    Nov 4, 2008
    2,040
    287
    If ALL the dimensions are scaled precisely, the feedpoint impedance will be the same. However, you must scale the diameter of the conductors as well; a conductor that looks like a piece of wire at 5 MHZ may look like a 55 gallon drum at 500 MHz!

    eric
     
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