House_Cat
Joined: 21 Feb 2002
Posts: 1358
Helped: 275
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 23 Aug 2008 21:28 Re: URGENT!:LOWERING THE Q FACTOR OF THE ANTENNA |
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To lower the Q for a loop antenna, you need to increase the series resistance or decrease the inductance. If you're using a multi-turn wire loop, decrease the size of the wire to increase the resistance, decrease the diameter of the loop, and/or decrease the number of turns to decrease the inductance.
For a multi-turn loop antenna, Q = 2πfoL/(Rr+RL) where fo=frequency, L=inductance, Rr=radiation resistance, and RL=resistive loss.
If you want the exact equations for inductance, capacitance, etc, look in the ARRL Antenna Book.
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