RFID antenna design

Discussion in 'General Electronics Chat' started by eng_alaakaa, Oct 20, 2011.

  1. eng_alaakaa

    Thread Starter New Member

    Sep 21, 2011
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    I'm working on RFID project . and I want to design the reader antenna at 13.56MHz to transmit and read at maximum range 1.5 m to passive tags .

    if someone can provide me with proper equations to calculate inductance of the coil to be 0.225μH .:)
     
  2. Bernard

    AAC Fanatic!

    Aug 7, 2008
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    A single layer coil, length,l, & radius,r, N, no of turns,. can be calculated: L=[ rN ]squared /9r +10l. If r=.75, l=.1, N=2, then L about .29 uH. Spreading turns will reduce L. Allied Radio 1960
     
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  3. eng_alaakaa

    Thread Starter New Member

    Sep 21, 2011
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    0
    thank you Bernard.
    but what's the unit of l & r .
    and can you provide me with any useful links.
     
  4. Bernard

    AAC Fanatic!

    Aug 7, 2008
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    Sorry- it is inches. I'll try to post page-best I can do.
     
  5. bertus

    Administrator

    Apr 5, 2008
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