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#1 2011-06-28 00:40:48

spookyman166
Member
Registered: 2011-06-20
Posts: 15

Antenna's

Hi there, im intrested in the antennas for the proxmark.

I read that there is a difference in length if the C35 value is 47pf or 100pf.

Can someone please explain how i can calculate the different lengths/turns needed?


I want to make a pcb antenna. 
ALSO If you want to see the proxmark3 on seeedstudio
then email them requesting it

The more people that the, the higher the chance that they include it. Im sure that they can get the price to be around $150ish USD INCLUDING international shipping!!!!

post here if you requested!! or know how the antenna conundrum works?

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#2 2011-06-28 14:18:16

carl55
Contributor
From: Arizona USA
Registered: 2010-07-04
Posts: 175

Re: Antenna's

I have found that the Electronics Calculators provided on the following website to be very helpful when working with RFID antennas.

http://www.pronine.ca/links.htm

I always use the "LC Tuned Circuit Calculator" to calculate the capacitance or inductance for specific frequency antenna circuit and the "Multilayer Air Core Inductor Calculator" to calculate the number of turns required for building wire a loop antenna.

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