Antenna size of 13.56MHz module

End-Of-Life Products & Services Tech support before 2012
#1

Hello,

I’d like to know what size the antenna has that comes with the 13.56MHz RFID module (RFR105A1M)? I read in the accompanying RDM880 document that the acceptable antenna sizes are:
2040mm
4955mm
4071mm
6590mm
155*166mm(special, required customized)

If the included antenna is not the largest size, where can I find instructions on how to build the largest size antenna that will work with this module? All under the assumption that larger antenna = larger range.

Thanks, Christoph

#2

The size of antenna on the 13.56MHz RFID module is 65*90mm.
I’d like to tell you the larger range depend on not only the larger antenna , but also the match circuit.