A low frequency RFID antenna is a loop of wire that generates an oscillating magnetic field at 134.2 kHz.  This is done by attaching tuning capacitors to the inductive loop to form a resonant circuit.  The reader provides the energy to cause the antenna to oscillate.

It is important to control the amount of oscillation in the loop.  With very low resistance antenna wire the power levels can cause electronic components to overheat and even melt plastic parts on the circuit board.

Monitoring sites require many sizes of antennas with different geometries.  Customers are welcome to contact Oregon RFID for help building antennas.