User's Manual

14/07/16 Page 14 of 18
ABR200 Integration Manual
7 Connecting the antenna
The antenna has to be connected between pin 1 and pin 2 of the terminal on the right side.
The ABR200 comes with the on-board resonant circuit capacitors tuned for antennas with an
inductance of 275µH. That means you cannot use antennas with a higher inductance at all. If your
antenna has a smaller inductance than 275µH – maybe because you have an air-coil antenna –
you can add more capacitance between pin 2 and pin 3 as shown in the diagram above. The
capacitors might be soldered to you PCB during production as fixed values or you can set them
using jumpers like shown in this example.
However, tuning the circuit to resonance is always necessary in order to achieve the optimum
reading performance. Please see the antenna tuning manual for further details.
For details concerning the location of antenna and module, please refer to the separate document
“ABR200_AN_Location_Antenna-Module_eng”.