an RFID antenna configured to be positioned on a module of a processing system, wherein the module is configured to engage at least one container;
a first RFID tag configured to be positioned on the at least one container, wherein the at least one container is configured to position the first RFID tag within a detection zone of the RFID antenna whenever the module engages the at least one container; and
an L-C tank circuit configured to be coupled by mutual inductance to the RFID antenna and configured to focus at least a portion of the magnetic field produced by the RFID antenna.