Abstract: An RFID system (200) includes an RFID reader (202), an antenna array (204) and a length compensation unit (215). The RFID reader (202) is configured to interrogate RFID antennas. The antenna array (204) includes two or more RFID antennas (206) connectable to the RFID reader (202) via a series of cable links (208). Each RFID antenna (206) is associated with a respective cable link (208), and each cable link (208) has a cable length. The length compensation unit (215) is associated with each RFID antenna (206), and is configured to adjust a total cable length between the RFID reader (202) and a respective RFID antenna (206) to be an effective cable length.

Abstract: Described is an antenna comprising two oppositely wound antenna coils, each antenna coil formed by concentric conductor coils. An outermost conductor coil of one antenna coil is conductively connected to an outermost conductor coil of the other antenna coil via a shared conductive portion. An innermost conductor coil of each antenna coil terminates in a bridge connector, and a bridge conductively links the bridge connectors.

Abstract: An inventory control system for controlling inventory in a receptacle comprising a plurality of compartments, comprising an electronic reader, at least one antenna, a controller, and a processor. The electronic reader is configured to read a plurality of electronic labels in a plurality of the compartments of the receptacle, each electronic label being associated with, and identifying, an item in one of the compartments. The at least one antenna is in communication with the electronic reader, associated with two or more compartments and configured to read electronic labels in the two or more compartments so that the electronic reader identifies a group of labels associated therewith. The controller controls access to a selected one of the compartments at a time. The processor is responsive to the group of labels and the selected one of the compartments to determine the contents thereof and a compartment location of each item.

Abstract: Described is an antenna comprising two oppositely wound antenna coils, each antenna coil formed by concentric conductor coils. An outermost conductor coil of one antenna coil is conductively connected to an outermost conductor coil of the other antenna coil via a shared conductive portion. An innermost conductor coil of each antenna coil terminates in a bridge connector, and a bridge conductively links the bridge connectors.

Abstract: An RFID antenna comprises two or more electroconductive sheets of uniform planar size, being parallel and aligned, with a space therein between. Each electroconductive sheet comprises: a feed connection point, which receives an electrical current from a feed to supply current to the electroconductive sheet; and a return connection point, opposite and parallel to the feed connection point of the electroconductive sheet, which acquires current from the electroconductive sheet and transfers current to a return. The electrical circuit pathway created from the feed to the return is equal distance for each electroconductive sheet. The two electroconductive sheets are connected together to complete a circuit that causes direction of electrical flow in the one electroconductive sheet to be opposite to direction of electric flow in the other electroconductive sheet.

Abstract: An inventory control system for controlling inventory in a receptacle comprising a plurality of compartments, comprising an electronic reader, at least one antenna, a controller, and a processor. The electronic reader is configured to read a plurality of electronic labels in a plurality of the compartments of the receptacle, each electronic label being associated with, and identifying, an item in one of the compartments. The at least one antenna is in communication with the electronic reader, associated with two or more compartments and configured to read electronic labels in the two or more compartments so that the electronic reader identifies a group of labels associated therewith. The controller controls access to a selected one of the compartments at a time. The processor is responsive to the group of labels and the selected one of the compartments to determine the contents thereof and a compartment location of each item.

Abstract: An RFID antenna comprises two or more electroconductive sheets of uniform planar size, being parallel and aligned, with a space therein between. Each electroconductive sheet comprises: a feed connection point, which receives an electrical current from a feed to supply current to the electroconductive sheet; and a return connection point, opposite and parallel to the feed connection point of the electroconductive sheet, which acquires current from the electroconductive sheet and transfers current to a return. The electrical circuit pathway created from the feed to the return is equal distance for each electroconductive sheet. The two electroconductive sheets are connected together to complete a circuit that causes direction of electrical flow in the one electroconductive sheet to be opposite to direction of electric flow in the other electroconductive sheet.