RFID SYSTEM WITH INTEGRATED SWITCHED ANTENNA ARRAY AND MULTIPLEXER ELECTRONICS
First Claim
1. A device for use in an RFID detection system, the device comprising:
- an antenna array having one or more antennas for detecting the presence of one or more tagged items in an interrogation zone;
a multiplexer coupled to the antenna array, the antenna array and the multiplexer being provided on a substrate; and
electronics for facilitating communication between the antenna array and the multiplexer.
4 Assignments
0 Petitions
Accused Products
Abstract
An RFID detection system for determining the location of tagged items within an interrogation zone. The system includes one or more printed circuit boards coupled to each other and placed within a region of the interrogation zone. Each printed circuit board contains an antenna array having one or more antennas where each antenna detects the presence of one or more tagged items within a specific read zone in the region. The printed circuit board also contains a multiplexer coupled to the antenna array, where the antenna array and the multiplexer are provided on a substrate. Upon an interrogation request from an RFID reader, a specific antenna can be activated and selected by the multiplexer and tagged items within the antenna'"'"'s read zone are interrogated. RF signals containing RF identification information are then transmitted back to the RFID reader where a host computer interprets the signals and determines the location of the identified tagged items.
41 Citations
23 Claims
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1. A device for use in an RFID detection system, the device comprising:
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an antenna array having one or more antennas for detecting the presence of one or more tagged items in an interrogation zone; a multiplexer coupled to the antenna array, the antenna array and the multiplexer being provided on a substrate; and electronics for facilitating communication between the antenna array and the multiplexer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An RFID inventory system comprising:
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one or more devices for determining the existence of tagged items in an interrogation zone, each device comprising; an antenna array having one or more antennas, each antenna detecting the presence of one or more tagged items within a specific region of the interrogation zone; a multiplexer coupled to the antenna array, the antenna array and the multiplexer being provided on a substrate; and electronics for facilitating communication between the antenna array and the multiplexer; an RFID reader for receiving RF signals from the one or more devices, the RF signals including information related to the existence of the one or more tagged items; and a computer for interpreting data corresponding to the RF signals received by the RFID reader. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A shelf reader system for determining the location of tagged items in a predetermined area, the system comprising;
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one or more devices positioned within the predetermined area, each device comprising; an antenna array having one or more antennas, wherein each antenna detects the presence of one or more tagged items within a specific region of the predetermined area; a multiplexer coupled to the antenna array, the antenna array and the multiplexer being provided on a substrate; and electronics for facilitating communication between the antenna array and the multiplexer; an RFID reader for receiving RF signals from the one or more devices, the signals including information related to the presence of the one or more tagged items; and a computer for interpreting the RF signals received by the RFID reader. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification