Method of remote powering and detecting multiple UWB passive tags in an RFID system
First Claim
1. A Radio Frequency Identification (RFID) method, comprising:
- remotely powering one or more tags using an ultra-wideband format so as to activate said one or more tags,transmitting one or more uniquely coded ultra-wideband interrogation signals so as to configure such tags to be on an awakened status to generate a respective response code within each of said alerted one or more tags; and
receiving modulated ultra-wideband radar signals indicative of said response codes so that said one or more tags are detected.
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Abstract
A new Radio Frequency Identification (RFID), tracking, powering apparatus/system and method using coded Ultra-wideband (UWB) signaling is introduced. The proposed hardware and techniques disclosed herein utilize a plurality of passive UWB transponders in a field of an RFID-radar system. The radar system itself enables multiple passive tags to be remotely powered (activated) at about the same time frame via predetermined frequency UWB pulsed formats. Once such tags are in an activated state, an UWB radar transmits specific “interrogating codes” to put predetermined tags in an awakened status. Such predetermined tags can then communicate by a unique “response code” so as to be detected by an UWB system using radar methods.
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Citations
28 Claims
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1. A Radio Frequency Identification (RFID) method, comprising:
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remotely powering one or more tags using an ultra-wideband format so as to activate said one or more tags, transmitting one or more uniquely coded ultra-wideband interrogation signals so as to configure such tags to be on an awakened status to generate a respective response code within each of said alerted one or more tags; and receiving modulated ultra-wideband radar signals indicative of said response codes so that said one or more tags are detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A Radio Frequency Identification (RFID) ultra-wideband system, comprising:
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one or more passively configured tags, an ultra-wideband transceiver configured to generate high-peak power ultra-wideband pulses so as to remotely activate said one or more tags, said transceiver being further configured to initiate a unique response code within said one or more activated tags upon subsequent interrogation using ultra-wideband pulsed formats; and means configured within said activated one or more tags to radar modulate predetermined ultra-wideband pulsed formats directed from said transceiver. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An ultra-wideband (UWB) Radio Frequency Identification (RFID) system, comprising:
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one or more tags configured in a passive state, an ultra-wideband high peak power burst generator configured to activate said one or more tags using ultra-wideband high peak power pulses, an ultra-wideband transmitter adapted to interrogate said activated one or more tags using ultra-wideband pulsed formats so as to awaken predetermined one or more tags and initiate a unique response code, one or more ultra-wideband receivers configured to receive modulated interrogation ultra-wideband signals resulting from said initiated unique response codes directed from said awakened tags; and processing means coupled to said ultra-wideband receiver for correlation, range determination, and for distinguishing said modulated interrogation ultra-wideband signals received from said awakened one or more tags. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification