Method of remote powering and detecting multiple UWB passive tags in an RFID system
First Claim
1. An ultra-wideband (UWB) Radio Frequency Identification (RFID) system, comprising:
- 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 uniquely coded tag specific 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 each 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.
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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.
17 Citations
9 Claims
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1. 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 uniquely coded tag specific 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 each 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 (2, 3, 4, 5, 6, 7, 8, 9)
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Specification