Amtech Systems, Incorporated

Michael Paul Gonzales

Kelly Gravelle

Michael Melville

Joseph H Kao

Jeremy Landt

A system and method are disclosed for synchronizing two RFID readers. The system includes a modulation detector to detect a modulated signal produced by a first of the two reader and produces a synchronization signal. The second of the two readers initiates transmission of a signal in response to the synchronization signal.

System and method for synchronizing RFID readers utilizing RF or modulation signals

A system for measuring the range to an RFID tag including situations containing high clutter and multi-path signals is disclosed. The system includes an RFID reader; an RFID tag; and a coordinated pulse radar system. In the system the RFID reader causes the tag to respond to received signals in a first backscatter state at a first time and a second backscatter state at a second time. The pulsed radar system transmits short pulses coordinated by the backscatter state of the RFID tag and the system creates a differential signal comprised of the differences between radar signals obtained during the first and second states of the tag to obtain an uncorrupted measure of a round trip time of flight of said radar pulses between the pulse radar system and the RFID tag.

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Albuquerque, NM, United States of America

Michael Paul Gonzales