公开(公告)号：US12095169B2

公开(公告)日：2024-09-17

申请号：US17218302

申请日：2021-03-31

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Benjamin J. Bekritsky ,  Michael J. Koch ,  Alexander M. Jacques

IPC: H01Q3/26 ,  G06K7/10 ,  H04B7/06 ,  H04B17/12 ,  H04B17/17

CPC classification number: H01Q3/267 ,  G06K7/10346 ,  G06K7/10475 ,  H04B7/0617 ,  H04B17/12 ,  H04B17/17

Abstract: Systems and methods for enhanced fault tolerance for a radio frequency identification (RFID) phased array antenna are provided. The systems include a RFID reader that includes (i) a phased array antenna having N antenna elements; and (ii) a controller operatively connected to the phased array antenna. The controller is configured to (1) monitor a characteristic for each antenna element of a set of the N antenna elements; (2) based on the characteristic, detect a fault of a faulty antenna element of the set of the N antenna elements; and (3) responsive to detecting the fault of the faulty antenna element of the set of the N antenna elements, adjust a parameter of at least one other antenna element of the N antenna elements, wherein the parameter is a weight applied to a signal that is transmitted to or received at an antenna element.

公开(公告)号：US20210192156A1

公开(公告)日：2021-06-24

申请号：US16723972

申请日：2019-12-20

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Michael J. Koch ,  Alexander M. Jacques ,  Camilo A. Gaitan Parra

IPC: G06K7/10 ,  H01Q3/36 ,  H01Q21/29 ,  G06K7/00

Abstract: Methods and devices for performing dynamic compensation of a phased array RFID reader are disclosed herein. An example method includes configuring an RFID reader having an antenna array to compensate for determined antenna element phase-shift errors. The method includes exciting a reference antenna element of the antenna array, emitting an emitted signal, receiving the emitted signal via a receiver antenna element of the antenna array, and generating a received signal. The method further includes determining, by a processor, a phase shift of the received signal relative to the emitted signal, and determining a phase-shift error. The method then includes configuring the RFID reader to compensate for the determined phase-shift error associated with the receiver antenna element in response to receiving an RFID tag signal.

公开(公告)号：US11210480B2

公开(公告)日：2021-12-28

申请号：US16723972

申请日：2019-12-20

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Michael J Koch ,  Alexander M. Jacques ,  Camilo A. Gaitan Parra

IPC: G06K7/00 ,  G06K7/10 ,  H01Q3/36 ,  H01Q21/29

Abstract: Methods and devices for performing dynamic compensation of a phased array RFID reader are disclosed herein. An example method includes configuring an RFID reader having an antenna array to compensate for determined antenna element phase-shift errors. The method includes exciting a reference antenna element of the antenna array, emitting an emitted signal, receiving the emitted signal via a receiver antenna element of the antenna array, and generating a received signal. The method further includes determining, by a processor, a phase shift of the received signal relative to the emitted signal, and determining a phase-shift error. The method then includes configuring the RFID reader to compensate for the determined phase-shift error associated with the receiver antenna element in response to receiving an RFID tag signal.

公开(公告)号：US20220320710A1

公开(公告)日：2022-10-06

申请号：US17218302

申请日：2021-03-31

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Benjamin J. Bekritsky ,  Michael J. Koch ,  Alexander M. Jacques

IPC: H01Q1/22 ,  H04B17/17 ,  H01Q21/24 ,  H04B7/06 ,  H04B7/0456

Abstract: Systems and methods for enhanced fault tolerance for a radio frequency identification (RFID) phased array antenna are provided. The systems include a RFID reader that includes (i) a phased array antenna having N antenna elements; and (ii) a controller operatively connected to the phased array antenna. The controller is configured to (1) monitor a characteristic for each antenna element of a set of the N antenna elements; (2) based on the characteristic, detect a fault of a faulty antenna element of the set of the N antenna elements; and (3) responsive to detecting the fault of the faulty antenna element of the set of the N antenna elements, adjust a parameter of at least one other antenna element of the N antenna elements, wherein the parameter is a weight applied to a signal that is transmitted to or received at an antenna element.