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公开(公告)号：US11675044B2
公开(公告)日：2023-06-13
申请号：US17227916
申请日：2021-04-12
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Michael J. Koch , Benjamin J. Bekritsky , Charles Burton Swope
CPC classification number: G01S7/021 , G01S13/75 , G01S13/767 , G01S13/876 , G01S13/878
Abstract: At least some embodiments of the present invention are directed to RFID reader systems configured to estimate a directional bearing of an RFID tag. In an embodiment, the present invention is an RFID system configured in a way that upon a detection of a variance in the direction of a maximum RSSI value for a given RFID tag in response to a plurality of interrogation signals transmitted by an RFID reader over a respective plurality of different directions, the RFID reader retransmits the plurality of interrogation signals over the respective plurality of different directions with successively lower power levels until the only response(s) being received no longer exhibit the previously detected variance.
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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.
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公开(公告)号：US10976408B2
公开(公告)日：2021-04-13
申请号：US16235835
申请日：2018-12-28
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Michael J. Koch , Benjamin J. Bekritsky , Charles Burton Swope
Abstract: At least some embodiments of the present invention are directed to RFID reader systems configured to estimate a directional bearing of an RFID tag. In an embodiment, the present invention is an RFID system configured in a way that upon a detection of a variance in the direction of a maximum RSSI value for a given RFID tag in response to a plurality of interrogation signals transmitted by an RFID reader over a respective plurality of different directions, the RFID reader retransmits the plurality of interrogation signals over the respective plurality of different directions with successively lower power levels until the only response(s) being received no longer exhibit the previously detected variance.
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Patent Agency Ranking
公开(公告)号：US10762310B2
公开(公告)日：2020-09-01
申请号：US16235651
申请日：2018-12-28
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Benjamin J. Bekritsky , Michael J. Koch , Charles Burton Swope
Abstract: At least some embodiments of the present invention are directed to RFID reader systems, readers, and/or arrangements configured to estimate a directional bearing of an RFID tag. In an embodiment, the present invention is an RFID arrangement configured communicate with an RFID tag via a primary transmit and receive signals and to contemporaneously determine a plurality of RSSI levels of the RFID tag over a 360-degree azimuth range via a plurality of secondary receive signals.
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公开(公告)号：US20200210656A1
公开(公告)日：2020-07-02
申请号：US16235651
申请日：2018-12-28
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Benjamin J. Bekritsky , Michael J. Koch , Charles Burton Swope
IPC: G06K7/10
Abstract: At least some embodiments of the present invention are directed to RFID reader systems, readers, and/or arrangements configured to estimate a directional bearing of an RFID tag. In an embodiment, the present invention is an RFID arrangement configured communicate with an RFID tag via a primary transmit and receive signals and to contemporaneously determine a plurality of RSSI levels of the RFID tag over a 360-degree azimuth range via a plurality of secondary receive signals.
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公开(公告)号：US20200209348A1
公开(公告)日：2020-07-02
申请号：US16235835
申请日：2018-12-28
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Michael J. Koch , Benjamin J. Bekritsky , Charles Burton Swope
Abstract: At least some embodiments of the present invention are directed to RFID reader systems configured to estimate a directional bearing of an RFID tag. In an embodiment, the present invention is an RFID system configured in a way that upon a detection of a variance in the direction of a maximum RSSI value for a given RFID tag in response to a plurality of interrogation signals transmitted by an RFID reader over a respective plurality of different directions, the RFID reader retransmits the plurality of interrogation signals over the respective plurality of different directions with successively lower power levels until the only response(s) being received no longer exhibit the previously detected variance.
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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
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.
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公开(公告)号：US20210231770A1
公开(公告)日：2021-07-29
申请号：US17227916
申请日：2021-04-12
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Michael J. Koch , Benjamin J. Bekritsky , Charles Burton Swope
Abstract: At least some embodiments of the present invention are directed to RFID reader systems configured to estimate a directional bearing of an RFID tag. In an embodiment, the present invention is an RFID system configured in a way that upon a detection of a variance in the direction of a maximum RSSI value for a given RFID tag in response to a plurality of interrogation signals transmitted by an RFID reader over a respective plurality of different directions, the RFID reader retransmits the plurality of interrogation signals over the respective plurality of different directions with successively lower power levels until the only response(s) being received no longer exhibit the previously detected variance.
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