Systems and methods to selectively connect antennas to receive and backscatter radio frequency signals

    公开(公告)号:US10311261B2

    公开(公告)日:2019-06-04

    申请号:US15583883

    申请日:2017-05-01

    Inventor: John R. Tuttle

    Abstract: Systems and methods to selectively attach and control antennas via diodes. In one embodiment, a system includes: a reader having a plurality of reader antennas of different polarizations to transmit radio frequency signals; and at least one radio frequency device. The radio frequency device includes: a plurality of tag antennas of different polarizations; a plurality of diodes coupled to the plurality of tag antennas respectively; a receiver coupled to the plurality of diodes to receive the radio frequency signals from the tag antennas when the diodes are forward biased; and a set of one or more current controllers coupled to the plurality of diodes. In a receiving mode the controllers selectively forward bias the diodes to receive the signals from the reader. In a transmitting mode the controllers selectively change the state of the tag antennas to transmit data via backscattering the radio frequency signals.

    Systems and methods to determine kinematical parameters using RFID tags

    公开(公告)号:US10162992B2

    公开(公告)日:2018-12-25

    申请号:US15598199

    申请日:2017-05-17

    Inventor: John R. Tuttle

    Abstract: Systems and methods to determine kinematical parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, one of a population of RFID tags is selectively instructed by an RFID reader to backscatter the interrogating electromagnetic wave and thus allow the RFID reader to measure the position, speed, acceleration, and/or jerk of the object to which the tag is attached. The RFID reader combines the signal representing the backscattered interrogating electromagnetic wave and the signal representing the interrogating electromagnetic wave transmitted by the RFID reader to determine or monitor one or more of the kinematical parameters of the object.

    SYSTEMS AND METHODS TO USE RADAR IN RFID SYSTEMS
    24.
    发明申请
    SYSTEMS AND METHODS TO USE RADAR IN RFID SYSTEMS 审中-公开
    RFID系统中使用雷达的系统和方法

    公开(公告)号:US20160363662A1

    公开(公告)日:2016-12-15

    申请号:US14454546

    申请日:2014-08-07

    Inventor: John R. Tuttle

    Abstract: Systems and methods to use radar systems for radio frequency identification (RFID) applications. In one embodiment, radar systems are adapted to use RFID communications protocols and methods to enhance the usefulness of radar systems beyond the determination of the presence, distance, direction and/or speed of a vehicle or object, to additionally include the transmission of data such as object identification and additional messages or data.

    Abstract translation: 雷达系统用于射频识别(RFID)应用的系统和方法。 在一个实施例中,雷达系统适于使用RFID通信协议和方法来增强雷达系统在确定车辆或物体的存在,距离,方向和/或速度之外的有用性,另外包括数据传输 作为对象标识和附加消息或数据。

    Systems and Methods to Determine Kinematical Parameters

    公开(公告)号:US20190095661A1

    公开(公告)日:2019-03-28

    申请号:US16201704

    申请日:2018-11-27

    Inventor: John R. Tuttle

    CPC classification number: G06K7/10316 G06K7/10009 H04Q9/00 H04Q2209/47

    Abstract: Systems and methods to determine kinematical parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, one of a population of RFID tags is selectively instructed by an RFID reader to backscatter the interrogating electromagnetic wave and thus allow the RFID reader to measure the position, speed, acceleration, and/or jerk of the object to which the tag is attached. The RFID reader combines the signal representing the backscattered interrogating electromagnetic wave and the signal representing the interrogating electromagnetic wave transmitted by the RFID reader to determine or monitor one or more of the kinematical parameters of the object.

    Systems and Methods to Determine Kinematical Parameters using RFID Tags

    公开(公告)号:US20170262669A1

    公开(公告)日:2017-09-14

    申请号:US15598199

    申请日:2017-05-17

    Inventor: John R. Tuttle

    CPC classification number: G06K7/10316 G06K7/10009 H04Q9/00 H04Q2209/47

    Abstract: Systems and methods to determine kinematical parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, one of a population of RFID tags is selectively instructed by an RFID reader to backscatter the interrogating electromagnetic wave and thus allow the RFID reader to measure the position, speed, acceleration, and/or jerk of the object to which the tag is attached. The RFID reader combines the signal representing the backscattered interrogating electromagnetic wave and the signal representing the interrogating electromagnetic wave transmitted by the RFID reader to determine or monitor one or more of the kinematical parameters of the object.

    Systems and methods to selectively connect antennas to receive and backscatter radio frequency signals

    公开(公告)号:US09652645B2

    公开(公告)日:2017-05-16

    申请号:US14618709

    申请日:2015-02-10

    Inventor: John R. Tuttle

    CPC classification number: H01Q1/2208 G06K7/10316 G06K19/0723 G06K19/07773

    Abstract: Systems and methods to selectively attach and control antennas via diodes. In one embodiment, a system includes: a reader having a plurality of reader antennas of different polarizations to transmit radio frequency signals; and at least one radio frequency device. The radio frequency device includes: a plurality of tag antennas of different polarizations; a plurality of diodes coupled to the plurality of tag antennas respectively; a receiver coupled to the plurality of diodes to receive the radio frequency signals from the tag antennas when the diodes are forward biased; and a set of one or more current controllers coupled to the plurality of diodes. In a receiving mode the controllers selectively forward bias the diodes to receive the signals from the reader. In a transmitting mode the controllers selectively change the state of the tag antennas to transmit data via backscattering the radio frequency signals.

    SYSTEMS AND METHODS TO DETERMINE MOTION PARAMETERS USING RFID TAGS
    29.
    发明申请
    SYSTEMS AND METHODS TO DETERMINE MOTION PARAMETERS USING RFID TAGS 审中-公开
    使用RFID标签确定运动参数的系统和方法

    公开(公告)号:US20170032157A1

    公开(公告)日:2017-02-02

    申请号:US15295103

    申请日:2016-10-17

    Inventor: John R. Tuttle

    Abstract: Systems and methods to determine motion parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, a method implemented in a radio frequency identification (RFID) system includes determining a motion parameter of the RFID tag based on detecting a Doppler frequency shift in a radio frequency signal received from the RFID tag.

    Abstract translation: 使用附在对象上的射频识别(RFID)标签来确定物理对象的运动参数的系统和方法。 在一个实施例中,在射频识别(RFID)系统中实现的方法包括基于从RFID标签接收的射频信号中检测多普勒频移来确定RFID标签的运动参数。

    Systems and methods to determine motion parameters using RFID tags
    30.
    发明授权
    Systems and methods to determine motion parameters using RFID tags 有权
    使用RFID标签确定运动参数的系统和方法

    公开(公告)号:US09477863B2

    公开(公告)日:2016-10-25

    申请号:US14132482

    申请日:2013-12-18

    Inventor: John R. Tuttle

    Abstract: Systems and methods to determine motion parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, a method implemented in a radio frequency identification (RFID) system includes determining a motion parameter of the RFID tag based on detecting a Doppler frequency shift in a radio frequency signal received from the RFID tag.

    Abstract translation: 使用附在对象上的射频识别(RFID)标签来确定物理对象的运动参数的系统和方法。 在一个实施例中,在射频识别(RFID)系统中实现的方法包括基于从RFID标签接收的射频信号中检测多普勒频移来确定RFID标签的运动参数。

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