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公开(公告)号：US10734727B2
公开(公告)日：2020-08-04
申请号：US16119365
申请日：2018-08-31
申请人： RFMicron, Inc.
摘要： A radio frequency identification (RFID) tag includes a power harvesting circuit, an RF front-end, and a processing module. The power harvesting circuit generates power for the RFID tag from a continuous wave of an inbound radio frequency (RF) signal. The RF front-end receives the inbound RF signal and transmits an outbound RF signal. The RF front-end includes a tuning circuit that is tuned based on a capacitance setting. The tuning of the tuning circuit effects a characteristic of the RF front-end. The processing module generate the capacitance setting to adjust the characteristic of the RF front-end to a desired characteristic.
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公开(公告)号：US20170201004A1
公开(公告)日：2017-07-13
申请号：US15470512
申请日：2017-03-27
申请人： RFMicron, Inc.
发明人： Shahriar Rokhsaz , Brian David Young , Ahmed Younis , John J. Paulos , Abhay Misra , Benjamin Cooke , Marwan Hassoun
IPC分类号： H01Q1/22 , G06K19/077 , H01Q5/335
CPC分类号： H01Q1/2225 , G06K7/10148 , G06K7/10326 , G06K19/0716 , G06K19/0717 , G06K19/0726 , G06K19/07788 , H01Q5/335
摘要： A wireless sensor includes an antenna, a sensing element, a tuning circuit, a processing module, a reference circuit block, and a transmitter. The tuning circuit adjusts the RF front-end to compensation for a change in a characteristic of the RF front end caused by the sensing element. The reference circuit block generates a signal based on a low voltage low frequency input that corresponds to a second environmental condition. The processing module generates a first digital value based on the adjustment to the RF front-end, where the first digital value is a representation of the first environmental condition, and generate a second digital value based on the signal, where the second digital value is a representation of the second environmental condition. The transmitter generates the outbound RF signal that includes at least one of the first and second digital values.
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公开(公告)号：US11817637B2
公开(公告)日：2023-11-14
申请号：US17555244
申请日：2021-12-17
申请人： RFMicron, Inc.
CPC分类号： H01Q9/0442 , H01Q9/04 , G06K19/0717 , G08B21/20
摘要： A radio frequency identification (RFID) tag includes a power harvesting circuit that operates generate power for the RFID tag from a continuous wave of a radio frequency (RF) signal. The RFID tag further includes a tuning circuit that is tuned based on a capacitance setting, where the capacitance setting is indicative of a power level of the power. The RFID tag further includes a processing module operably coupled to the tuning circuit, where the processing module operates to generate the capacitance setting to obtain a desired power level for the power.
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公开(公告)号：US10243255B2
公开(公告)日：2019-03-26
申请号：US15686994
申请日：2017-08-25
申请人： RFMicron, Inc.
发明人： Shahriar Rokhsaz , Brian David Young , Ahmed Younis , John J. Paulos , Abhay Misra , Benjamin Cooke , Marwan Hassoun
IPC分类号： H01Q1/22 , G06K7/10 , G06K19/07 , H01Q5/335 , G06K19/077
摘要： A method begins by a first radio frequency identification (RFID) sensor, that is associated with a first object element, receiving a first data request signal from an RFID reader and sending a first radio frequency (RF) signal that includes first data to the RFID reader in response to the first data request signal. The method continues with a second RFID sensor receiving a second data request signal from, and sending second data to, the RFID reader. The method continues with the RFID reader sending a representation of the first and second data to a data processing unit, which processes the representation of the first and second data to determine a first and second data point regarding first and second object elements. The method continues by the data processing unit processing the first and second data points to determine an environmental relationship between the first and second object elements.
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公开(公告)号：US20160352214A1
公开(公告)日：2016-12-01
申请号：US15154510
申请日：2016-05-13
申请人： RFMicron, Inc.
CPC分类号： H02M7/06 , H02M2001/0006
摘要： A power harvesting circuit, a rectifier circuit and a capacitor. The rectifier circuit includes a diode circuit, a diode voltage reduction circuit, and a start up current circuit. The diode circuit passes a current when a received RF signal has a first polarity and to substantially blocks the current when the received RF signal has a second polarity. The diode voltage reduction circuit is operably coupled to reduce a voltage drop of the diode circuit. The start up current circuit operably coupled to reduce the start up current of the diode voltage reduction circuit and/or the diode circuit. The capacitor is operably coupled to convert the rectified signal into a DC supply voltage.
摘要翻译： 电力收集电路，整流电路和电容器。 整流电路包括二极管电路，二极管降压电路和启动电流电路。 当接收的RF信号具有第一极性时，二极管电路通过电流，并且当接收的RF信号具有第二极性时，二极管电路基本上阻塞电流。 二极管降压电路可操作地耦合以减小二极管电路的电压降。 启动电流电路可操作地耦合以减小二极管降压电路和/或二极管电路的启动电流。 电容器可操作地耦合以将整流信号转换成直流电源电压。
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公开(公告)号：US20230307841A9
公开(公告)日：2023-09-28
申请号：US17555244
申请日：2021-12-17
申请人： RFMicron, Inc.
IPC分类号： H01Q9/04
CPC分类号： H01Q9/0442 , H01Q9/04 , G08B21/20
摘要： A radio frequency identification (RFID) tag includes a power harvesting circuit that operates generate power for the RFID tag from a continuous wave of a radio frequency (RF) signal. The RFID tag further includes a tuning circuit that is tuned based on a capacitance setting, where the capacitance setting is indicative of a power level of the power. The RFID tag further includes a processing module operably coupled to the tuning circuit, where the processing module operates to generate the capacitance setting to obtain a desired power level for the power.
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7.发明申请公开(公告)号：US20190097323A1
公开(公告)日：2019-03-28
申请号：US16119365
申请日：2018-08-31
申请人： RFMicron, Inc.
IPC分类号： H01Q9/04 , A61B5/00 , G06K19/07 , G08B21/20 , G01N27/22 , A61F13/42 , G06K19/077 , G01N27/04
摘要： A radio frequency identification (RFID) tag includes a power harvesting circuit, an RF front-end, and a processing module. The power harvesting circuit generates power for the RFID tag from a continuous wave of an inbound radio frequency (RF) signal. The RF front-end receives the inbound RF signal and transmits an outbound RF signal. The RF front-end includes a tuning circuit that is tuned based on a capacitance setting. The tuning of the tuning circuit effects a characteristic of the RF front-end. The processing module generate the capacitance setting to adjust the characteristic of the RF front-end to a desired characteristic.
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公开(公告)号：US10243479B2
公开(公告)日：2019-03-26
申请号：US15707625
申请日：2017-09-18
申请人： RFMicron, Inc.
摘要： A power harvesting circuit, a rectifier circuit and a capacitor. The rectifier circuit includes a diode circuit and a diode voltage reduction circuit. The diode circuit passes a current when a received RF signal has a first polarity and to substantially blocks the current when the received RF signal has a second polarity. The diode voltage reduction circuit is operably coupled to reduce a voltage drop of the diode circuit. The capacitor is operably coupled to convert the rectified signal into a DC supply voltage.
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公开(公告)号：US20180006572A1
公开(公告)日：2018-01-04
申请号：US15707625
申请日：2017-09-18
申请人： RFMicron, Inc.
CPC分类号： H02M7/06 , H02M2001/0006
摘要： A power harvesting circuit, a rectifier circuit and a capacitor. The rectifier circuit includes a diode circuit and a diode voltage reduction circuit. The diode circuit passes a current when a received RF signal has a first polarity and to substantially blocks the current when the received RF signal has a second polarity. The diode voltage reduction circuit is operably coupled to reduce a voltage drop of the diode circuit. The capacitor is operably coupled to convert the rectified signal into a DC supply voltage.
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公开(公告)号：US09748632B2
公开(公告)日：2017-08-29
申请号：US15470512
申请日：2017-03-27
申请人： RFMicron, Inc.
发明人： Shahriar Rokhsaz , Brian David Young , Ahmed Younis , John J. Paulos , Abhay Misra , Benjamin Cooke , Marwan Hassoun
IPC分类号： H01Q1/22 , H01Q5/335 , G06K19/077
CPC分类号： H01Q1/2225 , G06K7/10148 , G06K7/10326 , G06K19/0716 , G06K19/0717 , G06K19/0726 , G06K19/07788 , H01Q5/335
摘要： A wireless sensor includes an antenna, a sensing element, a tuning circuit, a processing module, a reference circuit block, and a transmitter. The tuning circuit adjusts the RF front-end to compensation for a change in a characteristic of the RF front end caused by the sensing element. The reference circuit block generates a signal based on a low voltage low frequency input that corresponds to a second environmental condition. The processing module generates a first digital value based on the adjustment to the RF front-end, where the first digital value is a representation of the first environmental condition, and generate a second digital value based on the signal, where the second digital value is a representation of the second environmental condition. The transmitter generates the outbound RF signal that includes at least one of the first and second digital values.
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