RADIO FREQUENCY IDENTIFICATION TAG
    12.
    发明申请

    公开(公告)号:US20180068214A1

    公开(公告)日:2018-03-08

    申请号:US15561211

    申请日:2016-03-17

    Abstract: Radio frequency identification (RFID) tags are described that include a substrate, an antenna disposed on a major surface of the substrate, an integrated circuit (IC) disposed on a major surface of the substrate, and one or more stand-alone capacitors disposed on a major surface of the substrate. The antenna may have a length less than about 2 meters between first and second ends of the antenna. The integrated circuit may have an effective capacitance less than about 1000 pF and the one or more stand-alone capacitors may have an equivalent capacitance greater than 500 pF and may be connected in parallel with the antenna and the IC

    Wireless authentication systems
    16.
    发明授权

    公开(公告)号:US11778465B2

    公开(公告)日:2023-10-03

    申请号:US16614548

    申请日:2018-06-20

    Abstract: Embodiments include wireless authentication devices, systems, and methods. A wireless authentication system can include an active wireless communication device including a first memory, first processing circuitry, and a first antenna, the first processing circuitry to produce an identifier request for an identifier (ID) and cause the first antenna to transmit the identifier request, receive the ID in a response to the identifier request, identify, based on the ID and data in the first memory, a location of a second memory to access, and produce an access request for the identified location of the second memory and cause the first antenna to transmit the access request. The system can further include a passive wireless communication device comprising a second memory, second processing circuitry, a second antenna, and a power harvesting circuitry to convert electromagnetic power incident on the second antenna to electrical power for the second memory and the second processing circuitry, the second processing circuitry to produce the response to the identifier request, the response including the ID, and cause the second antenna to produce the response, receive the access request, retrieve data from or write data to the identified location of the second memory based on the access request, and cause the second antenna to transmit the response to the access request.

    Shielded RFID antenna
    19.
    发明授权

    公开(公告)号:US10971808B2

    公开(公告)日:2021-04-06

    申请号:US16309186

    申请日:2017-06-14

    Abstract: A shielded antenna (100) includes a spiral antenna (110) and a shield (120) disposed on the spiral antenna. The spiral antenna comprises a plurality of substantially concentric loops. The shield comprises a plurality of electrically isolated electrically conductive segments forming a regular pattern, such that in a top plan view, at least one segment overlaps a portion of at least two loops, and at least one pair of adjacent conductive segments defines an electrically insulative gap therebetween.

    WIRELESS SENSING SYSTEM USING SENSING DEVICE WITH EXCITATION ELEMENT

    公开(公告)号:US20210088387A1

    公开(公告)日:2021-03-25

    申请号:US16949913

    申请日:2020-11-20

    Abstract: At least some aspects of the present disclosure feature a mobile sensing system comprising a sensing device for measuring a thermal property of an object, comprising an RF circuit and an antenna electronically coupled to the RF circuit, a sensor electronically coupled to the RF circuit, and a thermal source thermally coupled to the sensor and electronically coupled to the RF circuit, a mobile device having a processor, an RF reader connected to or integrated with the mobile device, wherein the RF reader is configured to interrogate the sensing device; wherein the sensing device receives power when the RF reader interrogates the sensing device and provides at least a portion of the power to the thermal source.

Patent Agency Ranking