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    LOW POWER RADIO-FREQUENCY LOCALIZATION
    2.
    发明申请
    LOW POWER RADIO-FREQUENCY LOCALIZATION 审中-公开

    公开(公告)号：US20200343940A1

    公开(公告)日：2020-10-29

    申请号：US16856643

    申请日：2020-04-23

    Applicant: Humatics Corporation

    Inventor： Gregory L. Charvat ,  Senter Reinhardt

    IPC: H04B3/52 ,  H04B1/48 ,  H04B3/54 ,  H01Q13/24 ,  G06K7/00

    Abstract: A device comprising: a receive antenna configured to receive radio-frequency (RF) signals having a first center frequency; a transmit antenna configured to transmit radio-frequency (RF) signals having a second center frequency that is a harmonic of the first center frequency; and a processor. The processor is configured to: generate a plurality of wake-up signals at a respective plurality of random times; and for each one of the plurality of wake-up signals, in response to generating the each one wake-up signal, cause the transmit antenna to transmit an RF signal having the second center frequency and indicating a code associated with the device to an interrogator device different from the device.

    ANTENNAS FOR RADIO-FREQUENCY LOCALIZATION
    5.
    发明申请
    ANTENNAS FOR RADIO-FREQUENCY LOCALIZATION 有权

    公开(公告)号：US20220021120A1

    公开(公告)日：2022-01-20

    申请号：US17380743

    申请日：2021-07-20

    Applicant: Humatics Corporation

    Inventor： Christopher Ryan Montoya ,  Gregory L. Charvat ,  Andrew Habib Zai

    IPC: H01Q9/04 ,  H01Q1/22

    Abstract: Described herein are systems for radio-frequency (RF) localization. The systems developed by the inventors are designed to improve the accuracy of RF localization to millimeter and sub-millimeter ranges, and additionally, are designed to do so while also limiting manufacturing costs. The RF localization systems developed by the inventors leverage the relatively low costs associated with the manufacturing of printed circuit board assemblies (PCBAs). Manufacturing RF localization devices using PCBAs poses a number of challenges, including large minimum feature size and the presence of surface waves. Described herein are techniques for addressing challenges arising in connection with RF localization devices fabricated using PCBAs. One technique involves the use of slot-fed antennas, which makes the device efficient notwithstanding the large minimum feature size. Another technique involves the use of frequency selective surfaces for suppressing surface waves.

    Wideband radio-frequency antenna
    6.
    发明授权
    Wideband radio-frequency antenna 有权

    公开(公告)号：US10725146B2

    公开(公告)日：2020-07-28

    申请号：US16144865

    申请日：2018-09-27

    Applicant: Humatics Corporation

    Inventor： Andrew Habib Zai ,  Gregory L. Charvat

    IPC: H04W24/00 ,  G01S5/14 ,  G01S5/02 ,  H01Q9/27 ,  H01Q1/52 ,  H01Q1/38

    Abstract: Radio-frequencies (RF) antennas for use in micro-localization systems are described. The RF antennas described herein may enable localization of objects with high resolutions, such as in the order of one centimeter or less. The RF antennas may be further configured to reduce range error variability across different directions, so that the accuracy of a micro-localization system is substantially the same regardless of the position of the object. An illustrative RF antenna includes an emitting element having first and second conductive traces patterned to reduce the angular impulse delay variability of the RF antenna. The first conductive trace may form a first arm of a spiral and the second conductive trace may form a second arm of the spiral. At least one parameter of the spiral may be selected to reduce the angular impulse delay variability of the RF antenna.

    Wideband radio-frequency antenna
    7.
    发明授权
    Wideband radio-frequency antenna 有权

    公开(公告)号：US10386456B1

    公开(公告)日：2019-08-20

    申请号：US16144830

    申请日：2018-09-27

    Applicant: Humatics Corporation

    Inventor： Andrew Habib Zai ,  Gregory L. Charvat

    IPC: H01Q1/24 ,  H01Q9/30 ,  G01S5/14 ,  H01Q9/27 ,  H01Q1/38 ,  G01S5/02

    Abstract: Radio-frequencies (RF) antennas for use in micro-localization systems are described. The RF antennas described herein may enable localization of objects with high resolutions, such as in the order of one centimeter or less. The RF antennas may be further configured to reduce range error variability across different directions, so that the accuracy of a micro-localization system is substantially the same regardless of the position of the object. An illustrative RF antenna includes a conductive housing forming a first cavity separated from a second cavity by a conductive wall. The RF antenna may further include an emitting element coupled to the conductive housing, a port coupled to the conductive housing, and an antenna feed electrically coupling the emitting element to the port. The antenna feed may pass through the cavities and the conductive wall. The antenna feed may comprise a symmetric and an asymmetric portion, disposed in the different cavities.

    Wide band radio-frequency localization devices and associated systems and methods
    8.
    发明授权
    Wide band radio-frequency localization devices and associated systems and methods 有权

    公开(公告)号：US10090944B1

    公开(公告)日：2018-10-02

    申请号：US15954968

    申请日：2018-04-17

    Applicant: Humatics Corporation

    Inventor： Gregory L. Charvat ,  Andrew Habib Zai ,  Christopher Ryan Montoya

    IPC: H04B5/00 ,  H04B17/27 ,  H04B1/50 ,  H04B1/00

    Abstract: A device comprising: a radio frequency (RF) coupler comprising input, output, and coupled ports; an antenna capable of receiving RF signals having a first center frequency and transmitting RF signals having a second center frequency, the antenna connected to the RF coupler to provide received RF signals to the input port of the RF coupler and transmit RF signals received at the input port via coupling to signals received at the coupled port; and signal transformation circuitry having an input connected to the output port of the RF coupler to receive RF signals provided by the antenna to the input port and an output connected to the coupled port, the signal transformation circuitry configured to transform first RF signals having the first center frequency received from the output port to second RF signals having the second center frequency and to provide them to the coupled port.

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