System for sensing miniature gaps by inductive coupling

    公开(公告)号:US11801946B2

    公开(公告)日:2023-10-31

    申请号:US16394278

    申请日:2019-04-25

    Abstract: Systems and methods for measuring air gaps between opposing surfaces of two structural components. In one application, such measurements are used to fabricate a shim that fills the air gap between two structural members, such as parts of an aircraft. The resonant inductive coupling-based sensing system has the capability to remotely measure an air gap using an on-board transmit system. Furthermore, the system has the capability to switch between multiple inductor-capacitor sets such as to simultaneously measure air gaps across an area so that a better profile of the air gap can be determined. The resonant inductive coupling-based gap sensor is configured as signal generating and signal sensing electronics printed or mounted on respective flexible substrates to provide a flexible and portable measurement solution.

    LOW-PROFILE MAGNETIC ANTENNA ASSEMBLIES

    公开(公告)号:US20220216614A1

    公开(公告)日:2022-07-07

    申请号:US17471292

    申请日:2021-09-10

    Inventor: John E. Rogers

    Abstract: An antenna assembly includes a first magnetic substrate having a first surface and a second surface opposite from the first surface. One or more antenna elements are disposed on the first surface of the first magnetic substrate. A microstrip feed line is disposed on the second surface of the first magnetic substrate. A second magnetic substrate is secured to the first magnetic substrate. The second magnetic substrate includes one or more cavities aligned with the one or more antenna elements and the microstrip feed line.

    Electronically Scannable Device For Radio-Frequency Identification

    公开(公告)号:US20210209439A1

    公开(公告)日:2021-07-08

    申请号:US16732458

    申请日:2020-01-02

    Abstract: A method and apparatus for identifying a location of a radio-frequency identification tag. A hand-held locator device is configured to transmit a first signal and a second signal. A frequency of the first signal changes through a first range of frequencies and is transmitted in a range of directions corresponding to the first range of frequencies. A frequency of the second signal changes through a second range of frequencies and is transmitted in the range of directions corresponding to the second range of frequencies. A difference frequency signal, having a frequency that is a difference between the frequency of the first signal and the frequency of the second signal, is received from the radio-frequency identification tag. The difference frequency signal is processed to determine and display a direction of the radio-frequency identification tag from the locator device.

    Additively manufactured flexible interposer

    公开(公告)号:US11011389B2

    公开(公告)日:2021-05-18

    申请号:US16390256

    申请日:2019-04-22

    Abstract: A semiconductor device assembly and method of providing a semiconductor device assembly. The method includes providing a flexible interposer, providing a first redistribution layer on the flexible interposer, and providing a second redistribution layer on a portion of the first redistribution layer. The second redistribution layer is provided by additive manufacturing. The first redistribution layer may be deposited in a clean room environment. The first redistribution layer may be deposited via chemical deposition or physical deposition. A semiconductor device is attached to the first redistribution layer. The flexible interposer may be attached to a board with the semiconductor device being electrically connected to the board via the first redistribution layer, the flexible interposer, and the second redistribution layer. The flexible interposer may be attached to a flexible hybrid electronic (FHE) board. The flexible nature of the flexible interposer and/or the FHE board may redistribute stress on the semiconductor device assembly.

    Conformal antenna with enhanced circular polarization

    公开(公告)号:US10916853B2

    公开(公告)日:2021-02-09

    申请号:US16111778

    申请日:2018-08-24

    Inventor: John E. Rogers

    Abstract: A conformal antenna with enhanced circular polarization (“CAECP”) is disclosed. The CAECP includes a plurality of dielectric layers forming a dielectric structure, where a top dielectric layer, of the plurality of dielectric layers, includes a top surface. The CAECP further includes an inner conductor, a coupling element (“CE”), a patch antenna element (“PAE”), a bottom conductor, and an antenna slot. The inner conductor is formed within the dielectric structure, the CE is formed within the dielectric structure above the inner conductor, the PAE is formed on the top surface, and the antenna slot is formed within PAE. The PAE is a conductor and the CAECP is configured to support a transverse electromagnetic (“TEM”) signal within the dielectric structure.

    Electronically steerable conformal antenna

    公开(公告)号:US10707555B2

    公开(公告)日:2020-07-07

    申请号:US16143211

    申请日:2018-09-26

    Abstract: An electronically steerable conformal antenna is disclosed. The antenna comprises a circuit board having a composite dielectric. The composite dielectric includes an array of a plurality of antenna elements disposed on the top surface and an array of tunable cavities, each tunable cavity disposed between an associated antenna element and a conductive ground plane on the composite dielectric's bottom surface. The composite dielectric also includes a conductor, extending from an antenna input through the composite dielectric and the tunable cavities and which forms a microstrip between each of the antenna elements.

    Conformal antenna with dielectric lens

    公开(公告)号:US10700423B2

    公开(公告)日:2020-06-30

    申请号:US16141552

    申请日:2018-09-25

    Inventor: John E. Rogers

    Abstract: A conformal antenna having dielectric lenses disposed over the antenna elements is disclosed. The antenna comprises a circuit board having a composite dielectric. The composite dielectric includes an array of a plurality of antenna elements disposed on the top surface and a conductive ground plane disposed on the bottom surface. A conductor extends from an antenna input through the composite dielectric, the conductor forming microstrip with the bottom surface conductive ground plane. The top surface of the composite dielectric further comprises at least one dielectric lens, each dielectric lens disposed over only one antenna element of at least a subset of the plurality of antenna elements.

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