VAPOR CELL FOR QUANTUM-BASED DEVICE

    公开(公告)号:US20240402654A1

    公开(公告)日:2024-12-05

    申请号:US18203741

    申请日:2023-05-31

    Abstract: In one example, a method includes placing a first glass substrate and a second glass substrate in a chamber. The first glass substrate has a first surface and the second glass substrate has a second surface. The first glass substrate and the second glass substrate are brought together in the chamber to form a junction between the first and second surfaces. The junction is sealed to form a glass container that encases a dipolar gas when the chamber is filled with the dipolar gas. An EM reflective coating is formed on an outer surface of the glass container.

    Ultrasonic equalization and gain control for smart speakers

    公开(公告)号:US11971476B2

    公开(公告)日:2024-04-30

    申请号:US17364011

    申请日:2021-06-30

    CPC classification number: G01S15/04

    Abstract: Ultrasonic audio processing circuitry and a method useful in ultrasonic presence detection. An ultrasonic burst generator produces an ultrasonic burst signal at one or more ultrasonic frequencies, and an equalizer equalizes that ultrasonic burst signal according to frequency response characteristics of the speaker and microphone at those ultrasonic frequencies. Driver circuitry drives a speaker with the ultrasonic burst signal, which may be combined with an audible audio signal. An ultrasonic separation filter separates an ultrasonic portion from a signal received at a microphone, and processing circuitry is provided to determine a delay time of an echo corresponding to the ultrasonic burst signal in that separated ultrasonic portion of the received signal. In another aspect, the equalizer equalizes an ultrasonic portion of the signal received at a microphone, according to frequency response characteristics of the speaker and microphone at the ultrasonic frequencies of the burst.

    Magnetic current sensing
    45.
    发明授权

    公开(公告)号:US11885834B2

    公开(公告)日:2024-01-30

    申请号:US17463112

    申请日:2021-08-31

    CPC classification number: G01R15/202 G01R19/10

    Abstract: In a described example, a circuit includes a sensor circuit including multiple magnetic field sensors having respective sensor outputs. The magnetic field sensors are configured to provide magnetic field sensor signals at the respective sensor outputs representative of a measure of current flow through a conductive structure. A combiner interface has combiner inputs and a combiner output. The combiner inputs are coupled to the respective sensor outputs. The combiner interface is configured to provide an aggregate sensor measurement at the combiner output responsive to the magnetic field sensor signals, in which the aggregate sensor measurement is decoupled from magnetic fields generated responsive to the current flow through the conductive structure.

    Integrated circuit FLUID sensor
    47.
    发明公开

    公开(公告)号:US20230184713A1

    公开(公告)日:2023-06-15

    申请号:US18066206

    申请日:2022-12-14

    CPC classification number: G01N27/4148 G01N27/4146

    Abstract: In some examples, an integrated circuit comprises: a semiconductor die including a semiconductor substrate, a dielectric layer on the semiconductor substrate, and a metallization structure encapsulated in the dielectric layer, in which the semiconductor substrate includes a transistor having a first current terminal, a second current terminal, and a channel region between the first and second current terminals, and the dielectric layer has a sensing side facing away from the semiconductor substrate; an insulation layer on the sensing side; a sensor terminal on the sensing side and over the channel region; and a restriction structure including an opening and a rigid silicon-based fluidic structure, in which the silicon-based fluidic structure is on the sensing side and encapsulates a fluid cavity on the sensing side, the sensor terminal is in the fluid cavity, and the restriction structure is configured to transport a fluid by microfluidic diffusion.

    Packaged electronic device and multilevel lead frame coupler

    公开(公告)号:US11600581B2

    公开(公告)日:2023-03-07

    申请号:US17231897

    申请日:2021-04-15

    Abstract: A packaged electronic device includes a multilayer lead frame having first and second trace levels, a via level therebetween, a conductive feed structure, and a conductive reflector wall. The first trace level includes a conductive coupler antenna and a conductive ground structure that extends in a plane of orthogonal first and second directions, and a portion of the conductive coupler antenna faces outward along a third direction orthogonal to the first and second directions. The conductive reflector wall has an opening and extends along the third direction between the first and second trace levels around a portion of the conductive coupler antenna. The conductive feed structure is coupled to the conductive coupler antenna and extends along the first direction through the opening of the conductive reflector wall.

    Ultrasonic Equalization and Gain Control for Smart Speakers

    公开(公告)号:US20230003880A1

    公开(公告)日:2023-01-05

    申请号:US17364011

    申请日:2021-06-30

    Abstract: Ultrasonic audio processing circuitry and a method useful in ultrasonic presence detection. An ultrasonic burst generator produces an ultrasonic burst signal at one or more ultrasonic frequencies, and an equalizer equalizes that ultrasonic burst signal according to frequency response characteristics of the speaker and microphone at those ultrasonic frequencies. Driver circuitry drives a speaker with the ultrasonic burst signal, which may be combined with an audible audio signal. An ultrasonic separation filter separates an ultrasonic portion from a signal received at a microphone, and processing circuitry is provided to determine a delay time of an echo corresponding to the ultrasonic burst signal in that separated ultrasonic portion of the received signal. In another aspect, the equalizer equalizes an ultrasonic portion of the signal received at a microphone, according to frequency response characteristics of the speaker and microphone at the ultrasonic frequencies of the burst.

    PACKAGED ELECTRONIC DEVICE AND MULTILEVEL LEAD FRAME COUPLER

    公开(公告)号:US20220336383A1

    公开(公告)日:2022-10-20

    申请号:US17231897

    申请日:2021-04-15

    Abstract: A packaged electronic device includes a multilayer lead frame having first and second trace levels, a via level therebetween, a conductive feed structure, and a conductive reflector wall. The first trace level includes a conductive coupler antenna and a conductive ground structure that extends in a plane of orthogonal first and second directions, and a portion of the conductive coupler antenna faces outward along a third direction orthogonal to the first and second directions. The conductive reflector wall has an opening and extends along the third direction between the first and second trace levels around a portion of the conductive coupler antenna. The conductive feed structure is coupled to the conductive coupler antenna and extends along the first direction through the opening of the conductive reflector wall.

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