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    Integrated compact mmW spectroscopy cell system and method
    123.
    发明授权
    Integrated compact mmW spectroscopy cell system and method 有权

    公开(公告)号：US11719577B2

    公开(公告)日：2023-08-08

    申请号：US17157674

    申请日：2021-01-25

    Applicant: Texas Instruments Incorporated

    Inventor： Adam Joseph Fruehling ,  Juan Alejandro Herbsommer ,  Argyrios Dellis

    IPC: G01J3/42 ,  G01N21/3581

    CPC classification number: G01J3/42 ,  G01N21/3581

    Abstract: A compact mmW spectroscopy cell system for detecting volatile organic compounds (compounds) in a gas. The system includes a gas collection chamber, an input buffer cavity for receiving the gas from the gas collection chamber, pumping devices to pass the gas from the buffer cavity to an absorption cell and maintain pressure, and a transceiver connected to the cell. The transceiver interrogates the absorption cell filled with the gas by passing a high frequency electromagnetic signal and sweeping the signal to generate an absorption spectra which is compared to a spectroscopy database for detecting the compounds in the gas. The absorption cell, collection chambers, and pumping devices are fabricated with standard CMOS processing techniques at chip and wafer scale. The transceiver bonded to the absorption cell with chip scale integration.

    Millimeter wave chip scale atomic clock
    127.
    发明授权
    Millimeter wave chip scale atomic clock 有权

    公开(公告)号：US11126144B2

    公开(公告)日：2021-09-21

    申请号：US16844819

    申请日：2020-04-09

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Bichoy Bahr ,  Argyrios Dellis ,  Juan Alejandro Herbsommer ,  Baher Haroun

    IPC: H03B17/00 ,  G04F5/14 ,  H03L7/26 ,  G06F1/08 ,  H03L7/099

    Abstract: A clock generator includes a hermetically sealed cavity and clock generation circuitry. A dipolar molecule that exhibits a quantum rotational state transition at a fixed frequency is disposed in the cavity. The clock generation circuitry is configured to generate an output clock signal based on the fixed frequency of the dipolar molecule. The clock generation circuitry includes a detector circuit, a multiplier, and reference oscillator control circuitry. The detector circuit is coupled to the cavity, and is configured to generate a detection signal representative of an amplitude of a signal at an output of the cavity. The multiplier is coupled to the detector circuit, and is configured to multiply the detection signal with a mixing signal to produce a derivative of the detection signal. The reference oscillator control circuitry is configured to set a frequency of a reference oscillator based on the derivative of the detection signal.

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