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    Zero Power Micromechanical Switch-Based Sensing and Monitoring System
    3.
    发明申请
    Zero Power Micromechanical Switch-Based Sensing and Monitoring System 有权

    公开(公告)号：US20220099495A1

    公开(公告)日：2022-03-31

    申请号：US17422861

    申请日：2020-01-21

    Applicant: Northeastern University

    Inventor： Matteo RINALDI ,  Zhenyun QIAN ,  Vageeswar RAJARAM ,  Sungho KANG

    IPC: G01J5/00 ,  G01J5/03 ,  G01J5/02 ,  G01J5/08 ,  G01J5/0806

    Abstract: Zero-power system for remote monitoring of heat sources is provided. The systems detect failure indicators of remote equipment including power substations, oil rigs, large inaccessible machinery in a factory, and communications equipment. The systems also can be used to detect the presence of people in buildings or in other locations, so as to improve HVAC utilization in large buildings. When the zero-power monitoring systems detect heat sources, such as the presence of people, failure indicators, or a targeted environmental signal, a circuit is closed using the energy of the detected radiation, and activating an RFID tag, a radio transmitter, or an alarm. The monitoring systems can remain deployed and active for many years without the need for battery replacement.

    Piezoelectric Cross-Sectional Lamé Mode Transformer
    4.
    发明申请
    Piezoelectric Cross-Sectional Lamé Mode Transformer 审中-公开

    公开(公告)号：US20180287047A1

    公开(公告)日：2018-10-04

    申请号：US15767490

    申请日：2016-10-11

    Applicant: Northeastern University

    Inventor： Matteo RINALDI ,  Cristian CASSELLA

    IPC: H01L41/107 ,  H01L41/047 ,  H01L41/04

    Abstract: A transformer including a piezoelectric plate and interdigital electrodes is provided. The interdigitated electrodes includes a plurality of conductive strips disposed over the piezoelectric plate. A cross-sectional Lamé mode resonance is excited in a cross sectional plane of the piezoelectric plate in response to input voltage applied through the interdigitated electrode, producing a voltage gain. A device including the aforementioned transformer is also provided.

    Aluminum Nitride Combined Overtone Resonators for the mmWave Spectrum
    7.
    发明申请
    Aluminum Nitride Combined Overtone Resonators for the mmWave Spectrum 有权

    公开(公告)号：US20210111696A1

    公开(公告)日：2021-04-15

    申请号：US17069331

    申请日：2020-10-13

    Applicant: Northeastern University

    Inventor： Matteo RINALDI ,  Guofeng CHEN

    IPC: H03H9/02 ,  H03H9/46

    Abstract: A resonator system is provided in which a combined overtone resonator device is excited with a two-dimensional mode of mechanical vibration in a cross sectional plane of a piezoelectric plate in response to an alternating voltage applied through an interdigitated electrode. The cross sectional plane extends along the width direction and the thickness direction, and the two-dimensional mode of mechanical vibration is a two-dimensional combined overtone mode of second and third order asymmetrical Lamb-wave overtones.

    Microelectromechanical Tunable Delay Line Circuit
    10.
    发明申请
    Microelectromechanical Tunable Delay Line Circuit 有权

    公开(公告)号：US20220077848A1

    公开(公告)日：2022-03-10

    申请号：US17368173

    申请日：2021-07-06

    Applicant: Northeastern University

    Inventor： Yao YU ,  Matteo RINALDI

    IPC: H03K5/14 ,  H03H9/15 ,  H03K5/145

    Abstract: Tunable delay circuit devices have an input port, an output port, at least three parallel paths connecting the input port and the output port, on each path, an input switch and an output switch, and on each path, a plurality of shunt resonant tanks connected between the input switch and the output switch, each shunt resonant tank periodically chargeable from the input port and dischargeable to the output port by operation of the input switch and the output switch.

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