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公开(公告)号：US11228843B2
公开(公告)日：2022-01-18
申请号：US16334678
申请日：2017-10-06
发明人： Ronald Gagnon , Chen-Wei Huang
摘要： A device includes: a piezoelectric transducer; a field effect transistor (FET) configured to provide a sub-threshold conduction path for leakage current across the piezoelectric transducer; wherein the FET comprises a gate; wherein each of a width and a length of the gate has a size in accordance with the sub-threshold conduction path being configured to substantially maintain an input voltage to the piezoelectric transducer across a path of the leakage current of the piezoelectric transducer.
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公开(公告)号：US10917727B2
公开(公告)日：2021-02-09
申请号：US16353589
申请日：2019-03-14
发明人： Robert Littrell , Ronald Gagnon
摘要： A MEMS transducer system has a transducer configured to convert a received signal into an output signal for forwarding by a transducer output port, and an integrated circuit having an IC input in communication with the transducer output port. The IC input is configured to receive an IC input signal produced as a function of the output signal. The system also has a dividing element coupled between the IC input and the transducer output port. The dividing element is configured to selectively attenuate one or more signals into the IC input to at least in part produce the IC input signal. Other implementations may couple a feedback loop to the ground of the transducer (similar to bootstrapping), or pick off voltages at specific portions of the transducer.
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3.发明授权公开(公告)号：US10715922B2
公开(公告)日：2020-07-14
申请号：US16081015
申请日：2017-02-28
发明人： Robert J. Littrell , Ronald Gagnon , Karl Grosh
摘要： A device comprising: a sensor; and a first circuit configured to detect when an input stimulus to the sensor satisfies one or more detection criteria, and further configured to produce a signal upon detection that causes adjustment of performance of the device; and a second circuit for processing input following detection, wherein the second circuit is configured to increase its power level following detection, relative to a power level of the second circuit prior to detection.
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公开(公告)号：US20220279286A1
公开(公告)日：2022-09-01
申请号：US17747454
申请日：2022-05-18
发明人： Robert Littrell , Ronald Gagnon
摘要： A MEMS transducer system has a transducer configured to convert a received signal into an output signal for forwarding by a transducer output port, and an integrated circuit having an IC input in communication with the transducer output port. The IC input is configured to receive an IC input signal produced as a function of the output signal. The system also has a dividing element coupled between the IC input and the transducer output port. The dividing element is configured to selectively attenuate one or more signals into the IC input to at least in part produce the IC input signal. Other implementations may couple a feedback loop to the ground of the transducer (similar to bootstrapping), or pick off voltages at specific portions of the transducer.
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公开(公告)号：US20190289405A1
公开(公告)日：2019-09-19
申请号：US16353589
申请日：2019-03-14
发明人： Robert Littrell , Ronald Gagnon
摘要： A MEMS transducer system has a transducer configured to convert a received signal into an output signal for forwarding by a transducer output port, and an integrated circuit having an IC input in communication with the transducer output port. The IC input is configured to receive an IC input signal produced as a function of the output signal. The system also has a dividing element coupled between the IC input and the transducer output port. The dividing element is configured to selectively attenuate one or more signals into the IC input to at least in part produce the IC input signal. Other implementations may couple a feedback loop to the ground of the transducer (similar to bootstrapping), or pick off voltages at specific portions of the transducer.
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6.发明申请公开(公告)号：US20190098417A1
公开(公告)日：2019-03-28
申请号：US16081015
申请日：2017-02-28
发明人： Robert J. Littrell , Ronald Gagnon , Karl Grosh
摘要： A device comprising: a sensor; and a first circuit configured to detect when an input stimulus to the sensor satisfies one or more detection criteria, and further configured to produce a signal upon detection that causes adjustment of performance of the device; and a second circuit for processing input following detection, wherein the second circuit is configured to increase its power level following detection, relative to a power level of the second circuit prior to detection.
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公开(公告)号：US11363387B2
公开(公告)日：2022-06-14
申请号：US17165998
申请日：2021-02-03
发明人： Robert Littrell , Ronald Gagnon
摘要： A MEMS transducer system has a transducer configured to convert a received signal into an output signal for forwarding by a transducer output port, and an integrated circuit having an IC input in communication with the transducer output port. The IC input is configured to receive an IC input signal produced as a function of the output signal. The system also has a dividing element coupled between the IC input and the transducer output port. The dividing element is configured to selectively attenuate one or more signals into the IC input to at least in part produce the IC input signal. Other implementations may couple a feedback loop to the ground of the transducer (similar to bootstrapping), or pick off voltages at specific portions of the transducer.
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公开(公告)号：US11099078B1
公开(公告)日：2021-08-24
申请号：US16110528
申请日：2018-08-23
发明人： Robert Littrell , Yu Hui , Craig Core , Ronald Gagnon
摘要： An acoustic sensor has a MEMS die with MEMS structure. Among other things, the MEMS structure includes a diaphragm configured to mechanically respond to incident acoustic signals, and a temperature sensor member configured to detect temperature.
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公开(公告)号：US20210160623A1
公开(公告)日：2021-05-27
申请号：US17165998
申请日：2021-02-03
发明人： Robert Littrell , Ronald Gagnon
摘要： A MEMS transducer system has a transducer configured to convert a received signal into an output signal for forwarding by a transducer output port, and an integrated circuit having an IC input in communication with the transducer output port. The IC input is configured to receive an IC input signal produced as a function of the output signal. The system also has a dividing element coupled between the IC input and the transducer output port. The dividing element is configured to selectively attenuate one or more signals into the IC input to at least in part produce the IC input signal. Other implementations may couple a feedback loop to the ground of the transducer (similar to bootstrapping), or pick off voltages at specific portions of the transducer.
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10.发明申请公开(公告)号：US20200344555A1
公开(公告)日：2020-10-29
申请号：US15930530
申请日：2020-05-13
发明人： Robert J. Littrell , Ronald Gagnon , Karl Grosh
摘要： A device comprising: a sensor; and a first circuit configured to detect when an input stimulus to the sensor satisfies one or more detection criteria, and further configured to produce a signal upon detection that causes adjustment of performance of the device; and a second circuit for processing input following detection, wherein the second circuit is configured to increase its power level following detection, relative to a power level of the second circuit prior to detection.
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