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1.发明授权公开(公告)号：US12095471B2
公开(公告)日：2024-09-17
申请号：US17936505
申请日：2022-09-29
发明人： Bichoy Bahr , Yogesh Ramadass
CPC分类号： H03L7/0995 , H03B5/326 , H03H9/02244 , H03K3/0231 , H03L7/085 , H03M1/46
摘要： A clock circuit includes a voltage-controlled oscillator (VCO) having a control input and a first clock output. The clock circuit includes a frequency-locked loop (FLL) having an FLL input and a control output, the control output coupled to the control input. A microelectromechanical system (MEMS) resonator-based oscillator has a second clock output. A multiplexer has a first multiplexer input, a second multiplexer input, a selection input, and a multiplexer output. The first multiplexer input is coupled to the first clock output. The second multiplexer input is coupled to the second clock output. The multiplexer output is coupled to the FLL input.
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公开(公告)号：US20230068451A1
公开(公告)日：2023-03-02
申请号：US17461235
申请日：2021-08-30
发明人： Bichoy Bahr , Adam Fruehling , Scott Summerfelt
摘要： An example microelectromechanical structures (MEMS) switch includes a body having a first end and a second end opposite the first end. The body extends from a base at the first end and has a first width. The MEMS switch further includes a bridge extending laterally from the body at the second end, and a spine extending between the bridge and the base. The spine has a second width smaller than the first width. At least one of the spine or the body includes a first material with a first thermal coefficient and a second material with a second thermal coefficient different from the first thermal coefficient.
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公开(公告)号：US20230061753A1
公开(公告)日：2023-03-02
申请号：US17463013
申请日：2021-08-31
摘要： An example apparatus includes: a semiconductor substrate; a mechanical resonator supported by the substrate, the mechanical resonator including an array of capacitors; and a plasmonic infrared (IR) absorber including an array of metal structures. The mechanical resonator is between the substrate and the IR absorber.
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公开(公告)号：US11545466B2
公开(公告)日：2023-01-03
申请号：US17150825
申请日：2021-01-15
发明人： Benjamin Stassen Cook , Bichoy Bahr , Baher Haroun
IPC分类号： H01L25/065 , H01L21/673 , H03B5/08 , H01F38/14
摘要： A multi-die module includes a first die with a first electronic device and a second die with a second electronic device. The multi-die module also includes a contactless coupler configured to convey signals between the first electronic device and the second electronic device. The multi-die module also includes a coupling loss reduction structure.
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公开(公告)号：US20220345228A1
公开(公告)日：2022-10-27
申请号：US17860087
申请日：2022-07-07
摘要： In described examples of a CMOS IC, an ultrasonic transducer having terminals is formed on a substrate of the IC. CMOS circuitry having ultrasonic signal terminals is formed on the substrate. At least one metal interconnect layer overlies the ultrasonic transducer and the CMOS circuitry. The at least one metal interconnect layer connects the CMOS circuitry ultrasonic signal terminals to the terminals of the ultrasonic transducer.
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公开(公告)号：US10985729B2
公开(公告)日：2021-04-20
申请号：US16235512
申请日：2018-12-28
摘要： A pressure sensor apparatus is disclosed. The pressure sensor apparatus includes a bulk acoustic wave (BAW) die having a die interface side and a pressure contact side, a sensor BAW resonator and a reference BAW resonator disposed on the die interface side of the BAW die, a control circuit die coupled to the die interface side of the BAW die via an attachment layer, and an extended opening on the pressure contact side that extends into a depth of the BAW die and is generally aligned with the sensor BAW resonator, the extended opening being configured to translate an external pressure on the pressure contact side onto the sensor BAW resonator.
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公开(公告)号：US20190068198A1
公开(公告)日：2019-02-28
申请号：US15690144
申请日：2017-08-29
发明人： Bichoy Bahr , Baher Haroun , Ali Kiaei
摘要： Methods and systems for producing a low-power, low-phase noise oscillating signal using a self-injection locking oscillator. Preferred embodiments include, for example, producing, using an oscillator, a signal having a base frequency component, an Mth harmonic component and a Pth harmonic component, wherein M and P are selected integers and M>P>1; filtering said signal through one or more bandpass filters comprising at least two resonators, said filters having Q factor ≥5, said filters configured to pass said Mth and Pth harmonic components; multiplying said filtered Mth and Pth harmonic components together to produce a multiplied signal, and filtering said multiplied signal using a low pass filter to pass a difference between said filtered Mth and Pth harmonic components, said difference comprising a filtered beat frequency waveform; and injecting said filtered beat frequency waveform into said oscillator to thereby injection lock said signal to said filtered beat frequency waveform.
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公开(公告)号：US11933670B2
公开(公告)日：2024-03-19
申请号：US17463013
申请日：2021-08-31
CPC分类号： G01J1/46 , G01J1/0403 , G01J1/0488 , G02B5/208
摘要： An example apparatus includes: a semiconductor substrate; a mechanical resonator supported by the substrate, the mechanical resonator including an array of capacitors; and a plasmonic infrared (IR) absorber including an array of metal structures. The mechanical resonator is between the substrate and the IR absorber.
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公开(公告)号：US11456751B1
公开(公告)日：2022-09-27
申请号：US17536924
申请日：2021-11-29
IPC分类号： H03L7/099 , H03B5/32 , H03L7/08 , H03L7/14 , H03L7/10 , H03L7/06 , H03L1/00 , H03L1/02 , H03L7/00
摘要： A reference frequency signal generator comprises a plurality of ovenized reference crystal oscillators (OCXOs) having different turn-over-temperatures, a selector logic circuit coupled to outputs of the OCXOs, a temperature sensor, and a controller coupled to an output of the temperature sensor. The selector logic circuit outputs one of the outputs of the OCXOs based on a control signal from the controller. The controller also generates control signals for the OCXOs. In some implementations, the reference frequency signal generator includes a phase-locked loop or a fractional output divider coupled to the output of the selector logic circuit and configured to receive a calibration signal from the controller.
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公开(公告)号：US11303288B2
公开(公告)日：2022-04-12
申请号：US17163788
申请日：2021-02-01
发明人： Bichoy Bahr , Kaichien Tsai , Scott R. Summerfelt
IPC分类号： H03L7/099 , H03L7/24 , H03L7/08 , H03L7/085 , H03B1/00 , H03L1/02 , H03L7/00 , H03B28/00 , H01L25/065
摘要： An oscillator assembly includes a scribe seal, an oscillator circuit, and a calibration circuit. The oscillator circuit includes an output. The calibration circuit is coupled to the oscillator circuit. The calibration circuit includes a reference frequency terminal, a conductor coupled to the reference frequency terminal, and an oscillator input terminal. The conductor extends to an edge of the oscillator circuit assembly and penetrates the scribe seal. The oscillator input terminal is coupled to the output of the oscillator circuit.
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