公开(公告)号：US12224708B2

公开(公告)日：2025-02-11

申请号：US17389935

申请日：2021-07-30

Applicant: Texas Instruments Incorporated

Inventor： Bichoy Bahr ,  Michael Henderson Perrott ,  Baher Haroun ,  Swaminathan Sankaran

IPC: H03B5/32 ,  G06F1/04

Abstract: An oscillator circuit includes a first BAW oscillator, a first coupling stage, a second BAW oscillator, and a second coupling stage. The first BAW oscillator is configured to generate a first output signal at a frequency. The first coupling stage is coupled to the first BAW oscillator, and is configured to amplify the first output signal. The second BAW oscillator is coupled to the first coupling stage, and is configured to generate a second output signal at the frequency. The second output signal differs in phase from the first output signal. The second coupling stage is coupled to the first BAW oscillator and the second BAW oscillator, and is configured to amplify the second output signal and drive the first BAW oscillator.

公开(公告)号：US12132465B2

公开(公告)日：2024-10-29

申请号：US17537776

申请日：2021-11-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jeronimo Segovia-Fernandez ,  Bichoy Bahr ,  Ting-Ta Yen ,  Michael Henderson Perrott ,  Zachary Schaffer

IPC: H03H9/17 ,  H03H9/02 ,  H03H9/13

CPC classification number: H03H9/175 ,  H03H9/02015 ,  H03H9/131

Abstract: A tunable bulk acoustic wave (BAW) resonator includes: a first electrode adapted to be coupled to an oscillator circuit; a second electrode adapted to be coupled to the oscillator circuit; and a piezoelectric layer between the first electrode and the second electrode; and a Bragg mirror. The Bragg mirror has: a metal layer; and a dielectric layer between the metal layer and either of the first electrode or the second electrode. The tunable BAW resonator also includes: a radio-frequency (RF) signal source having a first end and a second end, the first end coupled to the first electrode, and the second end coupled to the second electrode; and an amplifier circuit between either the first electrode or the second electrode and the Bragg mirror metal layer.

公开(公告)号：US12003246B2

公开(公告)日：2024-06-04

申请号：US17731795

申请日：2022-04-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Michael Perrott ,  Bichoy Bahr

IPC: H03L7/26 ,  G04F5/14 ,  G06F1/04 ,  H03K3/011 ,  H03K5/00

CPC classification number: H03L7/26 ,  G04F5/14 ,  G06F1/04 ,  H03K3/011 ,  H03K5/00006

Abstract: A system comprises a digital processing circuit, a frequency modulator, an amplitude modulator, and an adder. The digital processing circuit receives an input signal and a correlation signal and generates a frequency tuning parameter and an amplitude modulation parameter. The frequency modulator generates a frequency modulation signal and the correlation signal. The amplitude modulator receives the amplitude modulation parameter and generates an amplitude modulation signal. The adder receives the frequency tuning parameter and the frequency modulation signal and generates a control signal. In some implementations, the system further comprises a DC feedback circuit that receives the input signal and generates a DC compensation signal. In some implementations, the system further comprises a temperature sensor, a temperature compensation circuit, and a second adder.

公开(公告)号：US11722096B2

公开(公告)日：2023-08-08

申请号：US17490223

申请日：2021-09-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Bichoy Bahr ,  Baher Haroun ,  Swaminathan Sankaran ,  Argyrios Dellis ,  Sachin Kalia

IPC: H03L1/04 ,  H03H9/08 ,  H03B1/02 ,  H05B3/06 ,  H05B1/02 ,  H03B5/32 ,  H03L1/02 ,  H03H9/05

CPC classification number: H03B1/02 ,  H03B5/326 ,  H03H9/0504 ,  H03H9/08 ,  H03L1/028 ,  H03L1/04 ,  H05B1/023 ,  H05B3/06

Abstract: In an example, a system includes a BAW resonator. The system also includes a first heater configured to heat the BAW resonator, where the first heater is controlled by a first control loop. The system includes a circuit coupled to the BAW resonator. The system also includes a second heater configured to heat the circuit, where the second heater is controlled by a second control loop.

公开(公告)号：US20230134722A1

公开(公告)日：2023-05-04

申请号：US17513523

申请日：2021-10-28

Applicant: Texas Instruments Incorporated

Inventor： Yanbo He ,  Bichoy Bahr ,  Swaminathan Sankaran

IPC: G01F1/66

Abstract: An ultrasonic fluid flow measurement system includes an ultrasonic transducer having a semiconductor substrate and an interconnect region over the semiconductor substrate. The ultrasonic transducer has two arrays of ferroelectric resonators in the interconnect region. The arrays of ferroelectric resonators are parallel to a fluid boundary surface of a fluid flow channel attached to the ultrasonic transducer. The ultrasonic transducer includes a transmitter circuit and a detector circuit coupled to the arrays of ferroelectric resonators. The transmitter circuit and the detector circuit include active components in the semiconductor substrate. The ultrasonic fluid flow measurement system may be configured to measure speeds of particles in fluids in the fluid flow channel. The ultrasonic fluid flow measurement system may also be used to measure flow speeds of a fluid in the fluid flow channel.

公开(公告)号：US11387919B2

公开(公告)日：2022-07-12

申请号：US16590354

申请日：2019-10-01

Applicant: Texas Instruments Incorporated

Inventor： Bichoy Bahr ,  Benjamin Stassen Cook ,  Scott Robert Summerfelt

IPC: H04B11/00 ,  H01L29/51 ,  G01N29/24

Abstract: 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.

公开(公告)号：US11171624B2

公开(公告)日：2021-11-09

申请号：US16232259

申请日：2018-12-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Baher Haroun ,  Bichoy Bahr

IPC: G01R31/00 ,  H03H9/02 ,  H03H9/17

Abstract: A voltage sensor device includes an oscillator unit, the oscillator unit having a tunable bulk acoustic wave (BAW) resonator device and an oscillator core. The voltage sensor device also includes a frequency analyzer configured to obtain frequency measurements for the oscillator unit and to determine a voltage sense value based on a comparison of at least some of the obtained frequency measurements. The voltage sensor device also includes an output interface configured to store or output voltage sense values determined by the frequency analyzer.

公开(公告)号：US20210302308A1

公开(公告)日：2021-09-30

申请号：US17120339

申请日：2020-12-14

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jeronimo Segovia Fernandez ,  Bichoy Bahr ,  Hassan Omar Ali ,  Benjamin Stassen Cook

IPC: G01N21/3504 ,  G01N21/61 ,  G01N21/27 ,  G01J5/08 ,  B81B3/00

Abstract: A differential nondispersive infrared (NDIR) sensor incorporates an infrared (IR) chopper and multiple multi-bit digital registers to store and compare parameter ratio values, as may be digitally calibrated to corresponding temperature values, from chopper clock cycle portions in which a plasmonic MEMS detector is irradiated by the IR chopper with such values from chopper clock cycle portions in which the IR detector is not irradiated by the IR chopper. The plasmonic MEMS detector is referenced to a reference MEMS device via a parameter-ratio engine. The reference device can include a broadband IR reflector or can have a lower-absorption metasurface pattern giving it a lower quality factor than the plasmonic detector. The resultant enhancements to accuracy and precision of the NDIR sensor enable it to be used as a sub-parts-per-million gas concentration sensor or gas detector having laboratory, commercial, in-home, and battlefield applications.

公开(公告)号：US11063558B2

公开(公告)日：2021-07-13

申请号：US16114708

申请日：2018-08-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Bichoy Bahr ,  Baher Haroun ,  Ting-Ta Yen ,  Ali Kiaei

IPC: H03B5/32 ,  H03H9/17 ,  H01L41/08 ,  H01L41/047 ,  H03H9/205 ,  H03H9/02

Abstract: A system includes a tunable bulk acoustic wave (BAW) resonator device and a direct-current (DC) tuning controller coupled to the tunable BAW resonator device. The system also includes an oscillator circuit coupled to the tunable BAW resonator device. The DC tuning controller selectively adjusts a DC tuning signal applied to the tunable BAW resonator device to adjust a signal frequency generated by the oscillator circuit.

公开(公告)号：US10923457B2

公开(公告)日：2021-02-16

申请号：US16231555

申请日：2018-12-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Benjamin Stassen Cook ,  Bichoy Bahr ,  Baher Haroun

IPC: H01L25/065 ,  H01F38/14 ,  H03B5/08 ,  H01L21/673

Abstract: A multi-die module includes a first die with a first device and a second die with a second device. The multi-die module also includes a contactless coupler configured to convey signals between the first device and the second device. The multi-die module also includes a coupling loss reduction structure.