公开(公告)号：US20210099237A1

公开(公告)日：2021-04-01

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

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：US20200373908A1

公开(公告)日：2020-11-26

申请号：US16422494

申请日：2019-05-24

Applicant: Texas Instruments Incorporated

Inventor： Ting-Ta Yen ,  Jeronimo Segovia Fernandez ,  Bichoy Bahr ,  Peter Smeys

IPC: H03H9/17 ,  H03H9/13 ,  H03H9/05 ,  H03H9/10

Abstract: A micromechanical system (MEMS) resonator includes a base substrate. A piezoelectric layer has a first electrode attached to a first surface of the piezoelectric layer and a second electrode attached to a second surface of the piezoelectric layer opposite the first electrode. The first electrode is bounded by a perimeter edge. A patterned acoustic mirror is formed on a top surface of the first electrode opposite the piezoelectric layer, such that the patterned acoustic mirror covers a border strip of the top surface of the first electrode at the perimeter edge and does not cover an active portion of the top surface of the first electrode.

公开(公告)号：US20200272107A1

公开(公告)日：2020-08-27

申请号：US16871835

申请日：2020-05-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

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

IPC: G04F5/14 ,  H03B17/00 ,  H03L7/26

Abstract: A clock apparatus includes: (a) a gas cell, including a continuous path cavity including a sealed interior for providing a signal waveguide; (b) an apparatus for providing an electromagnetic wave to travel along the continuous path cavity and for circulating around the continuous path cavity back toward and past a point of entry of the electromagnetic wave in the continuous path cavity; (c) a dipolar gas inside the sealed interior of the cavity; and (d) receiving apparatus for detecting an amount of energy in the electromagnetic wave, wherein the amount of energy is responsive to an amount of absorption of the electromagnetic wave as the electromagnetic wave passes through the dipolar gas.

公开(公告)号：US20200241480A1

公开(公告)日：2020-07-30

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

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.

公开(公告)号：US20190204787A1

公开(公告)日：2019-07-04

申请号：US16234494

申请日：2018-12-27

Applicant: Texas Instruments Incorporated

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

IPC: G04F5/14 ,  H03L7/26 ,  H03B17/00

CPC classification number: G04F5/14 ,  H01P5/16 ,  H03B17/00 ,  H03L7/26

Abstract: A clock apparatus with: (i) a gas cell, including a continuous path cavity including a sealed interior for providing a signal waveguide; (ii) an apparatus for providing an electromagnetic wave to travel along the continuous path cavity and for circulating around the continuous path cavity back toward and past a point of entry of the electromagnetic wave in the continuous path cavity; (iii) a dipolar gas inside the sealed interior of the cavity; and (iv) receiving apparatus for detecting an amount of energy in the electromagnetic wave, wherein the amount of energy is responsive to an amount of absorption of the electromagnetic wave as the electromagnetic wave passes through the dipolar gas.

公开(公告)号：US10312185B2

公开(公告)日：2019-06-04

申请号：US15726284

申请日：2017-10-05

Applicant: Texas Instruments Incorporated

Inventor： Bichoy Bahr ,  Baher Haroun ,  Ali Kiaei

IPC: H01L23/495 ,  B81C1/00 ,  G01C19/56 ,  H01L23/00 ,  B81B7/02 ,  B81B7/00

Abstract: An integrated circuit package includes a first die that has a microelectromechanical system (MEMS) resonator coupled to a coil. A second die includes a coil fabricated on a top surface of the second die, and an electronic circuit with tank circuit terminals fabricated on the second die and coupled to the second coil. The second die is positioned adjacent the first die such that the first coil is operable to electromagnetically couple to the second coil.

公开(公告)号：US20190036512A1

公开(公告)日：2019-01-31

申请号：US15660550

申请日：2017-07-26

Applicant: Texas Instruments Incorporated

Inventor： Ting-Ta Yen ,  Bichoy Bahr

IPC: H03H9/17

Abstract: Bulk acoustic wave resonators having a phononic crystal acoustic mirror are disclosed. An example integrated circuit package includes a bulk acoustic wave (BAW) resonator including a phononic crystal acoustic mirror (PCAM), the PCAM including a first arrangement of a first plurality of members in a first region, and a second arrangement of a second plurality of members in a second region, the first arrangement different from the second arrangement.

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.