Patents by Inventor Bryant Garcia

Bryant Garcia has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250247073
    Abstract: A filter device is provided that includes a substrate comprising a base and an intermediate layer; a piezoelectric layer coupled to the substrate; a first interdigital transducer (IDT) of a first bulk acoustic resonator device on the piezoelectric layer and having interleaved fingers over a first cavity the first bulk acoustic resonator device; a second IDT of a second bulk acoustic resonator device on the piezoelectric layer and having interleaved fingers over a second cavity of the second bulk acoustic resonator device; a first dielectric layer having a first thickness disposed on the piezoelectric layer and between the interleaved fingers of the first IDT; and a second dielectric layer having a second thickness disposed on the piezoelectric layer and between the interleaved fingers of the second IDT. Moreover, the first thickness is greater than the second thickness.
    Type: Application
    Filed: January 17, 2025
    Publication date: July 31, 2025
    Inventors: Greg Dyer, Bryant Garcia, Julius Koskela, Robert B. Hammond, Patrick Turner, Viktor Plesski, Ventsislav Yantchev, Soumya Yandrapalli
  • Patent number: 12375056
    Abstract: There is disclosed acoustic resonators and filter devices. An acoustic resonator includes a single-crystal piezoelectric plate having front and back surfaces, a portion of the piezoelectric plate forming a diaphragm. An interdigital transducer (IDT) is formed on the front surface of the single-crystal piezoelectric plate such that interleaved fingers of the IDT are disposed on the diaphragm. The piezoelectric plate and the IDT are configured such that a radio frequency signal applied to the IDT excites a primary shear acoustic mode in the diaphragm.
    Type: Grant
    Filed: May 6, 2024
    Date of Patent: July 29, 2025
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Viktor Plesski, Bryant Garcia, Julius Koskela, Patrick Turner
  • Publication number: 20250219613
    Abstract: A bulk acoustic resonator device and filter device including the same is provided. The resonator includes a substrate; a piezoelectric layer attached to the substrate; and an interdigital transducer having interleaved fingers on the piezoelectric layer. The interleaved fingers include a first layer proximate the piezoelectric layer, a second layer over the first layer, and a third layer over the second layer such that the second layer is between the first and third layers. Adjacent layers of the first, second and third layers are comprised of different metals. Moreover, a primary shear acoustic mode is excited in the piezoelectric layer and is a bulk shear mode where acoustic energy propagates in a direction predominantly orthogonal to the surface of the piezoelectric layer and predominantly orthogonal to a direction of an electric field created by the interleaved fingers of the IDT that is predominantly lateral in the piezoelectric layer.
    Type: Application
    Filed: February 27, 2025
    Publication date: July 3, 2025
    Inventors: Julius KOSKELA, Bryant Garcia
  • Publication number: 20250219616
    Abstract: An acoustic resonator is provided that a substrate; a piezoelectric layer, a Bragg reflector layer disposed between the substrate and the piezoelectric layer, and an IDT at a surface of the piezoelectric layer that faces the Bragg reflector layer. The IDT includes a plurality of interleaved fingers extending from first and second busbars. Moreover, an etched region extends into at least a portion of the piezoelectric layer, the etched region including an area between the first busbar and a tip of at least one finger of the plurality of interleaved fingers extending from the second busbar in a first direction substantially parallel to a direction in which the interleaved fingers extend.
    Type: Application
    Filed: December 19, 2024
    Publication date: July 3, 2025
    Inventors: Bryant GARCIA, Patrick TURNER, Greg DYER, Naohiro NODAKE, Albert CARDONA, Takeshi NAKAO, Drew MOROSIN
  • Patent number: 12341490
    Abstract: An acoustic resonator device includes a portion of a piezoelectric plate is a diaphragm spanning a cavity in a substrate. A conductor pattern on a surface of the piezoelectric plate includes an interdigital transducer (IDT) with a first busbar, a second busbar, and a plurality of interleaved fingers extending alternately from the first and second busbars, first and second reflector elements proximate and parallel to a first finger of the interleaved fingers, and third and fourth reflector element proximate and parallel to a last finger of the interleaved fingers. Overlapping portions of the interleaved fingers and the first to fourth reflector elements are on the diaphragm. pr1 is a center-to-center distance of the first and second reflector elements and a center-to-center distance of the third and fourth reflector elements, p is a pitch of the interleaved fingers, and 1.1p?pr1?1.5p.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: June 24, 2025
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Bryant Garcia, Greg Dyer
  • Patent number: 12341493
    Abstract: An acoustic resonator device includes a diaphragm including a portion of the piezoelectric plate spanning a cavity in a substrate. A conductor pattern on a surface of the piezoelectric plate includes an interdigital transducer (IDT) with a first busbar, a second busbar, and a plurality of interleaved fingers, wherein the plurality of interleaved fingers extend alternately from the first and second busbars, overlapping portions of the plurality of interleaved fingers on the diaphragm. The conductor pattern also includes first and second reflector elements on the diaphragm proximate and parallel to a first finger of the plurality of interleaved fingers, and third and fourth reflector element on the diaphragm proximate and parallel to a last finger of the plurality of interleaved fingers.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: June 24, 2025
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Bryant Garcia, Greg Dyer
  • Patent number: 12323133
    Abstract: Acoustic resonator devices, filters, and methods are disclosed. An acoustic resonator includes a substrate, a lithium niobate plate having front and back surfaces, wherein Euler angles of the lithium niobate plate are [0°, ?, 0°], where ? is greater than or equal to 0° and less than or equal to 60°, and an acoustic Bragg reflector between the surface of the substrate and the back surface of the lithium niobate plate. An interdigital transducer (IDT) is formed on the front surface of the piezoelectric plate. At least one finger of the IDT is disposed in a groove in the lithium niobate plate.
    Type: Grant
    Filed: June 7, 2023
    Date of Patent: June 3, 2025
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Ventsislav Yantchev, Viktor Plesski, Bryant Garcia
  • Patent number: 12323130
    Abstract: Acoustic resonator devices and methods are disclosed. An acoustic resonator device includes a piezoelectric plate having opposed front and back surfaces. A first electrode and a second electrode are formed on the front surface of the piezoelectric plate, the first and second electrodes and the piezoelectric plate configured such that a radio frequency signal applied between the first and second electrodes excites a shear primary acoustic mode in the piezoelectric plate. The first electrode and the second electrode have trapezoidal cross-sectional shapes. A sidewall angle of at least one side surface of the first electrode and a sidewall angle of at least one side surface of the second electrode are greater than or equal to 70 degrees and less than or equal to 110 degrees.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: June 3, 2025
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Bryant Garcia, Patrick Turner, Robert Hammond, Minefumi Ouchi
  • Patent number: 12301204
    Abstract: Resonator devices are disclosed. An acoustic resonator device includes a piezoelectric plate having front and back surfaces, an acoustic Bragg reflector on the back surface, and an interdigital transducer (IDT) on the front surface. The acoustic Bragg reflector reflects a primary shear acoustic mode excited by the IDT in the piezoelectric plate over a frequency range including a resonance frequency and an anti-resonance frequency of the acoustic resonator device.
    Type: Grant
    Filed: October 16, 2023
    Date of Patent: May 13, 2025
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Ventsislav Yantchev, Bryant Garcia, Viktor Plesski, Soumya Yandrapalli, Robert B. Hammond, Patrick Turner, Jesson John
  • Patent number: 12283944
    Abstract: Acoustic resonator devices, filters, and methods are disclosed. An acoustic resonator includes a substrate, a lithium niobate plate having front and back surfaces, wherein Euler angles of the lithium niobate plate are [0°, ?, 0°], where ? is greater than or equal to 0° and less than or equal to 60°. An interdigital transducer (IDT) is formed on the piezoelectric plate.
    Type: Grant
    Filed: May 8, 2023
    Date of Patent: April 22, 2025
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Ventsislav Yantchev, Viktor Plesski, Bryant Garcia
  • Patent number: 12278617
    Abstract: Acoustic resonators and filters are disclosed. An acoustic resonator includes a substrate, a piezoelectric plate and an acoustic Bragg reflector between a surface of the substrate and a back surface of the piezoelectric plate. A conductor pattern on a front surface of the piezoelectric plate includes an interdigital transducer (IDT). The IDT includes a first busbar, a second busbar, and interleaved parallel fingers extending alternately from the first and second busbars. The fingers include a first finger and a last finger at opposing ends of the IDT. A first reflector element is proximate and parallel to the first finger and a second reflector element is proximate and parallel to the last finger. A distance pr between the first reflector element and the first finger and between the second reflector element and the last finger is greater than a pitch p of the IDT.
    Type: Grant
    Filed: December 30, 2021
    Date of Patent: April 15, 2025
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Bryant Garcia, Greg Dyer
  • Patent number: 12267062
    Abstract: There is disclosed acoustic resonators and filter devices. An acoustic resonator includes a substrate having a surface and a single-crystal piezoelectric plate having front and back surfaces, the back surface attached to the surface of the substrate except for a portion of the piezoelectric plate forming a diaphragm that spans a cavity in the substrate. An interdigital transducer (IDT) is formed on the front surface of the single-crystal piezoelectric plate such that interleaved fingers of the IDT are disposed on the diaphragm. The piezoelectric plate and the IDT are configured such that a radio frequency signal applied to the IDT excites a primary shear acoustic mode in the diaphragm. The interleaved fingers comprise a first layer proximate the diaphragm, a second layer over the first layer, and a third layer over the second layer, wherein adjacent layers are different materials.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: April 1, 2025
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Julius Koskela, Bryant Garcia
  • Publication number: 20250105820
    Abstract: An acoustic resonator device is provided that includes a substrate; a piezoelectric layer at least partially supported by the substrate; an interdigital transducer (IDT) at the piezoelectric layer; an acoustic Bragg reflector between the substrate and the piezoelectric layer. The acoustic Bragg reflector includes alternating layers of a first material and a second material having a higher acoustic impedance than the first material. Thicknesses of the first material and the second material of the acoustic Bragg reflector are configured to generate a reflectance frequency band centered around a displaced frequency f0?, the displaced frequency f0? being displaced from a resonance frequency fr of the acoustic resonator device based on a harmonic spur of the resonance frequency fr. In this aspect, the thicknesses of the first material and the second material are measured in a direction normal to the substrate.
    Type: Application
    Filed: September 19, 2024
    Publication date: March 27, 2025
    Inventors: Bryant GARCIA, Tetsuya Kimura
  • Publication number: 20250105816
    Abstract: Resonator and filter devices and methods of fabrication. A resonator chip includes a substrate, a piezoelectric plate, and an acoustic Bragg reflector between the substrate and a back surface of the piezoelectric plate. A conductor pattern on a surface of the piezoelectric plate includes a first plurality of contact pads and an interdigital transducer (IDT). The acoustic Bragg reflector is configured to reflect the shear primary acoustic mode. An interposer has a second plurality of contact pads on a back surface. A seal connects a perimeter of the piezoelectric plate to a perimeter of the interposer. Each contact pad of the first plurality of contact pads is directly connected to a respective contact pad of the second plurality of contact pads.
    Type: Application
    Filed: December 9, 2024
    Publication date: March 27, 2025
    Inventors: Ventsislav Yantchev, Bryant Garcia, Viktor Plesski, Soumya Yandrapalli, Robert B. Hammond, Patrick Turner, Jesson John
  • Patent number: 12255618
    Abstract: An acoustic resonator device includes a conductor pattern formed on a surface of a piezoelectric plate. The conductor pattern includes a first busbar, a second busbar, and n interleaved parallel fingers of an interdigital transducer (IDT), where n is a positive integer. The fingers extend alternately from the first and second busbars. A first finger and an n'th finger are at opposing ends of the IDT. The conductor pattern also includes a first reflector element proximate and parallel to the first finger and a second reflector element proximate and parallel to the n'th finger. A center-to-center distance pr between the first reflector element and the first finger and between the second reflector element and the n'th finger is greater than or equal to 1.2 times a pitch p of the IDT and less than or equal to 1.5 times the pitch p.
    Type: Grant
    Filed: May 18, 2022
    Date of Patent: March 18, 2025
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Bryant Garcia
  • Patent number: 12255625
    Abstract: A filter includes first and second shunt resonators, at least one series resonator connected to the first and second shunt resonators in a ladder filter circuit, and a first ground contact pad. The first shunt resonator has two or more first sub-resonators and the second shunt resonator has two or more second sub-resonators. At least one first sub-resonator and at least one, but less than all, of the two or more second sub-resonators are connected to the first ground contact pad.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: March 18, 2025
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Douglas Jachowski, Ventsislav Yantchev, Bryant Garcia, Patrick Turner
  • Publication number: 20250088167
    Abstract: Acoustic filters, resonators and methods are disclosed. An acoustic filter device includes a substrate; a piezoelectric layer attached to the substrate, wherein at least a portion of the piezoelectric layer is disposed over a cavity of the acoustic resonator device; and an interdigital transducer (IDT) on a surface of the piezoelectric layer, the IDT including interleaved fingers extending at least over the portion of the piezoelectric layer disposed over the cavity. The cavity has at least one rounded corner, and a portion of interleaved fingers extend from at least one busbar. Moreover, at least a portion of the rounded corner of the cavity is under the at least one busbar in a plan view of the piezoelectric layer.
    Type: Application
    Filed: November 26, 2024
    Publication date: March 13, 2025
    Inventors: Kuan ZHANG, James R. COSTA, Andrew KAY, Greg DYER, Viktor PLESSKI, Soumya YANDRAPALLI, Robert B. HAMMOND, Bryant GARCIA, Patrick TURNER, Jesson JOHN, Ventsislav YANTCHEV
  • Patent number: 12244295
    Abstract: An acoustic resonator device, filter devices, and methods of making the same. An acoustic resonator device includes a substrate having a surface and a single-crystal piezoelectric plate having front and back surfaces, where the back surface is attached to the surface of the substrate except for a portion of the piezoelectric plate forming a diaphragm that spans a cavity in the substrate. The device further includes an interdigital transducer formed on the front surface of the piezoelectric plate, where interleaved fingers of the IDT disposed on the diaphragm are configured such that a radio frequency signal applied to the IDT excites a primary shear acoustic mode in the diaphragm. The interleaved fingers include a first layer adjacent the diaphragm and a second layer over the first layer, the second layer having a narrower width than the first layer.
    Type: Grant
    Filed: January 11, 2024
    Date of Patent: March 4, 2025
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Viktor Plesski, Patrick Turner, Robert Hammond, Bryant Garcia, Ventsislav Yantchev, Neal Fenzi, Julius Koskela
  • Publication number: 20250070753
    Abstract: A filter device is provided that includes a substrate; a piezoelectric layer coupled to the substrate either directly or via one or more intermediate layers; a first interdigital transducer (IDT) of a first bulk acoustic resonator device on the piezoelectric layer and having interleaved fingers over a first cavity the first bulk acoustic resonator device; a second IDT of a second bulk acoustic resonator device on the piezoelectric layer and having interleaved fingers over a second cavity of the second bulk acoustic resonator device; a first dielectric layer having a first thickness disposed between the interleaved fingers of the first IDT; and a second dielectric layer having a second thickness disposed between the interleaved fingers of the second IDT. The first thickness is greater than the second thickness.
    Type: Application
    Filed: November 8, 2024
    Publication date: February 27, 2025
    Inventors: Viktor PLESSKI, Soumya YANDRAPALLI, Robert B. HAMMOND, Bryant GARCIA, Patrick TURNER, Jesson JOHN, Ventsislav YANTCHEV
  • Patent number: 12237826
    Abstract: Acoustic resonator devices and acoustic filter devices. An acoustic resonator includes a piezoelectric plate having front and back surfaces, a portion of the piezoelectric plate forming a diaphragm, and a conductor pattern on the front surface, the conductor pattern comprising an interdigital transducer (IDT), interleaved fingers of the IDT on the diaphragm. A ratio of a mark of the interleaved fingers to a pitch of the interleaved fingers is greater than or equal to 0.12 and less than or equal to 0.3. A thickness of the interleaved fingers is greater than or equal to 0.85 times a thickness of the piezoelectric plate and less than or equal to 2.5 times the thickness of the piezoelectric plate.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: February 25, 2025
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Bryant Garcia, Ventsislav Yantchev, Patrick Turner, Viktor Plesski, Julius Koskela, Soumya Yandrapalli, Neal Fenzi, Robert B. Hammond