Patents by Inventor Neal Fenzi

Neal Fenzi 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).

  • Patent number: 12119807
    Abstract: A radio frequency filter includes at least a first sub-filter and a second sub-filter connected in parallel between a first port and a second port. Each of the sub-filters has a piezoelectric plate having front and back surfaces, the back surface attached to a substrate, and portions of the piezoelectric plate forming diaphragms spanning respective cavities in the substrate. A conductor pattern is formed on the front surface of the plate, the conductor pattern includes interdigital transducers (IDTs) of a respective plurality of resonators, with interleaved fingers of each IDT disposed on a respective diaphragm of the plurality of diaphragms. A thickness of the portions of the piezoelectric plate of the first sub-filter is different from a thickness of the portions of the piezoelectric plate of the second sub-filter.
    Type: Grant
    Filed: September 8, 2022
    Date of Patent: October 15, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Andrew Guyette, Neal Fenzi, Greg Dyer, Sean McHugh
  • Patent number: 12119806
    Abstract: Acoustic resonator devices, filers, and methods. An acoustic resonator includes a substrate and a piezoelectric plate, a portion of the piezoelectric plate being a diaphragm spanning a cavity in the substrate. A conductor pattern on a front surface of the piezoelectric plate includes interleaved interdigital transducer (IDT) fingers connected alternately to first and second busbars. The interleaved IDT fingers are on the diaphragm, and the interleaved IDT fingers include at least a first pair of interleaved spiral IDT fingers.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: October 15, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Sean McHugh, Neal Fenzi
  • Patent number: 12095445
    Abstract: There is disclosed acoustic resonators and filter devices. An acoustic resonator includes a substrate and a piezoelectric diaphragm that spans a cavity in the substrate. An interdigital transducer (IDT) has interleaved fingers on the diaphragm. A thickness of the interleaved fingers is greater than or equal to 0.85 times a thickness of the diaphragm and less than or equal to 2.5 times the thickness of the diaphragm.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: September 17, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Bryant Garcia, Robert Hammond, Patrick Turner, Neal Fenzi, Viktor Plesski, Ventsislav Yantchev
  • Patent number: 12095446
    Abstract: Acoustic resonators and 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 including an interdigital transducer (IDT), fingers of the IDT on the diaphragm. 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. The IDT comprises a first portion having a first pitch and a first mark and a second portion having a second pitch and a second mark not equal to the first pitch and first mark.
    Type: Grant
    Filed: September 29, 2023
    Date of Patent: September 17, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Bryant Garcia, Robert B. Hammond, Patrick Turner, Viktor Plesski, Ventsislav Yantchev, Neal Fenzi
  • Patent number: 12057823
    Abstract: Acoustic resonator devices, filters, and methods. An acoustic resonator includes a substrate and a piezoelectric plate, a portion of the piezoelectric plate being a diaphragm spanning a cavity in the substrate. A conductor pattern on a front surface of the piezoelectric plate includes concentric interleaved interdigital transducer (IDT) fingers connected alternately to first and second busbars. The IDT fingers are on the diaphragm.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: August 6, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Sean McHugh, Neal Fenzi, John Koulakis, Greg Dyer
  • Patent number: 12040778
    Abstract: There is disclosed acoustic resonators and filter devices. An acoustic resonator includes a substrate having a surface and a piezoelectric plate having parallel 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 piezoelectric plate such that interleaved fingers of the IDT are disposed on the diaphragm. A thickness of the interleaved fingers of the IDT is greater than or equal to 0.85 times a thickness of the diaphragm and less than or equal to 2.5 times the thickness of the diaphragm.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: July 16, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Bryant Garcia, Robert Hammond, Patrick Turner, Neal Fenzi, Viktor Plesski, Ventsislav Yantchev
  • Patent number: 12021502
    Abstract: Acoustic resonators and 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 including a multi-mark interdigital transducer (IDT), with fingers of the IDT on the diaphragm. 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 28, 2021
    Date of Patent: June 25, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Greg Dyer, Bryant Garcia, Julius Koskela, Robert B. Hammond, Patrick Turner, Viktor Plesski, Ventsislav Yantchev, Neal Fenzi
  • Patent number: 11996822
    Abstract: A wide bandwidth time division duplex (TDD) transceiver includes a transmitter, a receiver, and a bandpass filter implemented with a plurality of acoustic resonators including at least one shunt resonator and at least one series resonator. A transmit/receive switch is configured to selectively connect a first terminal of the bandpass filter to either an output of the transmitter or an input of the receiver. Each of the plurality of acoustic resonators is a high power transversely-excite film bulk acoustic resonator.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: May 28, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Russ Reisner, Neal Fenzi, Robert B. Hammond, Patrick Turner, Bryant Garcia
  • Patent number: 11996827
    Abstract: There are disclosed acoustic resonators, filter devices, and methods of fabricating acoustic resonators and filter devices. An acoustic resonator includes a piezoelectric plate having front and back surfaces, the back surface attached to a surface of a substrate except for portions of the piezoelectric plate forming a diaphragm spanning a cavity in the substrate. A conductor pattern on the front surface includes an interdigital transducer (IDT) with interleaved fingers of the IDT disposed on the diaphragm. A plurality of holes is in the diaphragm, wherein each of the plurality of holes is configured to scatter spurious modes in the diaphragm.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: May 28, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Ventsislav Yantchev, Julius Koskela, Viktor Plesski, Neal Fenzi, Patrick Turner
  • Patent number: 11996825
    Abstract: Acoustic filters are disclosed. A bandpass filter has a passband between a lower band edge and an upper band edge. The bandpass filter includes a plurality of transversely-excited film bulk acoustic resonators (XBARs) connected in a ladder filter circuit. The plurality of XBARs includes at least one lithium tantalate (LT) XBAR and at least one lithium niobate XBAR. Each of the at least one LT XBAR includes an LT piezoelectric plate with Euler angles (0°, ?, 0°), where ? is greater than zero and less than or equal to 40 degrees.
    Type: Grant
    Filed: December 24, 2020
    Date of Patent: May 28, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Andrew Guyette, Neal Fenzi, Bryant Garcia
  • Publication number: 20240162886
    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: Application
    Filed: January 11, 2024
    Publication date: May 16, 2024
    Inventors: Viktor PLESSKI, Patrick TURNER, Robert HAMMOND, Bryant GARCIA, Ventsislav YANTCHEV, Neal FENZI, Julius KOSKELA
  • Patent number: 11984873
    Abstract: There are disclosed acoustic diplexers and radios incorporating the acoustic diplexers. A diplexer includes common port, a low band port, a high band port, n low band sub-filters, and n high band sub-filters, where n is an integer greater than one. Each low band sub-filter has a first sub-filter port connected to the common port and a second sub-filter port connected to the low band port. Each high band sub-filter has a first sub-filter port connected to the common port and a second sub-filter port connected to the high band port. A first acoustic resonator is connected from the common port to ground and a second acoustic resonator is connected from the low band port to ground. The first and second acoustic resonators are configured to create respective transmission zeros adjacent to a lower edge of a passband of the diplexer.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: May 14, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Andrew Guyette, Neal Fenzi
  • Publication number: 20240154597
    Abstract: An acoustic resonator is provided that includes a substrate; a piezoelectric layer having a portion that forms a diaphragm over a cavity; and IDT on the piezoelectric layer that includes a first conductor level including first and second busbars disposed on respective portions of the piezoelectric layer, a first set of elongated fingers extending from the first bus bar onto the diaphragm, and a second set of elongated fingers extending from the second bus bar onto the diaphragm, the second set of elongated fingers interleaved with the first set of elongated fingers. The acoustic resonator also includes a second conductor level over the piezoelectric layer and covering at least portions of the first and second busbars.
    Type: Application
    Filed: January 12, 2024
    Publication date: May 9, 2024
    Inventors: Greg DYER, Bryant GARCIA, Doug JACHOWSKI, Robert HAMMOND, Neal FENZI, Ryo WAKABAYASHI
  • Patent number: 11973489
    Abstract: A radio frequency filter includes at least a first sub-filter and a second sub-filter connected in parallel between a first port and a second port. Each of the sub-filters has a piezoelectric plate having front and back surfaces, the back surface attached to a substrate, and portions of the piezoelectric plate forming diaphragms spanning respective cavities in the substrate. A conductor pattern is formed on the front surface of the plate, the conductor pattern includes interdigital transducers (IDTs) of a respective plurality of resonators, with interleaved fingers of each IDT disposed on a respective diaphragm of the plurality of diaphragms. A thickness of the portions of the piezoelectric plate of the first sub-filter is different from a thickness of the portions of the piezoelectric plate of the second sub-filter.
    Type: Grant
    Filed: September 8, 2022
    Date of Patent: April 30, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Andrew Guyette, Neal Fenzi, Greg Dyer, Sean McHugh
  • Patent number: 11955951
    Abstract: There are disclosed matrix filters having an input port and sub-filters connected between the input port and respective output ports. Each of the sub-filters includes a ladder circuit with n transversely-excited film bulk acoustic resonator (XBAR) series elements and n?1 capacitor shunt elements, where n, the order of the sub-filter, is an integer greater than 2. Each sub-filter further has a first switch in parallel with a first capacitor shunt element and a second switch in parallel with a last capacitor shunt element.
    Type: Grant
    Filed: September 19, 2022
    Date of Patent: April 9, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Andrew Guyette, Neal Fenzi, Michael Eddy, Bryant Garcia
  • Publication number: 20240113681
    Abstract: Filter devices and methods are disclosed. A single-crystal piezoelectric plate is attached to substrate, portions of the piezoelectric plate forming a plurality of diaphragms spanning respective cavities in the substrate. A conductor pattern formed on the piezoelectric plate defines a low band filter including low band shunt resonators and low band series resonators and a high band filter including high band shunt resonators and high band series resonators. Interleaved fingers of interdigital transducers (IDTs) of the low band shunt resonators are disposed on respective diaphragms having a first thickness, interleaved fingers of IDTs of the high band series resonators are disposed on respective diaphragms having a second thickness less than the first thickness, and interleaved fingers of IDTs of the low band series resonators and the high band shunt resonators are disposed on respective diaphragms having thicknesses intermediate the first thickness and the second thickness.
    Type: Application
    Filed: December 13, 2023
    Publication date: April 4, 2024
    Inventors: Andrew GUYETTE, Neal FENZI, Patrick TURNER
  • Patent number: 11942922
    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: March 16, 2022
    Date of Patent: March 26, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Bryant Garcia, Ventsislav Yantchev, Patrick Turner, Viktor Plesski, Julius Koskela, Soumya Yandrapalli, Neal Fenzi, Robert B. Hammond
  • Patent number: 11929731
    Abstract: Acoustic resonators and 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 including 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. The pitch of the interleaved fingers is greater than or equal to 6 times a thickness of the piezoelectric plate and less than or equal to 12.5 times the thickness of the piezoelectric plate.
    Type: Grant
    Filed: December 24, 2021
    Date of Patent: March 12, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Bryant Garcia, Ventsislav Yantchev, Patrick Turner, Viktor Plesski, Julius Koskela, Soumya Yandrapalli, Neal Fenzi, Robert B. Hammond
  • Patent number: 11929733
    Abstract: There are disclosed matrix filters having an antenna port, receive ports and transmit ports. A receive matrix filter is coupled between each receive port and the antenna port; an a transmit matrix filter is coupled between the antenna port and each transmit port. An impedance at the receive port is matched to an input impedance of a low noise amplifier (LNA), an impedance at the transmit port is match to an output impedance of a power amplifier (PA), and an impedance at the antenna port is match an impedance of an antenna.
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: March 12, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Andrew Guyette, Neal Fenzi, Michael Eddy, Bryant Garcia
  • Patent number: 11909381
    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: December 23, 2020
    Date of Patent: February 20, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Viktor Plesski, Patrick Turner, Robert Hammond, Bryant Garcia, Ventsislav Yantchev, Neal Fenzi, Julius Koskela