Patents Examined by Dean O Takaoka
  • Patent number: 11437973
    Abstract: A surface acoustic wave device using a longitudinally polarized guided wave comprises a composite substrate comprising a piezoelectric layer formed over a base substrate, wherein the crystalline orientation of the piezoelectric layer with respect to the base substrate is such that, the phase velocity of the longitudinally polarized wave is below the critical phase velocity of the base substrate at which wave guiding within the piezoelectric layer vanishes. A method of fabrication of such surface acoustic wave device is also disclosed.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: September 6, 2022
    Assignee: FREC'N'SYS
    Inventors: Sylvain Ballandras, Florent Bernard, Emilie Courjon
  • Patent number: 11407124
    Abstract: A rotary joint according to an aspect of the present disclosure includes a first microstrip line, a second microstrip line, a transmitting circuit connected to one end of the first microstrip line and configured to output a communication signal, a transmitting-side terminator connected to the other end of the first microstrip line, a receiving-side terminator connected to one end of the second microstrip line, and a receiving circuit connected to the other end of the second microstrip line and configured to receive the communication signal, in which the first and second microstrip lines and are set along at least a part of a circular ring having a circumferential length equal to an integral multiple of a wavelength of a traveling wave with which the communication signal propagates through the microstrip lines.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: August 9, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohisa Takai, Yoshihiko Takeuchi
  • Patent number: 11405021
    Abstract: A filter device includes a filter circuit that is connected to terminals, is defined by a first acoustic wave resonator that has a first frequency band as a pass band, and an additional circuit that is connected in parallel to at least one first acoustic wave resonator between the terminal and the terminal. The additional circuit is defined by a second acoustic wave resonator in which an electromechanical coupling coefficient of the additional circuit is different from an electromechanical coupling coefficient of the filter circuit.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: August 2, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.452644
    Inventor: Masato Araki
  • Patent number: 11405013
    Abstract: Embodiments of this disclosure relate to acoustic wave filters configured to filter radio frequency signals. An acoustic wave filter includes a first bulk acoustic wave resonator on a substrate, a second bulk acoustic wave resonator on the substrate, a conductor electrically connecting the first bulk acoustic wave resonator in anti-series with the second bulk acoustic wave resonator, and an air gap positioned between the conductor and a surface of the substrate. The air gap can reduce parasitic capacitance associated with the conductor. Acoustic wave filters disclosed herein can suppress a second harmonic.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: August 2, 2022
    Assignee: Skyworks Global Pte. Ltd.
    Inventors: Kwang Jae Shin, Renfeng Jin, Li Chen
  • Patent number: 11394096
    Abstract: In a waveguide system that includes a bifurcated ferrite loaded waveguide section, the waveguide used for at least the bifurcated ferrite loaded waveguide section, and preferably the waveguides for each of the other components of the waveguide system, is provided in the form of an aluminum waveguide part, or a part of another material having comparable properties, most suitably in the form of an aluminum casting. The aluminum part is either entirely or at least partially copper plated and preferably includes aluminum waveguide flanges.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: July 19, 2022
    Inventors: Ray M. Johnson, Ray Kniffen, Jr.
  • Patent number: 11387536
    Abstract: Provided is a mount component that is for forming a directional coupler consisting of a main line and a sub line. Out of the main line and the sub line, only the sub line is formed on or in the mount component. The main line is formed on or in a mounting substrate on which the mount component is mounted and is not formed on or in the mount component. When the mount component is mounted on the mounting substrate, the main line and the sub line electromagnetically couple with each other and as a result a directional coupler is formed.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: July 12, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Takayuki Tomita
  • Patent number: 11381218
    Abstract: A high-frequency module includes a high-frequency switch, filters (21 to 23), (31 to 33), and connection circuits (41 to 46). The high-frequency switch has filter-side terminals (Ps1 to Ps 6). The filters (21, 22, 23) each include a plurality of filters having characteristics different from each other. The filters (31, 32, 33) each include one type of filter. The connection circuits (41, 42, 43) connect the terminals (Ps1, Ps2, Ps3) of the high-frequency switch to the common terminals (Pc21, Pc22, Pc23) of the filters (21, 22, 23), respectively. The connection circuits (44, 45, 46) connect the terminals (Ps4, Ps5, Ps6) of the high-frequency switch to the filters (31, 32, 33), respectively. The connection circuits (41, 42, 43) are shorter than the connection circuits (44, 45, 46).
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: July 5, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yukiya Yamaguchi, Shun Harada
  • Patent number: 11381216
    Abstract: Wideband baluns with enhanced amplitude and phase balance are provided. The wideband balun includes a first transmission line connected between a first port and a third port, and a second transmission line connected between a second port and a fourth port, and a third transmission line connected between the third port and a reference voltage, such as ground. To enhance phase and/or amplitude balance of the wideband balun, the wideband balun further includes a compensation structure operable to provide at least one of capacitive compensation or inductive compensation to balance the wideband balun. For example, in certain implementations, the compensation structure includes at least one of (i) a capacitor connected between the first port and the second port or (ii) a fourth transmission line connected between the first transmission line and the third port.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: July 5, 2022
    Assignee: Analog Devices, Inc.
    Inventors: Song Lin, Mir A. Faiz, Xudong Wang, Donghyun Jin, Bin Hou
  • Patent number: 11374551
    Abstract: The invention relates to an acoustically coupled thin-film BAW filter, comprising a piezoelectric layer, an input-port on the piezoelectric layer changing electrical signal into an acoustic wave (SAW, BAW), and an output-port on the piezoelectric layer changing acoustic signal into electrical signal. In accordance with the invention the ports include electrodes positioned close to each other, and the filter is designed to operate in first order thickness-extensional TE1 mode.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: June 28, 2022
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Johanna Meltaus, Tuomas Pensala
  • Patent number: 11374300
    Abstract: A directional coupler according to various embodiment and an electronic device having the same are provided. The directional coupler includes a first layer having at least one conductive portion, a second layer disposed adjacent to the first layer in a first direction and having at least one conductive plate corresponding to the conductive portion of the first layer, a third layer disposed adjacent to the second layer in the first direction and including an RF signal transmission line, a fourth layer disposed adjacent to the third layer in the first direction and having a conductive line wound with at least one turn, and at least one conductive via electrically connecting the at least one conductive plate of the second layer and the conductive line of the fourth layer which is wound with at least one turn.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: June 28, 2022
    Inventors: Jonghyun Park, Dongil Yang, Jihee Kang, Youngjoon Kim
  • Patent number: 11362642
    Abstract: An acoustic wave filter device includes a longitudinally coupled resonator acoustic wave filter on a series arm that connects an input terminal and an output terminal, first and second parallel arm resonators on first and second parallel arms that connect the series arm and a ground potential, an input-side ground port of the longitudinally coupled resonator acoustic wave filter and a ground port of at least one of the first and second parallel arm resonators are connected in common, an output-side ground port of the longitudinally coupled resonator acoustic wave filter and a ground port of at least another of the first and second parallel arm resonators are connected in common, and an electrostatic capacitance of the first parallel arm resonator is different from an electrostatic capacitance of the second parallel arm resonator.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: June 14, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Hiroshi Muranaka
  • Patent number: 11362643
    Abstract: A multiplexer includes first and second filters and additional circuits. The first filter is coupled to transmit and antenna terminals, the second filter is coupled to receive and antenna terminals, one additional circuit is coupled to transmit and receive terminals, and another additional circuit is coupled to transmit and antenna terminals. Pass bands of the first and second filters are respectively first and second frequency bands, and the second frequency band including a center frequency higher than a center frequency of the first frequency band. The one additional circuit includes a first resonator group including first IDT electrodes aligned in a propagation direction of an acoustic wave. The other additional circuit includes a second resonator group including second IDT electrodes aligned in the propagation direction. An average pitch of electrode fingers is greater among the first IDT electrodes than the second IDT electrodes.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: June 14, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Toshiaki Takata
  • Patent number: 11362644
    Abstract: A switch module includes a first terminal, first and second filters, and first and second switches. Impedance of the first filter for a signal in a stop band is capacitive. When the first switch is turned OFF, impedance of the first switch is capacitive, and impedance of the first filter seen from an end portion of the first switch connected to the first filter is not in a short state and impedance of the first filter seen from the first terminal is in an open state.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: June 14, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Takayuki Tomita, Daisuke Watanabe
  • Patent number: 11362407
    Abstract: A directional coupler may include a first coupled section comprising a first and a second coupled transmission lines, the first coupled transmission line having a first end coupled to an input port. The directional coupler may also include a second coupled section comprising a first and a second coupled transmission lines. The directional coupler may also include a third coupled section comprising a first and a second coupled transmission lines. The first coupled transmission line of the third coupled section has a first end coupled to a second end of the second coupled transmission line of the second coupled section and a second end coupled to an output port. The directional coupler may further include a delay section. A total electrical length of the first coupled section, the second coupled section, the third coupled section, and the delay section is about 90 degrees.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: June 14, 2022
    Assignee: TTM Technologies Inc.
    Inventors: Chong Mei, Omar Eldaiki, Samir Tozin
  • Patent number: 11349454
    Abstract: An acoustic wave component is disclosed. The acoustic wave component can include a bulk acoustic wave resonator and a surface acoustic wave device. The bulk acoustic wave resonator can include a first portion of a glass substrate, a first piezoelectric layer positioned on the glass substrate, and electrodes positioned on opposing sides of the first piezoelectric layer. The surface acoustic wave device can include a second portion of the glass substrate, a second piezoelectric layer positioned on the glass substrate, and an interdigital transducer electrode on the second piezoelectric layer.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: May 31, 2022
    Assignee: SKYWORKS GLOBAL PTE. LTD.
    Inventors: Kwang Jae Shin, Hiroyuki Nakamura
  • Patent number: 11349185
    Abstract: Methods and apparatus for providing a frequency selective limiters (FSL) having a free-standing Yttrium Iron Garnet (YIG) film with first and second opposing surfaces. A metal plane is disposed on one surface of the YIG film to provide the YIG film with a metalized surface. At least one transducer is disposed on the other surface of the YIG film with a respective ends coupled to the metalized surface of the YIG film.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: May 31, 2022
    Assignee: Metamagnetics, Inc.
    Inventor: Michael Geiler
  • Patent number: 11349183
    Abstract: A waveguide switch for switching between an ON-state and an OFF-state for a waveguide channel, including: a moveable waveguide switch body including: an input opening for receiving an electromagnetic wave, an output opening for releasing an electromagnetic wave, wherein the waveguide switch body further includes a blocking element arranged such that in the ON state, an electromagnetic wave may pass from the input opening to the output opening, and in the OFF state the blocking element substantially impedes an electromagnetic wave traveling from the input opening to the output opening, whereby the switch from the ON state to the OFF state is a rotational or translation movement of the waveguide switch body. Also, a waveguide system employing such a switch and a method of manufacturing such a switch. Contactless switching is provided in a high-frequency system.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: May 31, 2022
    Assignee: RISE RESEARCH INSTITUTES OF SWEDEN AB
    Inventors: Sofia Rahiminejad, Peter Enoksson, Sjoerd Haasl
  • Patent number: 11342902
    Abstract: A communications module includes a module substrate composed of a plurality of insulating layers, a plurality of wiring layers, and a plurality of wiring vias; and a filter module disposed on the module substrate. At least one of the wiring layers overlaps the filter module in a thickness direction of the module substrate and is connected to a ground potential to function as a ground layer, and an entirety of at least one of the wiring layers and at least one of the wiring vias disposed in a first region in the thickness direction of the module substrate between the filter module and the ground layer are electrically connected to the filter module.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: May 24, 2022
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Chan Yong Jeong
  • Patent number: 11336262
    Abstract: A multiplexer includes: a first filter connected between a common terminal and a first terminal; and a second filter connected between the common terminal and a second terminal, a passband of the second filter being higher than a passband of the first filter, the second filter including series resonators connected in series and parallel resonators connected in parallel between the common terminal and the second terminal, each of the parallel resonators including a pair of comb-shaped electrodes including electrode fingers and a pair of reflectors sandwiching the pair of comb-shaped electrodes therebetween and including grating bars, PR1>PD1 where PR1 represents an average pitch of the grating bars of a parallel resonator closest to the common terminal among the parallel resonators and PD1 represents an average pitch of the electrode fingers of the parallel resonator closest to the common terminal.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: May 17, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Hiroki Kondo
  • Patent number: 11335987
    Abstract: A directional coupler (1) includes a surface mounted component (10) and a mounting substrate (20) on which the surface mounted component (10) is mounted. Among a main line and a sub line of the directional coupler (1), the main line is formed of a first line (31) and a second line (32), one end (311) of the first line (31) and one end (321) of the second line (32) being connected to each other, the sub line is formed of a third line (33). The first line (31) and the third line (33) are formed in the surface mounted component (10). The second line (32) is formed on or in the mounting substrate (20). Furthermore, another end (312) of the first line (31) and another end (322) of the second line (32) may be connected to each other.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: May 17, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Daisuke Tokuda