Patents Examined by Hafizur Rahman
  • Patent number: 10886897
    Abstract: A filter device includes a substrate and first to third filters provided on the substrate and each including an input terminal and an output terminal. A center frequency of a pass band of the first filter is lower than a center frequency of a pass band of the second filter, and the center frequency of the pass band of the second filter is lower than a center frequency of a pass band of the third filter. Of the first and third filters, when the filter having the center frequency of the pass band close to the center frequency of the filter is defined as a proximity filter and the other is defined as a non-proximity filter, an input terminal and an output terminal of the proximity filter are not adjacent to an input terminal and an output terminal of the second filter.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: January 5, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Junpei Yasuda
  • Patent number: 10886895
    Abstract: Even when frequency characteristics are changed in association with multiple communication bands, an attenuation required for a specific frequency band outside a pass band is obtained. A frequency-variable filter (10) includes multiple series-arm resonators (111, 112, 113), multiple parallel-arm resonators (121, 122, 123), a variable capacitor (21), and an inductor (31) having a fixed inductance. The multiple series-arm resonators (111, 112, 113) and the multiple parallel-arm resonators (121, 122, 123) are connected in a ladder shape. The variable capacitor (21) is connected in series with the parallel-arm resonator (121). The fixed inductor (31) is connected in series with the parallel-arm resonator (123).
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: January 5, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Masakazu Tani
  • Patent number: 10886887
    Abstract: An aluminum nitride film contains a Group IV element and a Group II or Group XII element, and an atomic composition ratio of the Group II or Group XII element to the Group IV element is less than 1.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: January 5, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Kuniaki Tanaka, Tokihiro Nishihara
  • Patent number: 10886893
    Abstract: Reduced-size guided-surface acoustic wave (SAW) resonators are disclosed. Guided-SAW resonators can achieve high acoustic coupling and acoustic quality Q, but may have a larger surface area compared with a traditional temperature compensated (TC)-SAW resonator. In an exemplary aspect, a guided-SAW device is fabricated with a metal-insulator-metal (MIM) capacitor to produce a guided-SAW which has the same high Q with a surface area which is the same or less than traditional TC-SAW resonators.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: January 5, 2021
    Assignee: Qorvo US, Inc.
    Inventors: Kevin J. Gamble, Alan S. Chen
  • Patent number: 10879866
    Abstract: A filter circuit is connected between a heating source and a load for filtering the load, and includes an inductor branch and a capacitor branch connected in parallel. The inductor branch includes a one-piece structured integrated component, and the integrated component is configured with a transformer function member and an inductor function member. The inductor function member is connected in series between the heating source and the transformer function member for filtering the load. The transformer function member is connected in parallel with the load for transmitting a heating electric signal output by the heating source to the load.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: December 29, 2020
    Assignee: BEIJING NAURA MICROELECTRONICS EQUIPMENT CO., LTD.
    Inventors: Xiaoyang Cheng, Gang Wei, Haitao Yu
  • Patent number: 10879865
    Abstract: Disclosed are apparatus and associated methodology providing for fixed components that exhibit tailorable variations in frequency response depending on the applied frequencies over the component's useful frequency range. The presently disclosed subject matter provides improved operational characteristics of generally known transmission line capacitor devices by providing a parallel resistive component constructed as a portion of the dielectric separating electrodes corresponding to a capacitor.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: December 29, 2020
    Assignee: AVX Corporation
    Inventor: Gheorghe Korony
  • Patent number: 10873302
    Abstract: A four-wave mixing transmission line (3) including: an input (15, 17, 19) arranged to receive: a first pump signal (7a) having a first pump frequency; a second pump signal (7b), having a second pump frequency, different to the first pump frequency; and an input signal to be amplified (5); a non-linear medium (3a) having an intrinsic dispersion relationship, the medium (3a) arranged to allow interaction between the input signal (5), the first pump signal (7a) and the second pump signal (7b), such that the input signal (5) is amplified and an idler signal (9) is generated and amplified; and a plurality of dispersion control elements (31, 33, 49), the dispersion control elements (31, 33, 49) arranged to alter the dispersion relationship of the medium (3a) to diverge from the intrinsic dispersion relationship at one or more frequencies, such that the total phase difference between the input signal, (5) the first pump signal (7a), the second pump signal (7b) and the idler signal (9) is kept at zero or substantiall
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: December 22, 2020
    Assignee: Oxford University Innovation Limited
    Inventor: Boon Kok Tan
  • Patent number: 10873319
    Abstract: Radio frequency (RF) filtering devices, and particularly compensation structures for RF filtering devices are disclosed. Representative RF filtering devices are described that include compensation structures configured to adjust, reduce, or cancel leakage signals within the RF filtering devices, thereby providing improved isolation. Compensation structures may include surface acoustic wave (SAW) devices having multiple interdigital transducers (IDT) that are longitudinally coupled between two reflective structures. Different IDTs of a SAW device may be electrically connected to an RF filtering device, and at least one IDT of the SAW device may comprise an electrically floating electrode that provides the ability to further tune acoustic waves. Depending on the application, the compensation structure may be electrically connected to different portions of the RF filtering device. In certain embodiments, the RF filtering device is an RF duplexing device.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: December 22, 2020
    Assignee: Qorvo US, Inc.
    Inventor: Manjunath Swamy
  • Patent number: 10873318
    Abstract: Filter circuits having acoustic wave resonators in a transversal configuration are disclosed. In the transversal configuration, the acoustic wave resonators are arranged transverse to an input and output port of the filter circuit. As such, all the acoustic wave resonators of the filter circuit are connected to the input port and connected to the output port. In the transversal configuration, the filter circuit can be designed for any transfer function without being restricted to a coupling coefficient of a piezoelectric material used in the acoustic wave resonators. In this regard, the filter circuit can achieve very wideband filter responses, multiband responses, and/or responses with arbitrary position of transmission zeros. The filter circuit having the transversal configuration can also be designed for complex transmission zeros for phase equalization.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: December 22, 2020
    Assignee: Qorvo US, Inc.
    Inventors: Jordi Mateu, Carlos Collado Gomez, Alberto Hueltes Escobar, Robert Aigner, Nadim Khlat
  • Patent number: 10868512
    Abstract: There is disclosed acoustic resonators and filter devices. An acoustic resonator includes a substrate having a surface and a Z-cut lithium niobate 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 single-crystal piezoelectric plate such that interleaved fingers of the IDT are disposed on the diaphragm. The IDT is configured to excite a primary acoustic mode in the diaphragm in response to a radio frequency signal applied to the IDT. A thickness of the interleaved fingers of the IDT is greater than or equal to 0.85 times a thickness of the piezoelectric plate.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: December 15, 2020
    Assignee: Resonant Inc.
    Inventors: Bryant Garcia, Robert Hammond, Patrick Turner, Neal Fenzi, Viktor Plesski, Ventsislav Yantchev
  • Patent number: 10868513
    Abstract: There are disclosed acoustic resonators and radio frequency filter devices. An acoustic resonator includes a piezoelectric plate having a front surface. A conductor pattern is formed on the front surface, the conductor pattern including interdigital transducers (IDTs) of one or more pairs of sub-resonators, each pair consisting of two sub-resonators. The two sub-resonators of each pair of sub-resonators are positioned symmetrically about a central axis.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: December 15, 2020
    Assignee: Resonant Inc.
    Inventor: Ventsislav Yantchev
  • Patent number: 10862458
    Abstract: An acoustic wave device includes first to third acoustic wave resonators connected in series, and the first acoustic wave resonator and the third acoustic wave resonator are respectively disposed on one side and another side of the second acoustic wave resonator. In the first to third acoustic wave resonators, a first common busbar is connected to one of reflectors of the first and second acoustic wave resonators, and a second common busbar is connected to one of reflectors of the second and third acoustic wave resonators.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: December 8, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Yasuaki Shin
  • Patent number: 10862457
    Abstract: A filter includes: a series part disposed between a signal input terminal and a signal output terminal, and including at least one first bulk-acoustic resonator; an inductor portion including a first inductor disposed between ends of the series part and a second inductor having a first end connected to a connection node of the series part and the first inductor; and a shunt part disposed between a second end of the second inductor and a ground, and including at least one second bulk-acoustic resonator, wherein a resonant frequency of the at least one second bulk-acoustic resonator is higher than a resonant frequency of the at least one first bulk-acoustic resonator.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: December 8, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Yoon Sok Park, Hyun Jun Kim, Sung Tae Kim, Won Kyu Jeung
  • Patent number: 10847863
    Abstract: A method and a system (13) for evaluating a lower filter part (2) of a cavity filter including a bottom plate from which wall portions and at least one resonating element extend in an upward direction, wherein the method comprises: —scanning the lower filter part using a laser scanning assembly (14) to collect data relating to shapes and dimensions of the lower filter part, —comparing the collected data with reference data to determine whether the lower filter part fulfils predetermined quality requirements. A method for manufacturing a cavity filter includes evaluating a filter body of the lower filter part prior to assembling the cavity filter, wherein the step of assembling the cavity filter is only carried out if the filter body fulfils the predetermined quality requirements.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: November 24, 2020
    Assignee: Syntronic AB
    Inventors: Peter Adamsson, Lars Holmlund
  • Patent number: 10847862
    Abstract: A high-frequency substrate contains a carrier substrate, which has at least one fastening element. The fastening element is deposited on the outer region of the carrier substrate and protrudes over the outer region of the carrier substrate.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: November 24, 2020
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Christian Pinta, Mathias Nagel, Bertrand Thomas
  • Patent number: 10840576
    Abstract: Design, application and implementations of magnetic loops and ring structures are disclosed which may be used to favorably shape or alter electromagnetic fluxes around the transmission lines or waveguides. In transmission lines, application of this system of rings offers opportunities in performance tuning, for example, to achieve more bandwidth or to adjust port impedances. In waveguides, these structures allow selective suppression of excitation of transverse electromagnetic modes (TEMs), hence improving TEM modal purities. The system of rings includes a substrate and a conductive structure for propagating an electromagnetic signal, the conductive structure in contact with the substrate. The device also includes an electrically conductive magnetic, non-conductive magnetic or metallic ring structure positioned within the substrate and proximate to the conductive structure.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: November 17, 2020
    Assignee: THE BOEING COMPANY
    Inventor: Alireza Shapoury
  • Patent number: 10840881
    Abstract: A longitudinally coupled resonator acoustic wave filter includes first, second, and third IDT electrodes disposed on a piezoelectric substrate. The first, second, and third IDT electrodes include first electrode fingers and second electrode fingers. The first, second, and third IDT electrodes include narrow-pitch electrode finger portions in which the pitch between electrode fingers is narrower than in the remaining electrode finger portions. In the first, second, and third IDT electrodes, an overlap area includes a central area and first and second edge areas at opposite ends of the central area in the direction in which the first and second electrode fingers extend. In the remaining electrode finger portions the first electrode fingers and the second electrode fingers include wide portions in the first or second edge area.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: November 17, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Kazuhiro Takigawa
  • Patent number: 10840885
    Abstract: A filter and a method for forming a filter are disclosed. In an embodiment a filter includes a first port, a second port and a signal path between the first port and the second port. The filter further includes a plurality of series resonators electrically connected in series in the signal path, a plurality of shunt paths, each electrically connecting the signal path to ground and one parallel resonator electrically connected in each shunt path, wherein at least one series resonator is an electroacoustic resonator, and wherein at least one parallel resonator comprises one acoustically inactive capacitor or an electrical connection of an acoustically active resonator and a de-tuning coil.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: November 17, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Oleksandr Gavryliuk, Mykola Shevelov, Petro Komakha, Georgiy Sevskiy, Alexander Chernyakov, Wai San Wong
  • Patent number: 10840888
    Abstract: A multiplexer includes a transmission-side filter, a reception-side filter, and a cancel circuit connected between a node M and a node N to cancel out a component in a predetermined frequency band that flows along first and second paths. The cancel circuit includes at least one longitudinally-coupled resonator. An average pitch between electrode fingers of interdigital transducer electrodes of the at least one longitudinally-coupled resonator is narrower than an average pitch between electrode fingers of interdigital transducer electrodes of each of series arm resonators and parallel arm resonators that determine the pass band of the transmission-side filter and an average pitch between electrode fingers of interdigital transducer electrodes of each of series arm resonators and parallel arm resonators that determine the pass band of the reception-side filter.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: November 17, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Toshiaki Takata
  • Patent number: 10833727
    Abstract: Aspects of the subject disclosure may include, a system configured for generating a signal, and inducing, by a coupler, an electromagnetic wave that propagates along a physical transmission medium. The coupler can be configured to convert the signal into a plurality of wave modes that combine to form the electromagnetic wave having an electromagnetic field configuration that reduces leakage of the electromagnetic wave as the electromagnetic wave propagates along the physical transmission medium. Other embodiments are disclosed.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: November 10, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Emilio Alessandro Nanni, Paul Shala Henry, Liling Xiao, Jeffrey Michael Neilson