Utilizing Electromechanical Transducer Patents (Class 333/133)
  • Filter, duplexer, communication module and communication device
    Patent number: 9236848
    Abstract: The filter includes: a primary transducer connected to a primary terminal; a secondary transducer connected to a plurality of secondary terminals; and a coupling transducer for mechanically coupling the primary transducer and the secondary transducer.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: January 12, 2016
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Masanori Ueda, Takashi Matsuda, Tokihiro Nishihara
  • Ladder-type surface acoustic wave filter and duplexer including the same
    Patent number: 9203376
    Abstract: A ladder-type surface acoustic wave filter includes a first series resonator having the lowest resonance frequency among a plurality of series resonators; and a second series resonator having a resonance frequency higher than the first series resonator. The film thickness of a dielectric film in the region where the first series resonator is formed is larger than that of a dielectric film in the region where the second series resonator is formed.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: December 1, 2015
    Assignee: SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO., LTD.
    Inventors: Tetsuya Tsurunari, Joji Fujiwara, Hiroyuki Nakamura, Hidekazu Nakanishi
  • Acoustic wave device
    Patent number: 9197189
    Abstract: An acoustic wave device includes resonator structures each including resonators arranged next to each other, and each of the resonator structures is excited in at least two vibration modes as the resonators thereof are coupled and resonate with each other. At least one of the resonator structures exhibits stronger resonance characteristics in one of the vibration modes than in the other vibration mode or modes within the filter band.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: November 24, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Takashi Miyake
  • Signal separation apparatus
    Patent number: 9197193
    Abstract: A signal separation apparatus includes a piezoelectric substrate on which a transmission filter and a reception filter are provided. The reception filter includes first, second and third longitudinally coupled resonator-type elastic wave filter devices and the first, second and third longitudinally coupled resonator-type elastic wave filter devices each including a two-stage cascade connection structure. The signal separation apparatus further includes virtual ground wiring lines that are not connected to a ground potential and that connect ground terminals of adjacent longitudinally coupled resonator-type elastic wave filter units to each other on at least one of a first, second, and third group-A longitudinally coupled resonator-type elastic wave filter units side and a first, second, and third group-B longitudinally coupled resonator-type elastic wave filter units side.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: November 24, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Yuichi Takamine
  • Electronic component module
    Patent number: 9197190
    Abstract: An electronic component module includes: a multi-layered wiring board formed by stacking insulating layers, an inner wiring layer formed between the insulating layers, and a surface wiring layer formed on an outermost insulating layer of the insulating layers; and an acoustic wave device located inside the multi-layered wiring board, wherein the acoustic wave device includes a functional element and a sealing portion, the functional element being located on a substrate and exciting an acoustic wave, and the sealing portion sealing the functional element so as to form an air-space above the functional element, and a terminal portion of the surface wiring layer does not overlap the air-space of the acoustic wave device as viewed from a stacking direction of the multi-layered wiring board, the terminal portion being a region to which a terminal of an electronic component is fixed in the surface wiring layer.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: November 24, 2015
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Takashi Yamashita
  • DMS filter having improved signal suppression in the stop band
    Patent number: 9178490
    Abstract: A DMS filter has improved signal suppression in fly-back. At least two transformers of a first type are connected in parallel between a common node of the signal path and a ground connection/reference potential. A concentrated element is connected in the signal path of said transformers of the first type, so that the voltages present at the first transformers are different from each other.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: November 3, 2015
    Assignee: EPCOS AG
    Inventors: Andreas Detlefsen, Ravi Challa
  • High-frequency filter
    Patent number: 9166558
    Abstract: Assigning multiple functions to a PA and simplifying wiring and circuits are achieved without using switches in a transmission-and-reception system using a high-frequency filter that supports multiple bands. Provided is a high-frequency filter including: first and second transmission filters; first and second reception filters; and a matching circuit connected to input sides of the first and second transmission filters. Transmission signals are inputted to the first and second transmission filters via the matching circuit. A resonator forming the matching circuit is serially connected to an input side of, among the first and second transmission filters, a filter whose passband is a higher frequency band.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: October 20, 2015
    Assignee: SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO., LTD.
    Inventors: Joji Fujiwara, Tetsuya Tsurunari, Tomoya Komatsu, Hiroyuki Nakamura
  • Elastic wave device
    Patent number: 9166556
    Abstract: An elastic wave device includes a resonator and an inductor. One end of the inductor is connected to the resonator, and the other end of the inductor is connected to a ground electrode or a signal electrode. The elastic wave device includes a chip and a mounting substrate. The chip includes a piezoelectric substrate and an interdigital transducer electrode provided on the piezoelectric substrate so define the resonator. The chip is mounted on the mounting substrate. The inductor is provided to the mounting substrate. A dummy electrode to which the one end side of the inductor is connected and the ground electrode or the signal electrode are provided on a surface of the mounting substrate that is opposite to the chip.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: October 20, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Motoji Tsuda
  • Acoustic wave device
    Patent number: 9160300
    Abstract: An acoustic wave device includes: an electrode that is located on a substrate and excites an acoustic wave; and an oxide silicon film that is doped with an element and provided so as to cover the electrode, wherein a normalized reflectance obtained by normalizing a local maximum value of a reflectance when a light is caused to enter an upper surface of the oxide silicon film doped with the element by a reflectance when a light having a wavelength at the local maximum value is caused to enter an upper surface of the substrate directly is equal to or larger than 0.96.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: October 13, 2015
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Satoru Matsuda, Takashi Matsuda, Michio Miura
  • Acoustic wave device
    Patent number: 9160301
    Abstract: An acoustic wave device includes: a multilayer structure that has plural surfaces which principal surfaces of plural layers provide; a chip including an acoustic wave filter and mounted on a first surface; a resin unit sealing the chip; a wiring pattern that is formed on a second surface and electrically connected to at least one of resonators; a ground pattern that is formed on the second surface along a part of the wiring pattern, and is away from the wiring pattern; and an external terminal that is formed on a third surface and electrically connected to the wiring pattern and the ground pattern, the third surface being disposed on an opposite side of the first surface with respect to the second surface; wherein a part of the wiring pattern that comes closest to the ground pattern is substantially formed in parallel with the ground pattern.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: October 13, 2015
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Motoyuki Tajima, Tooru Takezaki, Hitoshi Tsukidate
  • Duplexer module
    Patent number: 9160307
    Abstract: At least one duplexer includes first and second balanced terminals. A mount electrode layer includes a first balanced mount electrode, which is connected to the first balanced terminal, and a second balanced mount electrode, which is connected to the second balanced terminal. An internal electrode layer includes at least one internal ground electrode. When viewing a mount board from a side on which the duplexer is mounted, the first and second balanced mount electrodes do not oppose the same internal ground electrode.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: October 13, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Masanori Kato
  • Duplexer and method for increasing the isolation between two filters
    Patent number: 9160306
    Abstract: A duplexer includes an antenna terminal, a transmission amplifier terminal and a reception amplifier terminal. The transmission amplifier terminal is coupled to the antenna terminal via a transmission filter. The reception amplifier terminal is coupled to a reception filter and the reception filter is coupled to the antenna terminal via a band-stop filter.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: October 13, 2015
    Assignee: EPCOS AG
    Inventors: Andreas Link, Bernhard Bader
  • Branching filter and communication module component
    Patent number: 9160304
    Abstract: A branching filter has a group of terminals including an antenna terminal, a transmission signal terminal, reception signal terminals, and a ground terminal; a transmitting filter located between the antenna terminal and the transmission signal terminal; a second filter located between the antenna terminal and the reception signal terminals and; a first connection line connecting the parallel resonators and the ground terminal; a second connection line connecting the receiving filter and the ground terminal; and a third connection line which connects the first connection line and the second connection line and which is electromagnetically coupled with at least one of the resonators and lines configuring the transmitting filter.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: October 13, 2015
    Assignee: KYOCERA Corporation
    Inventor: Yuuji Mori
  • Component working with acoustic waves having reduced temperature coefficient of frequencies and method for producing same
    Patent number: 9160303
    Abstract: A component is designed to work with acoustic waves. Embodiments have an improved temperature gradient of the frequency range and have increased performance strength. To this end, the component includes a stack of layers having a lower bonding layer, an electrode layer, an upper bonding layer, a compensation layer, and a trimming layer.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: October 13, 2015
    Assignee: EPCOS AG
    Inventors: Wolfgang Sauer, Andreas Bergmann, Michael Jakob, Markus Mayer, Karl-Christian Wagner, Ulrich Knauer
  • Filter and duplexer
    Patent number: 9148115
    Abstract: A filter includes: a filter circuit connected between a first terminal and a second terminal; and a matching circuit connected between the filter circuit and the second terminal, wherein an impedance viewed from the second terminal toward the matching circuit is less than an impedance viewed from a node between the filter circuit and the matching circuit toward the filter circuit.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: September 29, 2015
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Naoya Yabuuchi, Toshio Nishizawa, Hikaru Shimomura
  • Ladder filter device and elastic wave resonator
    Patent number: 9148123
    Abstract: A ladder filter device includes elastic wave resonators with IDT electrodes. An apodization angle ? in an IDT electrode of a series arm resonator in the ladder filter device falls within a range from about 2° to about 14° with respect to an elastic wave propagation direction. This arrangement provides a ladder filter device that has a smaller insertion loss in a low frequency side portion of a passing band.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: September 29, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Koichiro Kawasaki, Tetsuro Okuda
  • Acoustic wave device
    Patent number: 9148106
    Abstract: An acoustic wave device includes: an acoustic wave filter chip that is mounted on a multilayered substrate including wiring layers; a first wiring that is electrically coupled to an internal circuit of the acoustic wave filter chip and formed in a first wiring layer of the multilayered substrate; a second wiring that is formed in a second wiring layer separate from the first wiring layer; and a via wiring that penetrates at least a part of the multilayered substrate and connects the first wiring to the second wiring; wherein the first wiring, the second wiring, and the via wiring forms a first inductor of which a direction of magnetic flux intersects with a stacking direction of the multilayered substrate.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: September 29, 2015
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Masafumi Iwaki
  • Filter module and duplexer module
    Patent number: 9136817
    Abstract: A filter module includes: reception filters connected between an antenna terminal and a reception terminal; and a module substrate, wherein a first reception filter that is at least one reception filter of the reception filters is embedded in the module substrate, and a second reception filter that is at least another one reception filter is mounted on a surface of the module substrate so as to overlap the first reception filter.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: September 15, 2015
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Jun Tsutsumi
  • Duplexer
    Patent number: 9136823
    Abstract: A duplexer includes a reception filter that is connected between a reception terminal and an antenna terminal and includes one or a plurality of series resonators that are acoustic wave resonators, and a transmission filter that is connected between a transmission terminal and the antenna terminal and includes one or a plurality of acoustic wave resonators, a resonance frequency of a first series resonator that is one of the one or the plurality of series resonators and is closest to the antenna terminal in the reception filter being higher than an upper limit frequency of a reception band of the reception filter.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: September 15, 2015
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Shogo Inoue, Hiroshi Nakamura
  • SAW filter operating in a balanced/unbalanced manner
    Patent number: 9130538
    Abstract: A SAW filter has two DMS tracks. Each DMS track includes six converters, with two converters each acting as input or output converters. The two DMS tracks are electrically connected in series by way of four pairs of coupling converters and the associated coupling lines. A common inner ground line is provided between the two DMS tracks, which extends over the entire length of the DMS tracks and crosses the coupling lines. The input converters of the first DMS track are connected to an asymmetrical port, while the output converters of the second DMS track are connected to a symmetrical port.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: September 8, 2015
    Assignee: EPCOS AG
    Inventors: Thomas Bauer, Andreas Detlefsen, Stephan Bolze, Ralph Durner
  • Duplexer
    Patent number: 9112478
    Abstract: A duplexer includes: a transmission filter connected between a common terminal and a transmission terminal; and a reception filter connected between the common terminal and a reception terminal, wherein the reception filter includes resonators located on a piezoelectric substrate, at least one resonator of the resonators is grounded, and a resonator located at a side closest to the common terminal out of the grounded resonator is a divided resonator that is divided into two or more, and a resonance frequency fr of the divided resonator is in a range of fr=2×(fTL to fTH)?(fRL to fRH) when a pass frequency of the transmission filter is fTL to fTH and a pass frequency of the reception filter is fRL to fRH.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: August 18, 2015
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Akira Moriya
  • Surface acoustic wave filter and duplexer component
    Patent number: 9106206
    Abstract: A surface acoustic wave filter includes an arrangement of transducers having at least one first transducer one second transducer and one third transducer. The at least one first transducer is connected to the input terminal and a terminal for applying a reference potential. The second transducer is connected to the first output terminal and the terminal for applying the reference potential. The third transducer is connected to the second output terminal and the terminal for applying the reference potential. A capacitor is connected to at least one of a first and second output terminal in such a way that the capacitor is connected between the first and second output terminals or between one of the first and second output terminals and the terminal for applying the reference potential.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: August 11, 2015
    Assignee: EPCOS AG
    Inventors: Tobias Krems, Ravi Challa
  • Filter arrangement and method for producing a filter arrangement
    Patent number: 9099987
    Abstract: The invention relates to a filter arrangement (10) comprising a substrate (16) having a first series resonator (11) and a first and a second parallel resonator (12, 13). The filter arrangement (10) further comprises a carrier (18), on which the substrate (16) is arranged and which comprises a first inductor (17), the first connection of which is coupled to a first connection of the first series resonator (11) by means of the first parallel resonator (12) and to a second connection of the first series resonator (11) by means of the second parallel resonator (13).
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: August 4, 2015
    Assignee: EPCOS AG
    Inventors: Gerhard Maurer, Edgar Schmidhammer
  • Bulk acoustic wave resonator comprising a boron nitride piezoelectric layer
    Patent number: 9088265
    Abstract: A bulk acoustic wave (BAW) resonator structure comprises: a first electrode disposed over a substrate; a piezoelectric layer disposed over the first electrode, the piezoelectric layer comprising boron nitride (BN); and a second electrode disposed over the first piezoelectric layer.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: July 21, 2015
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Paul Bradley, John D. Larson, III, Kevin J. Grannen
  • Substrate, duplexer and substrate module
    Patent number: 9083313
    Abstract: In a substrate that improves isolation characteristics of a high-frequency-side signal path and a low-frequency-side signal path, a duplexer, and a substrate module, a package substrate includes two SAW filters mounted thereon and defines a portion of the duplexer. A substrate body includes main surfaces that oppose each other. Land electrodes are provided on one of the main surfaces and are used to connect either of the two SAW filters. Land electrodes are provided on one of the main surfaces and are used to connect a mounting substrate on which the duplexer is mounted and are respectively superposed with the land electrodes when viewed in plan from a z-axis direction. The land electrodes and the land electrodes, which are superposed with each other when viewed in plan from the z-axis direction, are electrically connected to each other.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: July 14, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tadaji Takemura, Syuji Yamato, Takanori Uejima, Morio Takeuchi
  • High-frequency module
    Patent number: 9077439
    Abstract: A small high-frequency module has a structure such that a high-power signal is prevented from leaking to a switch device. On the top surface of a multilayer body, a switch device and a duplexer are mounted so as to be spaced apart from each other by a predetermined distance. An inductor and resistors connected to a circuit different from a transmission system circuit are mounted between the switch device and the duplexer. The inductor and the resistors are mounted such that external connection terminals connected to the switch device are on the switch device side and external connection terminals connected to external connection power system port electrodes of the high-frequency module are on the duplexer side.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: July 7, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Takanori Uejima
  • Touch input device
    Patent number: 9076609
    Abstract: A touch input device includes: a film that extends from a bulging portion bulging upward to a flat surface; a first detection region that is formed in the bulging portion and detects coordinates in a first direction and a second direction intersecting with the first direction in response to a touch to a surface of the film by an object; and a second detection region that detects a touch without detecting the coordinates in response to a touch to the surface by the object in a region other than the first detection region.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: July 7, 2015
    Assignee: FUJITSU COMPONENT LIMITED
    Inventor: Takashi Nakajima
  • Surface acoustic wave filter and duplexer using same
    Patent number: 9041487
    Abstract: An SAW filter and a duplexer excellent in electrical characteristics will be provided. An SAW filter has a piezoelectric substrate 40, a surface acoustic wave element 10 having a first IDT electrode 1 on the piezoelectric substrate 40, a first signal line 31 electrically connected to the first IDT electrode 1, and a ring-shaped reference potential line 9 which has a first intersecting portion intersecting with the first signal line 31 through an insulation member 41 and surrounds the surface acoustic wave element 10.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: May 26, 2015
    Assignee: KYOCERA Corporation
    Inventor: Hiroyuki Tanaka
  • Method, system, and apparatus for resonator circuits and modulating resonators
    Patent number: 9041484
    Abstract: Embodiments of resonator circuits and modulating resonators and are described generally herein. One or more acoustic wave resonators may be coupled in series or parallel to generate tunable filters. One or more acoustic wave resonances may be modulated by one or more capacitors or tunable capacitors. One or more acoustic wave modules may also be switchable in a filter. Other embodiments may be described and claimed.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: May 26, 2015
    Assignee: Peregrine Semiconductor Corporation
    Inventors: Mark L. Burgener, James S. Cable
  • Ladder type surface acoustic wave filter and duplexer using same
    Patent number: 9041486
    Abstract: An object of the present invention is to improve the passing characteristic at high temperature in a ladder-type elastic wave filter and a duplexer including the filter. The ladder-type elastic wave filter of the present invention includes a piezoelectric substrate, a first series elastic-wave resonator formed on the piezoelectric substrate and connected in series between the input and output terminals of the filter, a parallel elastic-wave resonator formed on the piezoelectric substrate and connected in parallel between the series elastic-wave resonator and the ground terminal, and a dielectric film formed on the piezoelectric substrate so as to cover the first series elastic-wave resonator. The piezoelectric substrate is formed of a material with a negative temperature coefficient.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: May 26, 2015
    Assignee: SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO., LTD
    Inventors: Tetsuya Tsurunari, Rei Goto, Hiroyuki Nakamura
  • FILTER DEVICE
    Publication number: 20150137909
    Abstract: A filter device includes a first signal terminal, a second signal terminal, a filter unit, a first inductor and a second inductor. The filter unit is connected between the first signal terminal and the second signal terminal. The first inductor is connected between a connection point between the filter unit and the first signal terminal, and a ground potential. The second inductor is connected between the filter unit and the second signal terminal. The second inductor is electromagnetically coupled with the first inductor.
    Type: Application
    Filed: January 27, 2015
    Publication date: May 21, 2015
    Inventors: Tetsuro OKUDA, Koichiro KAWASAKI
  • ACOUSTIC WAVE FILTER AND DUPLEXER
    Publication number: 20150137908
    Abstract: An acoustic wave filter includes series resonators and parallel resonators that have a piezoelectric film on an identical substrate and have a lower electrode and an upper electrode, wherein: one of the series resonators and the parallel resonators have a temperature compensation film on a face of the lower electrode or the upper electrode that is opposite to the piezoelectric film in a resonance region, the compensation film having an elastic constant of a temperature coefficient of which sign is opposite to a sign of a temperature coefficient of an elastic constant of the piezoelectric film; and the other have an added film on the same side as the temperature compensation film on the lower electrode side or the upper electrode side compared to the piezoelectric film in the resonance region in the one of the series resonators and the parallel resonators.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 21, 2015
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Tokihiro NISHIHARA, Shinji TANIGUCHI
  • Ladder filter, duplexer and module
    Patent number: 9035722
    Abstract: A ladder filter includes at least one series resonator connected in series between an input terminal and an output terminal, at least one parallel resonator connected in parallel with the at least one series resonator, an additional resonator connected in series between the at least one series resonator and one of the input terminal and the output terminal, and an inductor connected in series to the additional resonator, the additional resonator having a resonance frequency higher than an anti-resonance frequency of the at least one series resonator.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: May 19, 2015
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Motoaki Hara, Shogo Inoue, Jun Tsutsumi, Masafumi Iwaki
  • Duplexer, communication module component, and communication device
    Patent number: 9035721
    Abstract: A duplexer has an antenna terminal, a first terminal, and second terminals and provided with a first filter arranged between the antenna terminal and first terminal and including a parallel resonator for forming a ladder type filter circuit, a second filter arranged between the antenna terminal and the second terminal and having a passband higher than a passband of the first filter, and an electromagnetic coupling element arranged between the parallel resonator of the first filter and a ground part and electromagnetically coupled with the antenna terminal.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: May 19, 2015
    Assignee: KYOCERA Corporation
    Inventors: Takeshi Takenoshita, Yuuko Yokota, Yuuji Mori
  • PIEZOELECTRIC THIN-FILM RESONATOR, FILTER AND DUPLEXER
    Publication number: 20150130560
    Abstract: A piezoelectric thin-film resonator includes, a substrate, a piezoelectric film provided on the substrate, and a lower electrode and an upper electrode that face each other through the piezoelectric film. The piezoelectric film has an air space that is provided in at least part of an outer circumferential part of a resonance region in which the upper and lower electrodes face each other through the piezoelectric film and is not provided in a central part of the resonance region.
    Type: Application
    Filed: October 29, 2014
    Publication date: May 14, 2015
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Tsuyoshi YOKOYAMA, Tokihiro NISHIHARA, Takeshi SAKASHITA
  • PIEZOELECTRIC THIN FILM RESONATOR, FILTER AND DUPLEXER
    Publication number: 20150130559
    Abstract: A piezoelectric thin film resonator includes: a piezoelectric film provided on a substrate; a lower electrode and an upper electrode sandwiching at least a part of the piezoelectric film and facing with each other; and an inserted film that is inserted in the piezoelectric film, is provided in an outer circumference region of a resonance region and is not provided in a center region of the resonance region, wherein: an angle between an edge face of the lower electrode and a lower face of the lower electrode in the resonance region is an acute angle; and a width of the inserted film in the resonance region on a side for extracting the upper electrode from the resonance region is larger than another width of the inserted film in the resonance region on a side for extracting the lower electrode from the resonance region.
    Type: Application
    Filed: October 21, 2014
    Publication date: May 14, 2015
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Tsuyoshi YOKOYAMA, Tokihiro NISHIHARA, Takeshi SAKASHITA
  • PIEZOELECTRIC THIN FILM RESONATOR, FILTER AND DUPLEXER
    Publication number: 20150130561
    Abstract: A piezoelectric thin film resonator includes: a substrate; a piezoelectric film provided on the substrate; a lower electrode and an upper electrode that sandwich at least a part of the piezoelectric film and face with each other; and an inserted film that is inserted in the piezoelectric film, is provided on an outer circumference region in a resonance region in which the lower electrode and the upper electrode sandwich the piezoelectric film and face with each other, is not provided in a center region of the resonance region, and has a cutout in the resonance region.
    Type: Application
    Filed: October 29, 2014
    Publication date: May 14, 2015
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Shinji TANIGUCHI, Tokihiro NISHIHARA, Tsuyoshi YOKOYAMA, Takeshi SAKASHITA
  • ELECTRONIC DEVICE AND MODULE
    Publication number: 20150123744
    Abstract: An electronic device includes: a first substrate, a first function part in its first surface, an adhesive layer on the first surface so as to surround the first function part, a second substrate bonded to the first substrate by the adhesive layer to form a gap between the first and second substrates, a first via interconnection piercing the first substrate to connect the first surface and an opposite second surface, a second via interconnection piercing the second substrate to connect a third surface of the second substrate opposite to the first substrate and a fourth surface opposite to the third surface, a first terminal provided on the second surface and connected to the first via interconnection, a second terminal provided on the fourth surface and connected to the second via interconnection. The first function part is connected to at least one of the first and second via interconnections.
    Type: Application
    Filed: October 27, 2014
    Publication date: May 7, 2015
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Gohki NISHIMURA, Takuma KUROYANAGI, Naoyuki TASAKA, Sachiko TANAKA
  • Elastic wave filter
    Patent number: 9019046
    Abstract: An elastic wave filter includes electrode fingers, a first busbar and a second busbar, and inclined electrode portions each having a narrower distance between the electrode fingers from the first busbar toward the second busbar. The elastic wave filter includes a dummy electrode disposed in at least one of the input-side IDT electrode portion and the output-side IDT electrode portion to suppress reflection of a diffracted elastic wave by the busbar and to suppress spurious response at an end portion in a frequency pass-band. The dummy electrode has a width dimension and a pitch that are determined such that none of a period shorter than a shortest period of the electrode fingers and a period longer than a longest period of the electrode fingers is satisfied.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: April 28, 2015
    Assignee: Nihon Dempa Kogyo Co., Ltd.
    Inventors: Tadaaki Tsuda, Takashi Ohtani
  • Elastic wave branching filter
    Patent number: 9019040
    Abstract: An elastic wave surface acoustic wave duplexer includes an antenna terminal, a transmission filter, a reception filter, and a plurality of elastic wave resonators connected in series between the antenna terminal and the reception filter. The reception filter is a longitudinally coupled resonator-type surface acoustic wave filter including a plurality of IDT electrodes and arranged along a propagation direction of elastic wave. A combined capacitance of the plurality of surface acoustic wave resonators is smaller than a capacitance of the IDT electrodes and included in the plurality of IDT electrodes and connected to the antenna terminal.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: April 28, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Yuichi Takamine
  • Electrical component
    Patent number: 9019038
    Abstract: An electrical component, e.g., a diplexer or a duplexer, can have one of a number of diverse arrangements for terminal surfaces on the substrate bottom. For example, the terminal surfaces for first and second filters are not disposed at the maximum distance from one another. First and second filters can be disposed as one or two discrete components on the substrate, wherein one filter can be implemented as being integrated in a multilayer substrate.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: April 28, 2015
    Assignee: Epcos AG
    Inventors: Maximilian Pitschi, Juergen Kiwitt, Andreas Fleckenstein
  • ELASTIC WAVE DEVICE
    Publication number: 20150109071
    Abstract: An elastic wave device includes a first elastic wave element, a second elastic wave element, and a first substrate. The first elastic wave element includes a first piezoelectric substrate. The second elastic wave element includes a second piezoelectric substrate. The second piezoelectric substrate is stacked on the first piezoelectric substrate. A coefficient of linear expansion of the second piezoelectric substrate is greater than a coefficient of linear expansion of the first piezoelectric substrate. The first substrate is bonded to the second piezoelectric substrate. A coefficient of linear expansion of the first substrate is lower than the coefficient of linear expansion of the second piezoelectric substrate.
    Type: Application
    Filed: January 5, 2015
    Publication date: April 23, 2015
    Inventors: Taku KIKUCHI, Hisashi YAMAZAKI
  • Elastic wave demultiplexer
    Patent number: 9013247
    Abstract: In an elastic wave demultiplexer having excellent isolation characteristics, a first ground wiring electrode is connected to a second ground wiring electrode, via first ground via-hole electrodes. The first ground wiring electrode is connected to ground land electrodes via second ground via-hole electrodes. The second ground wiring electrode is connected to a ground terminal via third ground via-hole electrodes. The number of the first ground via-hole electrodes is greater than the number of the second ground via-hole electrodes and the number of the third ground via-hole electrodes.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: April 21, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Yuichi Takamine
  • Antenna duplexer
    Patent number: 8994472
    Abstract: An antenna duplexer includes first and second filters connected to an antenna terminal. The first filter has a passband of a low frequency band. The second filter has a passband of a high frequency band. The second filter is a ladder-type filter including series-arm resonators and parallel-arm resonators. At least one parallel-arm resonator out of the parallel-arm resonators has a main resonance and an auxiliary resonance. Attenuation poles caused by the main resonance and the auxiliary resonance are within the low frequency band. This antenna duplexer has a high attenuation characteristic and a high isolation characteristic while maintaining a low insertion loss.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: March 31, 2015
    Assignee: Panasonic Corporation
    Inventors: Toru Yamaji, Kazunori Nishimura, Joji Fujiwara, Hiroyuki Nakamura
  • DUPLEXER
    Publication number: 20150084716
    Abstract: A duplexer includes a reception filter that is connected between a reception terminal and an antenna terminal and includes one or a plurality of series resonators that are acoustic wave resonators, and a transmission filter that is connected between a transmission terminal and the antenna terminal and includes one or a plurality of acoustic wave resonators, a resonance frequency of a first series resonator that is one of the one or the plurality of series resonators and is closest to the antenna terminal in the reception filter being higher than an upper limit frequency of a reception band of the reception filter.
    Type: Application
    Filed: December 9, 2014
    Publication date: March 26, 2015
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Shogo INOUE, Hiroshi NAKAMURA
  • Filter and duplexer
    Patent number: 8988162
    Abstract: A filter includes: a coupled multi-mode acoustic wave filter connected between an input terminal and an output terminal; a first inductor connected between the coupled multi-mode acoustic wave filter and a ground terminal; an acoustic wave resonator, one end of which is connected between the input terminal or the output terminal and the coupled multi-mode acoustic wave filter; and a second inductor connected between another end of the acoustic wave resonator and the ground terminal.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: March 24, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventor: Jun Tsutsumi
  • Elastic wave filter device and communication apparatus equipped with the same
    Patent number: 8988170
    Abstract: An elastic wave filter device has a center frequency of a reception frequency band. A plurality of parallel arms are connected to a portion of a series arm on a second signal terminal side of a portion in which a first series-arm resonator is provided. Series-arm resonators among the plurality of series-arm resonators other than the first series-arm resonator include a series-arm resonator having a resonant frequency higher than the resonant frequency of the first series-arm resonator. The resonant frequency of the first series-arm resonator is equal to the reception frequency band.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: March 24, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Sunao Yamazaki, Katsuhito Kuroda
  • ELECTRONIC CIRCUIT
    Publication number: 20150077194
    Abstract: An electronic circuit includes: a switch that includes ports, and selects a port to be connected to an antenna from among the ports; a first filter connected between a first port and a first terminal, and having a pass band which overlaps with a transmission band of a first band; a second filter connected between a second port and a second terminal, and having a pass band which overlaps with a transmission band of a second band; a third filter connected between a third port and a third terminal, and having a pass band which overlaps with reception bands of the first and the second bands; wherein when a signal in the first band is transmitted and received, the switch selects the first and the third ports, and when a signal in the second band is transmitted and received, the switch selects the second and the third ports.
    Type: Application
    Filed: August 19, 2014
    Publication date: March 19, 2015
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Hitoshi EBIHARA, Hiroshi HARA
  • Antenna duplexer with high GPS suppression
    Patent number: 8981872
    Abstract: An antenna duplexer includes a transmission filter which operates in a transmission frequency band and has a transmission filter output. A reception filter operates in a reception frequency band and has a reception filter output. An antenna connection is connected to the transmission filter output and a matching element is connected between the antenna connection and the reception filter input. The circuit formed from the transmission filter, reception filter and matching element attenuates transmission signals in a frequency band whose frequencies f are in the interval 0.50*f0<=f<=0.75*f0, where f0 is the mid-frequency of the reception frequency band.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: March 17, 2015
    Assignee: EPCOS AG
    Inventors: Helmut Klamm, Peter Selmeier
  • Surface acoustic wave device and method of fabricating the same
    Patent number: RE45419
    Abstract: A surface acoustic wave device includes a piezoelectric substrate having a first surface on which comb-like electrodes, first pads connected thereto, and a first film are provided. The first film is located so as to surround the comb-like electrodes. A base substrate has a second surface on which second pads joined to the first pads and a second film joined to the first film are provided. The first and second films joined by a surface activation process define a cavity in which the comb-like electrodes and the first and second pads are hermetically sealed.
    Type: Grant
    Filed: November 22, 2008
    Date of Patent: March 17, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Osamu Kawachi, Osamu Ikata, Masanori Ueda, Suguru Warashina