Patents by Inventor Masanori Ueda

Masanori Ueda 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).

  • Acoustic wave device, duplexer, communication module, and communication apparatus
    Patent number: 8026776
    Abstract: An acoustic wave device includes a ladder-type filter in which resonators are connected in a ladder configuration. In the acoustic wave device, series-connected resonators are connected in a parallel line in the ladder-type filter, and the resonators connected in the parallel line have mutually different resonance frequencies.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: September 27, 2011
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Masanori Ueda, Motoaki Hara, Shogo Inoue, Kenya Hashimoto, Yasutomo Tanaka, Masatsune Yamaguchi, Tatsuya Omori
  • FILTER, DUPLEXER AND ELECTRONIC DEVICE
    Publication number: 20110227807
    Abstract: A ladder type filter includes series resonators S1˜S4 connected in series between an input terminal In and an output terminal Out, parallel resonators P1˜P3 connected in parallel between the input terminal In and the output terminal Out, a resonator RP connected in series with the series resonators S1˜S4 between the input terminal and the output terminal, the resonator RP having a resonance frequency lower than resonance frequencies of the series resonators S1˜S4, and an inductor Lp connected in parallel with the resonator. According to the present ladder filter, signals having frequencies away from the pass band can be suppressed by an attenuation pole formed by the inductor. It is further possible to suppress the insertion loss in the pass band by the resonator.
    Type: Application
    Filed: November 28, 2008
    Publication date: September 22, 2011
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Masafumi Iwaki, Tokihiro Nishihara, Masanori Ueda
  • Acoustic wave device, filter and duplexer
    Patent number: 8018298
    Abstract: An acoustic wave device includes a first resonator having a piezoelectric substance sandwiched between a pair of electrodes in a direction of an c-axis orientation or a polarization axis, and a second resonator that is connected in series and has another piezoelectric substance sandwiched another pair of electrodes so that one of the another pair of electrodes located in the direction of the c-axis orientation or the polarization axis is at a potential equal to that of one of the pair of electrodes of the first resonator in the direction of the c-axis orientation or the polarization axis.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: September 13, 2011
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Masanori Ueda, Masafumi Iwaki, Tokihiro Nishihara, Shinji Taniguchi, Go Endo, Yasuo Ebata
  • Ceramic heater and method for manufacturing the same
    Patent number: 7982166
    Abstract: A ceramic heater is provided that has a heat generating resistor and a lead member which supplies electric power to the heat generating resistor buried in a ceramic body, and exhibits excellent durability by controlling the cross sectional shape and plan configuration of the heat generating resistor.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: July 19, 2011
    Assignee: Kyocera Corporation
    Inventors: Hiroshi Kukino, Hideaki Yoshidome, Satoshi Tanaka, Makoto Mido, Masanori Ueda
  • Film bulk acoustic resonator, filter, communication module and communication device
    Patent number: 7978025
    Abstract: There is provided a film bulk acoustic resonator which has a substrate, a lower electrode formed on the substrate, a piezoelectric membrane formed on the lower electrode, an upper electrode formed on the piezoelectric membrane, and an insulating film disposed adjacent to the piezoelectric membrane between the upper electrode and the substrate and at a position at which the upper electrode and the substrate are opposed each other. The substrate is preferably formed so as to form a void at a portion facing to the lower electrode. The lower electrode has preferably a tapered end and a part of the boundary between the piezoelectric membrane and the insulating film is disposed on an inside from the upper end of the tapered end.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: July 12, 2011
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Tsuyoshi Yokoyama, Masanori Ueda
  • Piezoelectric thin-film resonator
    Patent number: 7952257
    Abstract: There is provided a piezoelectric thin-film resonator including a substrate, a lower electrode disposed on the substrate, a piezoelectric film disposed on the lower electrode, an upper electrode disposed on the piezoelectric film in such a manner that a portion of the upper electrode is opposed to the lower electrode, and a mass element disposed on the upper electrode in a portion of an edge of the region of the upper electrode in which the upper electrode and the lower electrode are opposed to each other.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: May 31, 2011
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Masafumi Iwaki, Tokihiro Nishihara, Masanori Ueda
  • Duplexer
    Patent number: 7941103
    Abstract: A duplexer includes a transmit filter of a ladder type filter, connected between a common terminal and a transmitting terminal, and a receive filter of the ladder type filter, connected between the common terminal and a receiving terminal. One or more parallel resonators in the transmit filter are grounded through a transmitting inductance, and a portion of multiple parallel resonators are grounded through a first receiving inductance and a remaining portion of the multiple parallel resonators are grounded through a second receiving inductance.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: May 10, 2011
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yasuhide Iwamoto, Jun Tsutsumi, Masafumi Iwaki, Masanori Ueda
  • Piezoelectric thin-film resonator and filter using the same
    Patent number: 7884527
    Abstract: A piezoelectric thin-film resonator includes: a substrate; a lower electrode that is formed on the substrate; a piezoelectric film that is formed on the lower electrode and the substrate; and an upper electrode that is formed on the piezoelectric film, with the piezoelectric film being partially interposed between the lower electrode and the upper electrode facing each other. In this piezoelectric thin-film resonator, at least a part of the outer periphery of the piezoelectric film interposed between the lower electrode and the upper electrode overlaps the outer periphery of the region formed by the upper electrode and the lower electrode facing each other.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: February 8, 2011
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Jun Tsutsumi, Tsuyoshi Yokoyama, Takeshi Sakashita, Shinji Taniguchi, Masafumi Iwaki, Tokihiro Nishihara, Masanori Ueda
  • Antenna duplexer
    Patent number: 7872548
    Abstract: An antenna duplexer is provided, which can be built with a smaller size and lower height than ever without compromising out-of-band attenuation characteristic and isolation characteristic between a transmit terminal and a receive terminal. The antenna duplexer includes a transmit filter provided between an antenna terminal and the transmit terminal, and a receive filter provided between the antenna terminal and the receive terminal. The filters are enclosed by a package, in which a ground pattern for the receive filter is separated from other ground patterns.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: January 18, 2011
    Assignee: Taiyo Yuden Co., Ltd
    Inventors: Tokihiro Nishihara, Masafumi Iwaki, Shinji Taniguchi, Masanori Ueda, Go Endo, Koichi Hatano
  • FILM BULK ACOUSTIC RESONATOR, FILTER, COMMUNICATION MODULE AND COMMUNICATION APPARATUS
    Publication number: 20110006860
    Abstract: A piezoelectric thin film resonator of the present has a substrate 1, an intermediate layer 7 disposed on the substrate 1 and is formed of an insulator, a lower electrode 3 disposed on the intermediate layer 7, a piezoelectric film 4 disposed on the lower electrode 3, and an upper electrode 5 disposed on a position facing the lower electrode 3 with the piezoelectric film 4 interposed therebetween, in which, in a resonant region 8 where the lower electrode 3 and the upper electrode 5 face each other, a space 6 is formed in the substrate 1 and the intermediate layer 7 or between the lower electrode 3 and the intermediate layer 7 and the region of the space 6 is included in the resonant region 8. With the structure, the dissipation of the vibrational energy to the substrate from the resonance portion can be suppressed, thereby improving the quality factor.
    Type: Application
    Filed: March 4, 2008
    Publication date: January 13, 2011
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Motoaki Hara, Tokihiro Nishihara, Shinji Taniguchi, Takeshi Sakashita, Tsuyoshi Yokoyama, Masafumi Iwaki, Masanori Ueda
  • Elastic boundary wave device
    Patent number: 7830067
    Abstract: An elastic boundary wave device includes a first medium with piezoelectricity, an electrode exciting an elastic wave and provided on the first medium, a second medium made of a different material from the first medium and provided on the first medium to cover the electrode, and a sound absorbing portion provided on the second medium.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: November 9, 2010
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Satoru Matsuda, Michio Miura, Takashi Matsuda, Masanori Ueda
  • Film bulk acoustic resonator and filter
    Patent number: 7816998
    Abstract: A film bulk acoustic resonator includes a lower electrode that is formed on a void of a substrate or is formed so that a void is formed between the lower electrode and the substrate, a piezoelectric film that is formed on the lower electrode, an upper electrode that is formed on the piezoelectric film so as to have a resonance region facing the lower electrode through the piezoelectric film, a support region that is provided around the resonance region, has a width of 0.35 times to 0.65 times a wavelength of a wave propagating in a lateral direction, and transmits the wave passes, and an adjacent region that is provided around the support region and blocks the wave.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: October 19, 2010
    Assignees: Fujitsu Media Devices Limited, Taiyo Yuden Co., Ltd.
    Inventors: Motoaki Hara, Tokihiro Nishihara, Masanori Ueda, Go Endo
  • PIEZOELECTRIC THIN FILM RESONATOR, FILTER, COMMUNICATION MODULE AND COMMUNICATION DEVICE
    Publication number: 20100237750
    Abstract: A piezoelectric thin film resonator includes a substrate, a lower electrode provided on the substrate, a piezoelectric film provided on the lower electrode, and an upper electrode provided on the piezoelectric film. At least a portion of the upper electrode and that of the lower electrode oppose each other through the piezoelectric film, and at least a portion of the periphery of the upper electrode is reversely tapered.
    Type: Application
    Filed: November 30, 2009
    Publication date: September 23, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Takeshi SAKASHITA, Motoaki Hara, Masafumi Iwaki, Tsuyoshi Yokoyama, Shinji Taniguchi, Tokihiro Nishihara, Masanori Ueda
  • Filter and duplexer
    Patent number: 7786649
    Abstract: A filter includes piezoelectric thin-film resonators having a substrate, a lower electrode supported by the substrate, a piezoelectric film provided on the lower electrode, and an upper electrode provided on the piezoelectric film. At least one of the piezoelectric thin-film resonators has a portion in which the upper electrode overlaps the lower electrode across the piezoelectric film. The above portion has a shape different from shapes of corresponding portions of other piezoelectric thin-film resonators, so that a spurious component in the above at least one of the piezoelectric thin-film resonators occur at a frequency different from frequencies of spurious components that occur in the other piezoelectric thin-film resonators.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: August 31, 2010
    Assignees: Fujitsu Media Devices Limited, Taiyo Yuden Co., Ltd.
    Inventors: Tokihiro Nishihara, Shinji Taniguchi, Masafumi Iwaki, Tsuyoshi Yokoyama, Takeshi Sakashita, Masanori Ueda, Yasuyuki Saitou
  • HIGH FREQUENCY DEVICE, FILTER, DUPLEXER, COMMUNICATION MODULE, AND COMMUNICATION APPARATUS
    Publication number: 20100194494
    Abstract: In a high frequency device, resonators (IDT capacitors) that function as capacitors are included in a lumped constant balun included in a filter or duplexer, and furthermore, the resonance frequency of the IDT capacitors is set higher than the passband frequency of the filter. This improves the capacitor Q value, thus enabling the realization of a low-loss balance filter.
    Type: Application
    Filed: September 30, 2009
    Publication date: August 5, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Shogo INOUE, Jun Tsutsumi, Motoaki Hara, Masufumi Iwaki, Takashi Matsuda, Masanori Ueda
  • FILTER, DUPLEXER AND COMMUNICATION MODULE
    Publication number: 20100188166
    Abstract: According to an aspect of the invention, each of a filter, a duplexer and a communication module includes a plurality of series resonators connected to a signal line in series and a plurality of parallel resonators connected to the signal line in parallel. At least two of the plurality of parallel resonators are connected to the signal line between two of the plurality of series resonators in parallel, inductors are respectively connected to the at least two parallel resonators, and the inductors have different inductances from each other.
    Type: Application
    Filed: October 20, 2009
    Publication date: July 29, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Motoaki Hara, Shogo Inoue, Masafumi Iwaki, Jun Tsutsumi, Masanori Ueda
  • Duplexer
    Patent number: 7755453
    Abstract: A duplexer includes an antenna terminal, a first filter connected to the antenna terminal, a second filter that has a passband at a high-frequency side of the first filter and is connected to the antenna terminal, and a resonance circuit that is connected between the second filter and the antenna terminal and includes a first inductor and a first capacitor connected in parallel. Assuming that a passband frequency of the first filter ranges from f1Low to f1High (f1Low˜f1High) and a passband frequency ranges from f2Low to f2High (f2Low˜f2High), the resonator has a resonance frequency fr satisfying: fr=(f2Low˜f2High)±(f1Low˜f1High), or fr=2(f1Low˜f1High)±(f2Low˜f2High).
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: July 13, 2010
    Assignees: Fujitsu Media Devices Limited, Taiyo Yuden Co., Ltd.
    Inventors: Masafumi Iwaki, Tokihiro Nishihara, Masanori Ueda, Go Endo
  • Filter and antenna duplexer
    Patent number: 7741930
    Abstract: There is provided a filter including a first resonator, a second resonator in which an excitation efficiency is reduced more than the first resonator, and an inductor connected in parallel with the second resonator.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: June 22, 2010
    Assignees: Fujitsu Media Devices Limited, Fujitsu Limited
    Inventors: Shogo Inoue, Tokihiro Nishihara, Takashi Matsuda, Masanori Ueda
  • Acoustic wave device, resonator and filter
    Patent number: 7741931
    Abstract: A filter includes a parallel resonator having first comb electrodes provided on a piezoelectric substrate and a first dielectric film that covers the first comb electrodes, and a series resonator having second comb electrodes provided on the piezoelectric substrate and a second dielectric film covers the second comb electrodes and is made of a material identical to that of the first dielectric film. The first dielectric film has a different thickness from that of the second dielectric film.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: June 22, 2010
    Assignees: Fujitsu Media Devices Limited, Fujitsu Limited
    Inventors: Satoru Matsuda, Michio Miura, Shogo Inoue, Takashi Matsuda, Masanori Ueda, Seiichi Mitobe
  • FILTER, DEMULTIPLEXER, AND MODULE INCLUDING DEMULTIPLEXER, COMMUNICATION APPARATUS
    Publication number: 20100150075
    Abstract: A demultiplexer has a common terminal, a transmission terminal, and a reception terminal, and furthermore includes a transmission filter connected between the common terminal and the transmission terminal, a reception filter connected between the common terminal and the reception terminal, and a phase shift circuit connected in series to the reception filter connected between the common terminal and the reception terminal. A node on the line from the phase shift circuit to the common terminal or the transmission terminal, and a node on the line from the phase shift circuit to the reception terminal are coupled via a reactance. Accordingly, it is possible to fundamentally reduce or eliminate the situation in which transmission signals from the transmission filter arrive at the reception circuit, and improve isolation.
    Type: Application
    Filed: February 19, 2010
    Publication date: June 17, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Shogo Inoue, Jun Tsutsumi, Takashi Matsuda, Masanori Ueda