Patents by Inventor Masayuki Miyaji

Masayuki Miyaji 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).

  • Publication number: 20210114145
    Abstract: The present invention relates to solder particles, each of which partially has a flat portion in the surface. By using these solder particles, electrodes facing each other are able to be appropriately connected, thereby achieving an anisotropic conductive material that exhibits excellent conduction reliability and excellent insulation reliability.
    Type: Application
    Filed: June 26, 2019
    Publication date: April 22, 2021
    Applicant: Showa Denko Materials Co., Ltd.
    Inventors: Kunihiko AKAI, Yoshinori EJIRI, Yuuhei OKADA, Toshimitsu MORIYA, Shinichirou SUKATA, Masayuki MIYAJI
  • Publication number: 20210114147
    Abstract: A method for producing an anisotropic conductive film, which includes: a preparation step wherein a base material that has a plurality of recesses and solder fine particles are prepared; an accommodation step wherein at least some of the solder fine particles are accommodated in the recesses; a fusing step wherein the solder fine particles accommodated in the recesses are fused, thereby forming solder particles within the recesses; a transfer step wherein an insulating resin material is brought into contact with the recess opening side of the base material that includes the solder particles in the recesses, thereby obtaining a first resin layer on which the solder particles have been transferred; and a layering step wherein a second resin layer that is configured from an insulating resin material is formed on the surface of the first resin layer, on which the solder particles have been transferred, thereby obtaining an anisotropic conductive film.
    Type: Application
    Filed: June 26, 2019
    Publication date: April 22, 2021
    Applicant: Showa Denko Materials Co., Ltd.
    Inventors: Kunihiko AKAI, Yoshinori EJIRI, Yuuhei OKADA, Toshimitsu MORIYA, Shinichirou SUKATA, Masayuki MIYAJI
  • Publication number: 20060076673
    Abstract: A semiconductor device has a plurality of external connection lead terminals including an input lead terminal, an output lead terminal, and an RF grounding lead terminal, a heat dissipation plate connected to the RF grounding lead terminal, a semiconductor device and a printed circuit board each mounted on the heat dissipation plate, and a mold resin for sealing the semiconductor device, the printed circuit board, and the heat dissipation plate such that at least a part of the back surface of the heat dissipation plate is exposed. The semiconductor device amplifies a signal inputted to the input lead terminal and outputs the amplified signal from the output lead terminal.
    Type: Application
    Filed: September 15, 2005
    Publication date: April 13, 2006
    Inventors: Masayuki Miyaji, Sadao Nagata, Hirotada Taniuchi, Yorito Ota, Takahiro Iwakiri, Tomotaka Sakatani
  • Patent number: 6940346
    Abstract: The conventional feedforward amplifier is unable to suppress distortion components efficiently. The present invention provides a feedforward amplifier wherein the vector adjustor is adjusted so that (1) suppression is performed on only the distortion component generated within a predetermined frequency range out of the range of frequencies to be suppressed in which distortion components to be suppressed occur or (2) the suppression of the distortion component generated within the predetermined frequency range is greater than the suppression of the distortion component generated within the frequency range other than the predetermined frequency range out of the range of frequencies to be suppressed, and the pre-distortion circuit is adjusted so that at least the distortion component generated within the frequency range other than the predetermined frequency range is suppressed.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: September 6, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masayuki Miyaji, Kaoru Ishida, Toshimitsu Matsuyoshi, Hisashi Adachi, Seiji Fujiwara
  • Patent number: 6847258
    Abstract: It is difficult that the impedance of the circuit part on the output side of an amplifying element at the frequency of a modulating wave is lower, and consequently, it is difficult to more effectively use the linearity of the amplifying element. The phase of a signal of the frequency of the modulating wave included in an amplified signal output from a FET is inverted by a difference frequency inverting circuit. The inverted signal of the frequency of the modulating wave and a signal of the frequency of a modulated wave included in an amplified signal output from a FET cancel each other out at the drain of the FET. At the drain end of the FET, the signal of the frequency of the modulating wave included in the amplified signal of the FET and a signal of the frequency of the modulating wave output from the FET cancel each other out.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: January 25, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kaoru Ishida, Toshimitsu Matsuyoshi, Masayuki Miyaji
  • Patent number: 6803837
    Abstract: A balun design incorporating the functions of a splitter (combiner) which can be employed in a high power amplifier circuit configuration. The balun is formed of a dielectric multilayer board with conductor patterns on each conductor pattern layer. The balun includes the propagation of a half of an input signal to an in-phase output terminal, and also propagating a fourth of the input signal to first and second opposite-phase output terminals, the signal propagated to the first and second opposite-phase output terminals lagging 180 degrees behind the signal propagated to the in-phase output terminal. The balun provides the output signals at the first and second opposite-phase output terminals 180° out of phase employing through holes in the main line and coupling lines for promoting electromagnetic coupling therebetween.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: October 12, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kaoru Ishida, Masayuki Miyaji, Hiroaki Kosugi, Shin'ichi Kugou
  • Publication number: 20040075497
    Abstract: The conventional feedforward amplifier is unable to suppress distortion components efficiently. The present invention provides a feedforward amplifier wherein the vector adjustor is adjusted so that (1) suppression is performed on only the distortion component generated within a predetermined frequency range out of the range of frequencies to be suppressed in which distortion components to be suppressed occur or (2) the suppression of the distortion component generated within the predetermined frequency range is greater than the suppression of the distortion component generated within the frequency range other than the predetermined frequency range out of the range of frequencies to be suppressed, and the pre-distortion circuit is adjusted so that at least the distortion component generated within the frequency range other than the predetermined frequency range is suppressed.
    Type: Application
    Filed: November 6, 2003
    Publication date: April 22, 2004
    Inventors: Masayuki Miyaji, Kaoru Ishida, Toshimitsu Matsuyoshi, Hisashi Adachi, Seiji Fujiwara
  • Publication number: 20040061568
    Abstract: A high power amplifier has a first balun propagating a half of an input signal to an in-phase output terminal, and also propagating a fourth of the input signal to first and second opposite-phase output terminals, the signal propagated to the first and second opposite-phase output terminals lagging 180 degrees behind the signal propagated to the in-phase output terminal; first and second power amplifier circuits connected to the first and second opposite-phase output terminals of the first balun and having the same characteristics;a third power amplifier circuit connected to the in-phase output terminal of the first balun and having output power substantially twice as much as the output power of the first or second power amplifier circuit; and a second balun having first and second opposite-phase input terminals for receiving the outputs of the first and second power amplifier circuits, having an in-phase input terminal for receiving the output of the third power amplifier circuit, combining the outputs of th
    Type: Application
    Filed: August 22, 2003
    Publication date: April 1, 2004
    Inventors: Kaoru Ishida, Masayuki Miyaji, Hiroaki Kosugi, Shin?apos;ichi Kugou
  • Patent number: 6710652
    Abstract: A feedforward amplifier includes a first power splitter for dividing an input signal into two paths. The first path, in sequence, includes a first vector adjuster, a main amplifier, a second power splitter and a delay circuit. The second path, in sequence, includes a delay circuit, a distortion detecting power combiner, a second vector adjuster and an error amplifier. The distortion detecting power combiner combines a portion of a signal from the first path with a signal in the second path. Each vector adjuster adjusts amplitude and phase of a signal in each path. A distortion suppression power combiner synthesizes a signal in the first path with a signal in the second path. Control is included for stopping operation of the error amplifier or main amplifier based on a predetermined condition.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: March 23, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masayuki Miyaji, Kaoru Ishida, Toshimitsu Matsuyoshi, Seiji Fujiwara
  • Patent number: 6690249
    Abstract: A high power amplifier has a first balun propagating a half of an input signal to an in-phase output terminal, and also propagating a fourth of the input signal to first and second opposite-phase output terminals, the signal propagated to the first and second opposite-phase output terminals lagging 180 degrees behind the signal propagated to the in-phase output terminal; first and second power amplifier circuits connected to the first and second opposite-phase output terminals of the first balun and having the same characteristics; a third power amplifier circuit connected to the in-phase output terminal of the first balun and having output power substantially twice as much as the output power of the first or second power amplifier circuit; and a second balun having first and second opposite-phase input terminals for receiving the outputs of the first and second power amplifier circuits, having an in-phase input terminal for receiving the output of the third power amplifier circuit, combining the outputs of t
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: February 10, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kaoru Ishida, Masayuki Miyaji, Hiroaki Kosugi, Shin'ichi Kugou
  • Publication number: 20030197574
    Abstract: A balun design incorporating the functions of a splitter (combiner) which can be employed in a high power amplifier circuit configuration. The balun is formed of a dielectric multilayer board with conductor patterns on each conductor pattern layer. The balun includes the propagation of a half of an input signal to an in-phase output terminal, and also propagating a fourth of the input signal to first and second opposite-phase output terminals, the signal propagated to the first and second opposite-phase output terminals lagging 180 degrees behind the signal propagated to the in-phase output terminal. The balun provides the output signals at the first and second opposite-phase output terminals 180° out of phase employing through holes in the main line and coupling lines for promoting electromagnetic coupling therebetween.
    Type: Application
    Filed: May 15, 2003
    Publication date: October 23, 2003
    Inventors: Kaoru Ishida, Masayuki Miyaji, Hiroaki Kosugi, Shin?apos;ichi Kugou
  • Patent number: 6590906
    Abstract: To reduce the size of a multi-carrier transmitter circuit for a mobile communication base station, by suppressing instantaneous peak output power to a small value with respect to a wide-band signal of a few MHz to tens of MHz so that the peak factor of a multi-carrier signal is reduced.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: July 8, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kaoru Ishida, Masayuki Miyaji, Hiroaki Kosugi, Shin'ichi Kugou
  • Publication number: 20030122619
    Abstract: It is difficult that the impedance of the circuit part on the output side of an amplifying element at the frequency of a modulating wave is lower, and consequently, it is difficult to more effectively use the linearity of the amplifying element. The phase of a signal of the frequency of the modulating wave included in an amplified signal output from a FET is inverted by a difference frequency inverting circuit. The inverted signal of the frequency of the modulating wave and a signal of the frequency of a modulated wave included in an amplified signal output from a FET cancel each other out at the drain of the FET. At the drain end of the FET, the signal of the frequency of the modulating wave included in the amplified signal of the FET and a signal of the frequency of the modulating wave output from the FET cancel each other out.
    Type: Application
    Filed: November 18, 2002
    Publication date: July 3, 2003
    Inventors: Kaoru Ishida, Toshimitsu Matsuyoshi, Masayuki Miyaji
  • Patent number: 6563395
    Abstract: A balun design incorporating the functions of a splitter (combiner) which can be employed in a high power amplifier circuit configuration. The balun is formed of a dielectric multilayer board with conductor patterns on each conductor pattern layer. The balun includes the propagation of a half of an input signal to an in-phase output terminal, and also propagating a fourth of the input signal to first and second opposite-phase output terminals, the signal propagated to the first and second opposite-phase output terminals lagging 180 degrees behind the signal propagated to the in-phase output terminal. The balun provides the output signals at the first and second opposite-phase output terminals 180° out of phase employing through holes in the main line and coupling lines for promoting electromagnetic coupling therebetween.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: May 13, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kaoru Ishida, Masayuki Miyaji, Hiroaki Kosugi, Shin'ichi Kugou
  • Patent number: 6545542
    Abstract: A power amplifier that reduces intermodulation distortion generated by the amplifier while reducing the number of parts is provided. A power amplifier comprises a first balun, to which a combined signal combining two signals of different frequencies is inputted, and which outputs, based on the combined signal, the first and the second signal whose phase are opposite; a first amplifier that outputs the first amplified signal containing the differential frequency component comprising the difference of the frequencies of two signals from the first signal; a second amplifier that outputs the second amplified signal containing the component comprising the difference of the frequencies of two signals from the second signal; and a second balun that outputs the combined signal of the first and the second amplified signals. The component contained in the first and the second amplified signal are inputted via the second and the first amplifier, respectively, to reduce the component.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: April 8, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Toshimitsu Matsuyoshi, Kaoru Ishida, Masayuki Miyaji, Seiji Fujiwara
  • Publication number: 20020113648
    Abstract: A feedforward amplifier includes a first power splitter for dividing an input signal into two paths. The first path, in sequence, includes a first vector adjuster, a main amplifier, a second power splitter and a delay circuit. The second path, in sequence, includes a delay circuit, a distortion detecting power combiner, a second vector adjuster and an error amplifier. The distortion detecting power combiner combines a portion of a signal from the first path with a signal in the second path. Each vector adjuster adjusts amplitude and phase of a signal in each path. A distortion suppression power combiner synthesizes a signal in the first path with a signal in the second path. Control is included for stopping operation of the error amplifier or main amplifier based on a predetermined condition.
    Type: Application
    Filed: September 21, 2001
    Publication date: August 22, 2002
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masayuki Miyaji, Kaoru Ishida, Toshimitsu Matsuyoshi, Seiji Fujiwara
  • Publication number: 20020097088
    Abstract: A high power amplifier has a first balun propagating a half of an input signal to an in-phase output terminal, and also propagating a fourth of the input signal to first and second opposite-phase output terminals, the signal propagated to the first and second opposite-phase output terminals lagging 180 degrees behind the signal propagated to the in-phase output terminal; first and second power amplifier circuits connected to the first and second opposite-phase output terminals of the first balun and having the same characteristics;a third power amplifier circuit connected to the in-phase output terminal of the first balun and having output power substantially twice as much as the output power of the first or second power amplifier circuit; and a second balun having first and second opposite-phase input terminals for receiving the outputs of the first and second power amplifier circuits, having an in-phase input terminal for receiving the output of the third power amplifier circuit, combining the outputs of th
    Type: Application
    Filed: March 22, 2002
    Publication date: July 25, 2002
    Inventors: Kaoru Ishida, Masayuki Miyaji, Hiroaki Kosugi, Shin?apos;Ichi Kugou
  • Publication number: 20020067211
    Abstract: A power amplifier that reduces intermodulation distortion generated by the amplifier while reducing the number of parts is provided. A power amplifier comprises a first balun, to which a combined signal combining two signals of different frequencies is inputted, and which outputs, based on the combined signal, the first and the second signal whose phase are opposite; a first amplifier that outputs the first amplified signal containing the differential frequency component comprising the difference of the frequencies of two signals from the first signal; a second amplifier that outputs the second amplified signal containing the component comprising the difference of the frequencies of two signals from the second signal; and a second balun that outputs the combined signal of the first and the second amplified signals. The component contained in the first and the second amplified signal are inputted via the second and the first amplifier, respectively, to reduce the component.
    Type: Application
    Filed: October 22, 2001
    Publication date: June 6, 2002
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Toshimitsu Matsuyoshi, Kaoru Ishida, Masayuki Miyaji, Seiji Fujiwara
  • Patent number: 6326845
    Abstract: A feedforward amplifier includes a power divider for dividing the input signal into first and second signals. The first signal is processed in a first path that includes, in sequence, a first vector adjuster, a main amplifier, a directional coupler and a delay circuit. The second signal is delayed in a second path that includes, in sequence, another delay circuit, a first power combiner and an auxiliary amplifier block. The first power combiner combines the first signal, by way of a coupling port from the directional coupler, with the second signal to provide a combined signal into the auxiliary amplifier block. The auxiliary amplifier block further divides the second signal into two divided signals, each having a respective non-overlapping frequency band. The two divided signals are respectively vector adjusted, amplified, and then recombined. The recombined signal is then recombined with the processed signal in the first path to provide the desired output signal.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: December 4, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masayuki Miyaji, Kaoru Ishida, Hiroaki Kosugi, Shin'ichi Kugou
  • Patent number: 6300848
    Abstract: According to the configuration the present power splitter, it is possible to reduce the characteristic impedance of a transmission line constituting a directional coupler by setting the impedance of a first terminal pair constituted of an input port 7a and a second output port 7d of a 6-dB branch-line-shaped directional coupler 7 to a value smaller than a reference impedance Z0 (50 &OHgr; in general) and setting the impedance of a second terminal pair constituted of an isolation port 7b and a first output port 7c of the directional coupler 7 to Z0. Therefore, it is possible to increase the number of splits and reduce loss, as compared with conventional cases.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: October 9, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masayuki Miyaji, Kaoru Ishida, Hiroaki Kosugi, Shin'ichi Kugou