Patents by Inventor Kazuhiko Ikeda

Kazuhiko Ikeda 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).

  • Patent number: 7495618
    Abstract: The present invention discloses an antenna apparatus including a dielectric substrate on which an element including a conductive material pattern is formed. The dielectric substrate is a film.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: February 24, 2009
    Assignee: Fujitsu Component Limited
    Inventors: Shigemi Kurashima, Masahiro Yanagi, Hideki Iwata, Takashi Arita, Takashi Yuba, Kazuhiko Ikeda, Yuriko Segawa
  • Publication number: 20080122705
    Abstract: The present invention discloses an antenna apparatus including a dielectric substrate on which an element including a conductive material pattern is formed. The dielectric substrate is a film.
    Type: Application
    Filed: January 10, 2008
    Publication date: May 29, 2008
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Shigemi Kurashima, Masahiro Yanagi, Hideki Iwata, Takashi Arita, Takashi Yuba, Kazuhiko Ikeda, Yuriko Segawa
  • Publication number: 20080057794
    Abstract: An electrical connector comprises a housing and a terminal held by the housing. The terminal is provided with a first surface exposed form the housing and a second surface contacted with the housing. The first surface is plated, and the second surface is not plated.
    Type: Application
    Filed: August 23, 2007
    Publication date: March 6, 2008
    Inventors: Masayuki Goto, Kazuhiko Ikeda, Fumio Oshita
  • Publication number: 20080055183
    Abstract: An antenna apparatus is disclosed that includes a synthetic resin case having an antenna element accommodating portion and a ground element accommodating portion, an antenna element made of punched sheet metal that is accommodated within the antenna element accommodating portion, a ground element made of punched sheet metal that is accommodated within the ground element accommodating portion and aligned with the antenna element, a surface mount coaxial connector that is mounted over an interface between the antenna element and the ground element, and a cover that covers the antenna element and the ground element.
    Type: Application
    Filed: May 25, 2007
    Publication date: March 6, 2008
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Takashi Yuba, Shigemi Kurashima, Hideki Iwata, Masahiro Yanagi, Takashi Arita, Toshihiro Kusagaya, Kazuhiko Ikeda, Hiroshi Matsumiya, Kazuo Nomura
  • Patent number: 7339533
    Abstract: The present invention discloses an antenna apparatus including a dielectric substrate on which an element including a conductive material pattern is formed. The dielectric substrate is a film.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: March 4, 2008
    Assignee: Fujitsu Component Limited
    Inventors: Shigemi Kurashima, Masahiro Yanagi, Hideki Iwata, Takashi Arita, Takashi Yuba, Kazuhiko Ikeda, Yuriko Segawa
  • Publication number: 20080039024
    Abstract: An amplifying circuit which can provide an output signal having less distortion at high power efficiency without increasing the circuit scale and the sizes of the entire device. The amplifying circuit (100) generates two constant envelope signals from an OFDM signal inputted to an S/P converting section (131), and after amplifying each of the constant envelope signals by two amplifiers (111, 112), respectively, the signals are combined by a combiner (113) and a transmission signal is provided. At this time, a pilot signal generating section (102) adds a pilot signal whose frequency orthogonally intersects with that of an OFDM subcarrier to the two constant envelope signals, extracts a pilot signal from the transmission signal of output, and controls a vector adjusting section (105) so that the gains or the phases of the two systems are equivalent.
    Type: Application
    Filed: November 8, 2005
    Publication date: February 14, 2008
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Kazuhiko Ikeda, Takashi Izumi, Takashi Enoki
  • Publication number: 20070229360
    Abstract: A disclosed antenna apparatus includes: a punched out antenna element made of a sheet metal; a punched out ground element made of a sheet metal, the ground element facing the antenna element; and a surface mount type coaxial connector mounted across the antenna element and the ground element.
    Type: Application
    Filed: October 17, 2006
    Publication date: October 4, 2007
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Masahiro Yanagi, Shigemi Kurashima, Hideki Iwata, Takashi Yuba, Masahiro Kaneko, Yuriko Segawa, Takashi Arita, Toshihiro Kusagaya, Kazuhiko Ikeda, Hiroshi Matsumiya, Kazuo Nomura
  • Patent number: 7232528
    Abstract: The surface treatment agent for copper and copper alloys contains hydrogen peroxide, a mineral acid, an azole compound, silver ion and a halide ion. The surface treatment agent for copper and copper alloys is useful in the production of printed wiring boards in electronics industry. The surface treatment agent roughens the surface of copper and copper alloys. Particularly, the surface treatment agent can form a uniform and undulation-free roughened surface on copper-clad substrates having plated mirror surface, this having been difficult in conventional techniques, thereby significantly improving the adhesion to etching resists, solder resists, in addition, to prepregs and a resin for mounting electronic parts.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: June 19, 2007
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Akira Hosomi, Naoki Kogure, Kenichi Moriyama, Kenichi Takahashi, Atsushi Hosoda, Kazuhiko Ikeda
  • Publication number: 20070076814
    Abstract: An amplifier circuit capable of suppressing the circuit scale thereof and obtaining an output signal with high power efficiency and little distortion is disclosed. In this circuit, constant-envelope signal generating section (101) generates a plurality of constant-envelope signals from an input signal. Pilot signal generating section (102) generates a plurality of pilot signals associated with the generated plurality of constant envelope signals, the plurality of pilot signals having predetermined amplitudes, predetermined phases and predetermined frequencies, respectively, the phases and frequencies being different from each other. First addition section (103) and second addition section (104) add the plurality of pilot signals to the generated plurality of constant-envelope signals. First amplifier (111) and second amplifier (112) amplify the plurality of constant-envelope signals to which the plurality of pilot signals are added.
    Type: Application
    Filed: September 17, 2004
    Publication date: April 5, 2007
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazuhiko Ikeda, Takashi Izumi
  • Publication number: 20070030063
    Abstract: A circuit capable of improving communication quality. In this circuit, constant-envelope signal generating section (101) generates a first constant-envelope signal and a second constant-envelope signal from input signals (Si, Sq). Phase-shifter (102a) shifts the phase of the first constant-envelope signal by +?° and phase-shifter (102b) shifts the phase of the second constant-envelope signal by +?°. Local signal phase-shifter (107a) shifts the phase of the local signal from local oscillator (106) by ??°, and local signal phase-shifter (107b) shifts the phase of the local signal from local oscillator (106) by ??°. Mixers (103a, 103b) performs frequency-conversion of the first constant-envelope signal and the second constant-envelope signal from phase shifters (102a, 102b) using the local signals from local signal phase-shifters (107a, 107b). Amplifiers (104a, 104b) amplify signals from mixers (103a, 103b). Combining circuit (105) combines signals from amplifiers (104a, 104b).
    Type: Application
    Filed: October 20, 2004
    Publication date: February 8, 2007
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Izumi, Kazuhiko Ikeda, Makoto Sasaki
  • Publication number: 20070024293
    Abstract: In order to direct a probe having directivity that a received band is widened in accordance with a measurement distance, toward a DUT, shift the received band of the probe in sequence, receive electromagnetic, and measure electromagnetic interference, a plurality of long and short measurement distances between the probe and the DUT are set, and measurement at the long measurement distance and measurement at the short measurement distance are performed plural times. Herein, the measurement at the short measurement distance is performed on a received band where electromagnetic interference is measured by the measurement at the long measurement distance. Thus, measurement of electromagnetic interference can be performed with high accuracy in a short time.
    Type: Application
    Filed: July 7, 2006
    Publication date: February 1, 2007
    Applicant: Matsushita Electric Industrial., Ltd.
    Inventors: Hirofumi Kosaka, Kazuhiko Ikeda, Shoichi Kajiwara, Hiroyuki Tani, Yoichiro Ueda, Atsushi Yamamoto
  • Publication number: 20060286940
    Abstract: An array antenna transmission and reception apparatus that is simply configured to make it possible to reduce the size and weight and that separates and extracts respective phase calibration signals from radio signals to be transmitted and radio signals to be received passing through the same path. A directivity coupler (102) is provided with a first connection terminal (201) connected to an antenna element (101), a second connection terminal (202) connected to an antenna duplexer (103), a third connection terminal (203) with directivity toward the first connection terminal (201) and connected to a phase calibration received signal conversion section (111) and a fourth connection terminal (204) with directivity toward the second connection terminal (202) and connected to a phase calibration transmission signal conversion section (110).
    Type: Application
    Filed: April 2, 2004
    Publication date: December 21, 2006
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Takashi Izumi, Kazuhiko Ikeda, Takashi Enoki, Makoto Sasaki
  • Publication number: 20060202891
    Abstract: An array antenna reception apparatus capable of calibrating a received signal with high accuracy without generating unnecessary radiations at an antenna section even when the power level of the received signal is low. In this apparatus, reference signal generation section (123) operates only when the power level of the received signal captured by antenna section (111) is low and a reference signal is generated. Error calculation section (122) compares information (S3) on the received signal multiplexed with the reference signal with calibration signal (S4) to thereby calculate an error of the received signal produced in the received signal due to signal processing at reception unit (110) and instructs received signal processing section (121) to compensate for the received signal based on the calculated error of the received signal.
    Type: Application
    Filed: August 4, 2004
    Publication date: September 14, 2006
    Inventors: Takashi Izumi, Kazuhiko Takeyama, Kazuhiko Ikeda, Takashi Enoki, Makoto Sasaki
  • Publication number: 20060170597
    Abstract: The present invention discloses an antenna apparatus including a dielectric substrate on which an element including a conductive material pattern is formed. The dielectric substrate is a film.
    Type: Application
    Filed: January 30, 2006
    Publication date: August 3, 2006
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Shigemi Kurashima, Masahiro Yanagi, Hideki Iwata, Takashi Arita, Takashi Yuba, Kazuhiko Ikeda, Yuriko Segawa
  • Patent number: 7025598
    Abstract: A coaxial electrical connector includes an outer conductor (11) having a cylindrical fitting section (14) to fit onto the counter connector (60), a dielectric (12) placed in the outer conductor (11) and a center conductor (13) which is held by the dielectric (12). It further includes a cover section (16) to cover the other opened end of the cylindrical fitting section (14), and a surrounding section (17) to surround the cable C, which is connected to the connecting section (24) of the center conductor. The cover section (16) and the surrounding section (17) are bent at a linking section (18). The cover section (16) has a receiving section (19) on the inner surface which contacts with the tongue (22) of the dielectric (12), in order to place at least a part of the tongue (22) therein.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: April 11, 2006
    Assignee: Hirose Electric Co., Ltd.
    Inventor: Kazuhiko Ikeda
  • Patent number: 7021966
    Abstract: A right angle coaxial connector is fitted into a corresponding connector in a fitting direction substantially perpendicular to a direction that a connecting cable extends. The right angle coaxial connector includes an outer conductor having a cylindrical portion with an axial line in the fitting direction and a lid portion covering an inner space of the cylindrical portion and extending over a covering portion of the connecting cable. The lid portion is integrated with the cylindrical portion at a part of a periphery of the cylindrical portion through a bent connecting portion. The lid portion includes a holding portion at an extending end thereof for pressingly holding the connecting cable. The cylindrical portion includes engaging portions for engaging the corresponding connector. One of the engaging portions located at a position where the cable extends has an engaging amount larger than that of the other engaging portions at other positions.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: April 4, 2006
    Assignee: Hirose Electric Co., Ltd.
    Inventors: Kazuhiko Ikeda, Naoyuki Asano
  • Patent number: 6997745
    Abstract: A coaxial electrical connector is comprised of an outer conductor (11) having a cylindrical fitting section (14) to fit onto a counter connector (60), a dielectric (12) placed in the outer conductor (11) and a center conductor (13) which is held by the dielectric (12). It further includes a cover section (16) to cover the other opened end of the cylindrical fitting section (14), a pair of arms (15) which extend in the radial direction from the cylindrical fitting section, and a surrounding section (17) to surround a cable C and the arms. Narrowing sections (15B) which have smaller distance from each other than the distance between the pair of arms (15) are provided at the boundary portion between the cylindrical fitting section (14) and the pair of arms (15).
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: February 14, 2006
    Assignee: Hirose Electric Co., Ltd.
    Inventor: Kazuhiko Ikeda
  • Publication number: 20050136701
    Abstract: A coaxial electrical connector is comprised of an outer conductor (11) having a cylindrical fitting section (14) to fit onto a counter connector (60), a dielectric (12) placed in the outer conductor (11) and a center conductor (13) which is held by the dielectric (12). It further includes a cover section (16) to cover the other opened end of the cylindrical fitting section (14), a pair of arms (15) which extend in the radial direction from the cylindrical fitting section, and a surrounding section (17) to surround a cable C and the arms. Narrowing sections (15B) which have smaller distance from each other than the distance between the pair of arms (15) are provided at the boundary portion between the cylindrical fitting section (14) and the pair of arms (15).
    Type: Application
    Filed: December 9, 2004
    Publication date: June 23, 2005
    Inventor: Kazuhiko Ikeda
  • Publication number: 20050136700
    Abstract: A coaxial electrical connector includes an outer conductor (11) having a cylindrical fitting section (14) to fit onto the counter connector (60), a dielectric (12) placed in the outer conductor (11) and a center conductor (13) which is held by the dielectric (12). It further includes a cover section (16) to cover the other opened end of the cylindrical fitting section (14), and a surrounding section (17) to surround the cable C, which is connected to the connecting section (24) of the center conductor. The cover section (16) and the surrounding section (17) are bent at a linking section (18). The cover section (16) has a receiving section (19) on the inner surface which contacts with the tongue (22) of the dielectric (12), in order to place at least a part of the tongue (22) therein.
    Type: Application
    Filed: December 9, 2004
    Publication date: June 23, 2005
    Inventor: Kazuhiko Ikeda
  • Publication number: 20050061202
    Abstract: The surface treatment agent for copper and copper alloys contains hydrogen peroxide, a mineral acid, an azole compound, silver ion and a halide ion. The surface treatment agent for copper and copper alloys is useful in the production of printed wiring boards in electronics industry. The surface treatment agent roughens the surface of copper and copper alloys. Particularly, the surface treatment agent can form a uniform and undulation-free roughened surface on copper-clad substrates having plated mirror surface, this having been difficult in conventional techniques, thereby significantly improving the adhesion to etching resists, solder resists, in addition, to prepregs and a resin for mounting electronic parts.
    Type: Application
    Filed: June 18, 2002
    Publication date: March 24, 2005
    Inventors: Akira Hosomi, Naoki Kogure, Kenichi Moriyama, Kenichi Takahashi, Atsushi Hosoda, Kazuhiko Ikeda