Patents by Inventor Akiko Kochi

Akiko Kochi 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).

  • Dielectric resonator device, high frequency filter, and high frequency oscillator
    Patent number: 6943651
    Abstract: A dielectric resonator device includes a dielectric substrate. Electrode films are formed on the front and back surfaces of the dielectric substrate, respectively. A TE010-mode resonator is constituted by two circular openings which oppose each other and which are formed in the electrode films. Two opposing slots formed in the electrode films constitute a planar dielectric transmission line (PDTL). The PDTL is connected to the TE010-mode resonator. An excitation section is formed by extending two portions of each electrode film on two side of each slot into each opening.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: September 13, 2005
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kazutaka Mukaiyama, Shigeyuki Mikami, Hiroyasu Matsuzaki, Kiyoharu Kochi, Akiko Kochi, Takahiro Baba, Koichi Sakamoto, Tetsuya Kochi
  • High-frequency circuit device and transmitter/receiver
    Patent number: 6891452
    Abstract: A high-frequency circuit device includes a dielectric substrate. A planar conductor is provided on each of top and bottom surfaces of the dielectric substrate and a slot line is formed on the top surface. Also, undesired-wave propagation preventing circuits, each including multistage band-elimination filters, are provided on the top surface of the dielectric substrate, with the slot line therebetween. Each of the band-elimination filters includes two conductive lines and a resonator which is provided at a portion of one of the conductive lines and which includes two spiral lines. Accordingly, propagation of an undesired wave of the band whose center is the resonance frequency of the resonator can be prevented.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: May 10, 2005
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shigeyuki Mikami, Kiyoharu Kochi, Akiko Kochi, Hiroyasu Matsuzaki, Kazutaka Mukaiyama, Koichi Sakamoto, Yohei Ishikawa, Tetsuya Kouchi
  • High-frequency circuit device and transmitter/receiver
    Publication number: 20040041668
    Abstract: A high-frequency circuit device includes a dielectric substrate. A planar conductor is provided on each of top and bottom surfaces of the dielectric substrate and a slot line is formed on the top surface. Also, undesired-wave propagation preventing circuits, each including multistage band-elimination filters, are provided on the top surface of the dielectric substrate, with the slot line therebetween. Each of the band-elimination filters includes two conductive lines and a resonator which is provided at a portion of one of the conductive lines and which includes two spiral lines. Accordingly, propagation of an undesired wave of the band whose center is the resonance frequency of the resonator can be prevented.
    Type: Application
    Filed: February 26, 2003
    Publication date: March 4, 2004
    Inventors: Shigeyuki Mikami, Tetsuya Kochi, Hiroyasu Matsuzaki, Kazutaka Mukaiyama, Koichi Sakamoto, Yohei Ishikawa, Kiyoharu Kochi, Akiko Kochi
  • Dielectric resonator device, high frequency filter, and high frequency oscillator
    Publication number: 20040021531
    Abstract: A dielectric resonator device includes a dielectric substrate. Electrode films are formed on the front and back surfaces of the dielectric substrate, respectively. A TE010-mode resonator is constituted by two circular openings which oppose each other and which are formed in the electrode films. Two opposing slots formed in the electrode films constitute a planar dielectric transmission line (PDTL). The PDTL is connected to the TE010-mode resonator. An excitation section is formed by extending two portions of each electrode film on two side of each slot into each opening.
    Type: Application
    Filed: April 17, 2003
    Publication date: February 5, 2004
    Inventors: Kazutaka Mukaiyama, Shigeyuki Mikami, Hiroyasu Matsuzaki, Tetsuya Kochi, Takahiro Baba, Koichi Sakamoto, Kiyoharu Kochi, Akiko Kochi