Patents by Inventor Ryotaro Manabe

Ryotaro Manabe 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).

  • Multibeam antenna
    Patent number: 6864850
    Abstract: When a converter 14 is rotated via a rotation mechanism 17, the arrangement inclination angle of two primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. with respect to an axis which is in parallel with the ground. Also the reception polarization angle due to probes of the primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. while maintaining a preset difference in polarization angle among the satellites. Therefore, the arrangement inclination angle of the primary radiators 15a and 15b for respectively receiving signals from the two satellites, and the reception polarization angle in the primary radiators 15a and 15b can be simultaneously easily adjusted by rotating the converter 14 via the rotation mechanism 17.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: March 8, 2005
    Assignee: Yagi Antenna Co., Ltd.
    Inventors: Hiroaki Imaizumi, Koji Sakauchi, Shuji Hagiwara, Hirofumi Higuchi, Ryotaro Manabe
  • Multibeam antenna
    Publication number: 20020097187
    Abstract: When a converter 14 is rotated via a rotation mechanism 17, the arrangement inclination angle of two primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. with respect to an axis which is in parallel with the ground. Also the reception polarization angle due to probes of the primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. while maintaining a preset difference in polarization angle among the satellites. Therefore, the arrangement inclination angle of the primary radiators 15a and 15b for respectively receiving signals from the two satellites, and the reception polarization angle in the primary radiators 15a and 15b can be simultaneously easily adjusted by rotating the converter 14 via the rotation mechanism 17.
    Type: Application
    Filed: March 22, 2002
    Publication date: July 25, 2002
    Applicant: YAGI ANTENNA CO., LTD.
    Inventors: Hiroaki Imaizumi, Koji Sakauchi, Shuji Hagiwara, Hirofumi Higuchi, Ryotaro Manabe
  • Multibeam antenna
    Patent number: 6388633
    Abstract: When a converter 14 is rotated via a rotation mechanism 17, the arrangement inclination angle of two primary radiators 15a and 16b can be adjusted in the range of 0 to 20 deg. with respect to an axis which is in parallel with the ground. Also the reception polarization angle due to probes of the primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. while maintaining a preset difference in polarization angle among the satellites. Therefore, the arrangement inclination angle of the primary radiators 15a and 16b for respectively receiving signals from the two satellites, and the reception polarization angle in the primary radiators 15a and 15b can be simultaneously easily adjusted by rotating the converter 14 via the rotation mechanism 17.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: May 14, 2002
    Assignee: Yagi Antenna Co., Ltd.
    Inventors: Hiroaki Imaizumi, Koji Sakauchi, Shuji Hagiwara, Hirofumi Higuchi, Ryotaro Manabe
  • Multibeam antenna
    Patent number: 6121939
    Abstract: When a converter 14 is rotated via a rotation mechanism 17, the arrangement inclination angle of two primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. with respect to an axis which is in parallel with the ground. Also the reception polarization angle due to probes of the primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. while maintaining a preset difference in polarization angle among the satellites. Therefore, the arrangement inclination angle of the primary radiators 15a and 15b for respectively receiving signals from the two satellites, and the reception polarization angle in the primary radiators 15a and 15b can be simultaneously easily adjusted by rotating the converter 14 via the rotation mechanism 17.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: September 19, 2000
    Assignee: Yagi Antenna Co., Ltd.
    Inventors: Hiroaki Imaizumi, Koji Sakauchi, Shuji Hagiwara, Hirofumi Higuchi, Ryotaro Manabe
  • Multibeam antenna
    Patent number: 6052099
    Abstract: When a converter 14 is rotated via a rotation mechanism 17, the arrangement inclination angle of two primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. with respect to an axis which is in parallel with the ground. Also the reception polarization angle due to probes of the primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. while maintaining a preset difference in polarization angle among the satellites. Therefore, the arrangement inclination angle of the primary radiators 15a and 15b for respectively receiving signals from the two satellites, and the reception polarization angle in the primary radiators 15a and 15b can be simultaneously easily adjusted by rotating the converter 14 via the rotation mechanism 17.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: April 18, 2000
    Assignee: Yagi Antenna Co., Ltd.
    Inventors: Hiroaki Imaizumi, Koji Sakauchi, Shuji Hagiwara, Hirofumi Higuchi, Ryotaro Manabe