Patents by Inventor Yoshikatsu Okabe

Yoshikatsu Okabe 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).

  • Antenna element having non-feed conductive loop surrounding radiating element
    Patent number: 4516133
    Abstract: The directivity as well as the gain of an antenna element associated with a finite length reflector, which includes a feed antenna such as a dipole antenna and a reflector having a finite length of several wavelengths or less, are improved by disposing a non-feed loop element having a peripheral length of about 2 wavelengths along a common imaginary plane with the feed antenna so as to surround the feed antenna. Preferably, the non-feed loop element is disposed in parallel to the reflector, and more preferably it is disposed nearly symmetrically with respect to the center of the feed antenna.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: May 7, 1985
    Assignee: Japan Radio Company, Limited
    Inventors: Shigeru Matsumoto, Yoshikatsu Okabe, Yasuhiro Kazama