Patents by Inventor Valdis V. Liepa

Valdis V. Liepa 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: 5311201
    Abstract: A multi-band antenna includes conductive tubular section that provides the major physical support for the antenna and functions as the major element of the antenna on the long wavelength band and a half wavelength center feed dipole with a choke located at the end of the tubular section that serves and the short wavelength antenna. The half wavelength dipole includes a coaxial cable disposed within the tubular section extending a quarter wavelength of the short wavelength band beyond the tubular section. A solid conductor of a quarter wavelength forms an extension of the central conductor of the coaxial cable. A rigid dielectric cylinder accommodates the extension of the coaxial cable and the solid conductor providing physical support and rigidity. A choke includes a short between the outer conductive shield of the coaxial cable and the tubular section is located one quarter wavelength from the remote end of the tubular section.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: May 10, 1994
    Assignee: Tri-Band Technologies, Inc.
    Inventors: Michael R. Lillie, Valdis V. Liepa