Patents by Inventor Prakash Bhartia

Prakash Bhartia 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).

  • High performance dipole feed for reflector antennas
    Patent number: 4982198
    Abstract: A dipole feed for a paraboloidal reflector antenna uses a conical reflector to direct the radiation of the dipole towards the concave reflecting surface of the parabola. The size and apex angle of the conical reflector are optimized to yield the desired feed pattern, the optimization parameters depending on the reflector size and focal length and being obtained numerically or experimentally to maximize reflector gain.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: January 1, 1991
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: Lotfollah Shafai, Prakash Bhartia
  • Broadband microstrip antennas with varactor diodes
    Patent number: 4529987
    Abstract: A microstrip antenna is disclosed consisting of a flat metallic patch spaced from the ground plane. To increase the bandwidth of the antenna a pair of varactor diodes are provided positioned at opposite sides of the patch and connected between it and the ground plane.
    Type: Grant
    Filed: April 21, 1983
    Date of Patent: July 16, 1985
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian Government
    Inventors: Prakash Bhartia, Inder J. Bahl