Patents Assigned to The United States of Americal as represented by the Secretary of the Army
  • Hemispherical coverage microstrip antenna
    Patent number: 4316194
    Abstract: A single antenna having hemispherical coverage with circular polarization very low axial ratio is disclosed. Its pancake structure comprises two stacked microstrip antennas, one atop the other, each fed phase shifted in relation to the other.Used as transmitter or receiver antenna, it replaces conventional hemispherical types with an extremely compact and relatively inexpensive device.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: February 16, 1982
    Assignee: The United States of Americal as represented by the Secretary of the Army
    Inventors: Charles M. De Santis, John R. Wills