Patents Assigned to EMC Automation, Inc.
  • Compact, broadband antennas based on folded, top-loaded broadband dipoles with high-pass tuning elements
    Patent number: 6208306
    Abstract: A compact, electrically-small broadband antenna which combines a folded, top-loaded antenna geometry using broadband radiating elements with a series capacitance applied at the antenna feed is provided. The antenna can be used alone or in combination with a frequency-independent antenna such as a log-periodic dipole array. Additional antenna elements may also be included to improve the transition between the antenna and such a frequency-independent antenna.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: March 27, 2001
    Assignee: EMC Automation, Inc.
    Inventors: James S. McLean, Gentry E. Crook
  • Extensible top-loaded biconical antenna
    Patent number: 6154182
    Abstract: An extensible top-loaded biconical antenna is modified to improve low frequency performance while retaining standard performance specifications when needed. The biconical antenna includes a balun and a pair of conical outrigger assemblies coupled to said balun. A conducting tophat plate is removably attached to the ends of each outrigger assembly. The tophats increase the capacitance of the antenna, thereby improving its low frequency gain by 10 dB or more.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: November 28, 2000
    Assignee: EMC Automation, Inc.
    Inventor: James Stuart McLean