Patents Assigned to Northrop Grumman Corporaiton
  • Fabrication of ferrite toroids
    Patent number: 5876539
    Abstract: A method of fabricating ferrite toroids used in ferrite phase shifters. The method employs fabrication techniques found in low temperature cofired ceramics (LTCC) tape technology and involves fabricating long rectangular through-holes, as is required by the toroid design, in layers of green ceramic tape and maintaining the integrity of the through-holes during a firing process wherein ferromagnetic ceramic oxide in the tape is converted to ferrite.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: March 2, 1999
    Assignee: Northrop Grumman Corporaiton
    Inventors: Alex E. Bailey, John Chino, Dennis Grube, Andrea Curbean, Tapan Gupta, Ronnie L. Starling