Waveguide Elements And Components Patents (Class 333/248)
Bend (Class 333/249)
Active element mounting (Class 333/250)
Mode suppressor (Class 333/251)
Window (Class 333/252)
Including variable impedance (Class 333/253)
Connectors and interconnections (Class 333/254)
Switch (Class 333/258)
  • Microwave YIG power limiter using electrically thin iris
    Patent number: 4155054
    Abstract: A ferrimagnetic sphere that is biased to the subsidiary resonance mode and placed within a microwave slotted resonant structure functions as a frequency selective microwave power limiter. When the power level of a signal at the input port exceeds a threshold level, the device prevents the power level at the output port from increasing further. A weak signal present simultaneously passes with relatively little attenuation if it is slightly offset in frequency.
    Type: Grant
    Filed: November 23, 1977
    Date of Patent: May 15, 1979
    Assignee: The Unites States of America as represented by the Secretary of the Air Force
    Inventors: Harry Goldie, Steven N. Stitzer
  • Microwave heating devices
    Patent number: 4144434
    Abstract: In a microwave cylindrical heating TM.sub.010 cavity for continuous heating of rods, wires, etc. . . focussing means are provided surrounding the entry and or the exit to locally concentrate the microwave energy on the object to be heated. Said means consists in 45.degree. annular wedge. As variants focussing is achieved by ferromagnetic annulus.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: March 13, 1979
    Assignee: Societe Lignes Telegraphiques et Telephoniques
    Inventors: Bernard Chiron, Michel DE Vecchis