Coaxial Or Shielded Patents (Class 333/222)
With tuning (Class 333/223)
  • Frequency selective ferrimagnetic power limiter
    Patent number: 4193047
    Abstract: Two sectoral radial resonators coupled at their centers of radii by a strip transmission line and doubly loaded with opposing ferrimagnetic spheres between the said strip transmission line and the ground planes provides a frequency selective power limiter.
    Type: Grant
    Filed: May 2, 1978
    Date of Patent: March 11, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Philip S. Carter, Steven N. Stitzer, Harry Goldie
  • Inductance coil for telecommunication system and method of making same
    Patent number: 4188599
    Abstract: A conductive coil, designed to be used as an inductance in a resonant cavity, comprises a metal strip integrally cut or etched from a sheet with a branch diverging from the main stem of the strip in the vicinity of one extremity thereof bent at an obtuse angle, that extremity ending in an enlarged terminal tab serving as a ground connection. After formation of the strip, the terminal tab is bent at right angles to the extremity whereas a major strip portion is helically wound about an axis in line with the center of the terminal tab.
    Type: Grant
    Filed: December 15, 1977
    Date of Patent: February 12, 1980
    Assignee: Societa Italiana Telecomunicazioni Siemens S.p.A.
    Inventor: Franco Papa