Patents by Inventor Ching F. Cho

Ching F. Cho has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Microwave amplitude equalizer circuit
    Patent number: 5389901
    Abstract: A modified branch line coupler amplitude equalizer circuit employing cross arms and branch lines of varying lengths and impedances to minimize the return loss of the circuit.
    Type: Grant
    Filed: March 23, 1993
    Date of Patent: February 14, 1995
    Assignee: ITT Corporation
    Inventors: William G. Sterns, Ching F. Cho
  • Corrugated antenna feed horn with means for radiation pattern control
    Patent number: 4477816
    Abstract: A horn feed for use with a reflector for generating a narrow beam of radiated energy in a radar system. The horn includes surface corrugations and provides a unique configuration of horn flare angle, length of the corrugation pattern along the horn inside surface in the direction of radiation and the cross-sectional dimension of the horn at the beginning of the corrugation pattern, for the minimization of sidelobe generation and optimum illumination of the reflector.
    Type: Grant
    Filed: July 14, 1982
    Date of Patent: October 16, 1984
    Assignee: International Telephone & Telegraph Corporation
    Inventor: Ching F. Cho