Patents by Inventor Jeffrey D. Steele

Jeffrey D. Steele 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).

  • Broadband waveguide phase shifter
    Patent number: 4654611
    Abstract: A phase shifter for microwave electromagnetic energy propagating through a waveguide has a composite structure of a series of capacitive phase shifting posts positioned within the waveguide diametrically across from a symmetrically tapered ridge. The series of posts introduce a nominal value of phase shift with an incremental value which increases with increasing frequency of the electromagnetic energy. The tapered ridge introduces a nominal value of phase shift plus an incremental value which decreases with increasing frequency of the electromagnetic energy. The rates of increase and decrease of the incremental values of phase shift cancel so as to provide a resultant phase shift which is substantially invariant with frequency.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: March 31, 1987
    Assignee: Hughes Aircraft Company
    Inventors: Mon N. Wong, Jeffrey D. Steele