Patents by Inventor Richard M. Hoffmeister

Richard M. Hoffmeister 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).

  • Patent number: 5668509
    Abstract: A vertical, right angle transition to a GCPW transmission line using a modified coaxial transmission line. The solderless interconnect provides a transition from a GCPW in a horizontal plane to a vertical plane. The modified coaxial line has a portion of the outer shield removed from the front, and is placed vertically on the center conductor of a GCPW. The coaxial shield connects both ground planes of the GCPW. The transition can be employed to form an interconnect between a stacked assembly of microwave hybrids.
    Type: Grant
    Filed: March 25, 1996
    Date of Patent: September 16, 1997
    Assignee: Hughes Electronics
    Inventors: Richard M. Hoffmeister, Clifton Quan
  • Patent number: 5561405
    Abstract: Interconnection apparatus providing a right angle H-plane bend in grounded coplanar waveguide (GCPW) transmission line media. Respective first and second GCPW lines include a dielectric substrate, on which is formed on a bottom surface a bottom conductive ground plane, and on a top surface is formed a center conductor strip sandwiched between first and second top ground plane strips. The two GCPW lines are disposed orthogonally, forming a corner junction at which corresponding bottom and top ground planes, and the center conductor strips, of the lines are electrically connected. The gaps between corresponding top ground plane strips and the center conductor strips have regions of increased gap width at the corner junction to compensate for the capacitance resulting from the junction.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: October 1, 1996
    Assignee: Hughes Aircraft Company
    Inventors: Richard M. Hoffmeister, Clifton Quan