Patents by Inventor Richard T. Webster

Richard T. Webster 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: 7700419
    Abstract: An insulated gate silicon nanowire transistor amplifier structure is provided and includes a substrate formed of dielectric material. A patterned silicon material may be disposed on the substrate and includes at least first, second and third electrodes uniformly spaced on the substrate by first and second trenches. A first nanowire formed in the first trench operates to electrically couple the first and second electrodes. A second nanowire formed in the second trench operates to electrically couple the second and third electrodes. First drain and first source contacts may be respectively disposed on the first and second electrodes and a first gate contact may be disposed to be capacitively coupled to the first nanowire. Similarly, second drain and second source contacts may be respectively disposed on the second and third electrodes and a second gate contact may be disposed to be capacitively coupled to the second nanowire.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: April 20, 2010
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Abul F Anwar, Richard T. Webster
  • Patent number: 7485908
    Abstract: An insulated gate silicon nanowire transistor amplifier structure is provided and includes a substrate formed of dielectric material. A patterned silicon material may be disposed on the substrate and includes at least first, second and third electrodes uniformly spaced on the substrate by first and second trenches. A first nanowire formed in the first trench operates to electrically couple the first and second electrodes. A second nanowire formed in the second trench operates to electrically couple the second and third electrodes. First drain and first source contacts may be respectively disposed on the first and second electrodes and a first gate contact may be disposed to be capacitively coupled to the first nanowire. Similarly, second drain and second source contacts may be respectively disposed on the second and third electrodes and a second gate contact may be disposed to be capacitively coupled to the second nanowire.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: February 3, 2009
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Abul F Anwar, Richard T. Webster
  • Publication number: 20080311712
    Abstract: An insulated gate silicon nanowire transistor amplifier structure is provided and includes a substrate formed of dielectric material. A patterned silicon material may be disposed on the substrate and includes at least first, second and third electrodes uniformly spaced on the substrate by first and second trenches. A first nanowire formed in the first trench operates to electrically couple the first and second electrodes. A second nanowire formed in the second trench operates to electrically couple the second and third electrodes. First drain and first source contacts may be respectively disposed on the first and second electrodes and a first gate contact may be disposed to be capacitively coupled to the first nanowire. Similarly, second drain and second source contacts may be respectively disposed on the second and third electrodes and a second gate contact may be disposed to be capacitively coupled to the second nanowire.
    Type: Application
    Filed: August 14, 2008
    Publication date: December 18, 2008
    Inventors: Abul F. Anwar, Richard T. Webster
  • Publication number: 20070262344
    Abstract: An insulated gate silicon nanowire transistor amplifier structure is provided and includes a substrate formed of dielectric material. A patterned silicon material may be disposed on the substrate and includes at least first, second and third electrodes uniformly spaced on the substrate by first and second trenches. A first nanowire formed in the first trench operates to electrically couple the first and second electrodes. A second nanowire formed in the second trench operates to electrically couple the second and third electrodes. First drain and first source contacts may be respectively disposed on the first and second electrodes and a first gate contact may be disposed to be capacitively coupled to the first nanowire. Similarly, second drain and second source contacts may be respectively disposed on the second and third electrodes and a second gate contact may be disposed to be capacitively coupled to the second nanowire.
    Type: Application
    Filed: August 18, 2005
    Publication date: November 15, 2007
    Inventors: A.F.M. Anwar, Richard T. Webster
  • Patent number: 4712078
    Abstract: A digital compensation circuit for improving the temperature stability of dielectric resonator oscillators is disclosed. A temperature sensor indicates a measure of ambient temperature which is correlated with an amount of phase shift necessary to compensate for frequency drift in a dielectric resonator oscillator. The correlation is made using a correction table or correction function which is determined empirically in a calibration process. The necessary phase shift is then supplied via a voltage controlled phase shifter. This phase shifter is part of the RF oscillation loop which also includes an amplifier, directional coupler and dielectric resonator filter (including microstrip).
    Type: Grant
    Filed: March 27, 1985
    Date of Patent: December 8, 1987
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Andrew J. Slobodnik, Jr., Martin R. Stiglitz, George A. Roberts, Richard T. Webster
  • Patent number: 4602182
    Abstract: An X-cut, 33.44 degree quartz crystal for propagating surface acoustic waves with a temperature stability in the order of -0.0209 ppm/C.sup.2. The crystal orientation requires only a single rotation (33.44.degree.) from the crystal axes. This orientation is substantially simpler than previously reported cuts with comparable temperature stability which typically require three rotations. The X cut orientation has a surface acoustic wave (SAW) velocity of 3175 m/sec, an electromechanical coupling (.DELTA.v/v) of 4.times.10.sup.-4, and a power flow angle of 2.7 degrees.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: July 22, 1986
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Richard T. Webster