Patents by Inventor Patrick H. Conway

Patrick H. Conway 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).

  • RF digital-to-analog converter
    Patent number: 5394122
    Abstract: A digital-to analogue converter for producing an RF output signal proportional to a digital input word of N bits from an RF reference input, N being an integer greater or equal to 2. The converter comprises a plurality of power splitters, power combiners and a plurality of mixers or RF switches connected in a predetermined configuration.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: February 28, 1995
    Assignee: Duly Research Incorporated
    Inventors: Patrick H. Conway, David U. L. Yu
  • Feed-forward digital phase and amplitude correction system
    Patent number: 5365190
    Abstract: Phase and amplitude modifications in repeatable RF pulses at the output of a high power pulsed microwave amplifier are made utilizing a digital feed-forward correction system. A controlled amount of the output power is coupled to a correction system for processing of phase and amplitude information. The correction system comprises circuitry to compare the detected phase and amplitude with the desired phase and amplitude, respectively, and a digitally programmable phase shifter and attenuator and digital logic circuitry to control the phase shifter and attenuator. The Phase and amplitude of subsequent are modified by output signals from the correction system.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: November 15, 1994
    Assignee: Duly Research, Inc.
    Inventors: David U. L. Yu, Patrick H. Conway