Patents by Inventor M. D. Sohigian

M. D. Sohigian 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).

  • Apparatus and method for utilizing an AC detection scalar network analyzer with a CW signal source
    Patent number: 4647845
    Abstract: A method and apparatus for using an AC detection network analyzer with either a pulsed RF or a CW source signal is disclosed. An AC/DC detector is placed between an AC detection network analyzer and a device under test. If a source signal is a pulsed RF signal the AC/DC detector can be switched to transform the pulsed RF signal to produce an AC signal for the network analyzer. If the signal source is a CW signal, the AC/DC detector can be switched to rectify the CW signal, modulate the CW signal, sample the CW signal, and filter the CW signal. This will also produce the AC signal for the network analyzer.
    Type: Grant
    Filed: September 20, 1984
    Date of Patent: March 3, 1987
    Assignee: Hewlett-Packard Company
    Inventors: Kenneth A. Richter, M. D. Sohigian, John C. Faick