Patents by Inventor Philip M. Robertson

Philip M. Robertson 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: 10818996
    Abstract: A power sampler may include a sampling circuit interposed in one leg of a differential-signal circuit. An input balun may convert a single-ended signal from a signal source into a differential signal on first and second differential-signal input ports. An output balun may convert an output differential signal to a single-ended output signal to a signal load. The sampling circuit may include an inductance and a coupling circuit. The inductance may be an inductor and have an impedance higher than a source impedance. The coupling circuit, which may be a balun, is connected to the inductance and outputs a single-ended sample signal having a magnitude proportional to the inductance impedance at the design frequency. A second coupling-circuit output conducts an output differential signal and may be connected to the output balun.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: October 27, 2020
    Assignee: Werlatone, Inc.
    Inventors: Allen F. Podell, Philip M. Robertson, Carl G. Schuster, Bernard J. Werlau, Ky-Hien Do
  • Patent number: 9325051
    Abstract: A transmission-line network may include a transmission-line sub-network. The sub-network may include at least first and second transmission lines having respective first ends connected electrically in series relative to a first circuit node and respective second ends connected electrically in parallel relative to a second circuit node. A third transmission line may have a first end directly connected to the second circuit node and a second end electrically connected to the second end of the first transmission line. A fourth transmission line may have a first end directly connected to the second circuit node and a second end electrically connected to the second end of the second transmission line. The transmission-line network may further include an impedance assembly disposed relative to the third and fourth transmission lines configured to produce resistance between the second end of the third transmission line and the second end of the fourth transmission line.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: April 26, 2016
    Assignee: Werlatone, Inc.
    Inventors: Allen F. Podell, Ky-Hien Do, Philip M. Robertson, III