Patents by Inventor James R. Callaway

James R. Callaway 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).

  • Multi-section velocity compensated microstrip directional coupler
    Patent number: 8587388
    Abstract: A directional coupler having (a) a first coupled microstrip section having a first terminus (T1) and a second terminus (T2), (b) a second coupled microstrip section having a first terminus at T2 and a second terminus (T3), and (c) a first phase-velocity-compensating capacitor connected across the conductors of the microstrip sections at T2 is disclosed. The coupler also may include a second phase-velocity-compensating capacitor connected at T1, and a third phase-velocity compensating capacitor connected across the conductors at T3.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: November 19, 2013
    Assignee: Spectrum Control, Inc.
    Inventors: Mark W. Ingalls, John Williams, James R. Callaway
  • Multi-Section Velocity Compensated Microstrip Directional Coupler
    Publication number: 20100225416
    Abstract: A directional coupler having (a) a first coupled microstrip section having a first terminus (T1) and a second terminus (T2), (b) a second coupled microstrip section having a first terminus at T2 and a second terminus (T3), and (c) a first phase-velocity-compensating capacitor connected across the conductors of the microstrip sections at T2 is disclosed. The coupler also may include a second phase-velocity-compensating capacitor connected at T1, and a third phase-velocity compensating capacitor connected across the conductors at T3.
    Type: Application
    Filed: February 10, 2010
    Publication date: September 9, 2010
    Inventors: Mark W. Ingalls, John Williams, James R. Callaway