Patents by Inventor Randall L. Mullinax

Randall L. Mullinax 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).

  • Method and apparatus for improving the isolation characteristics of HD radio combiners
    Patent number: 7831222
    Abstract: A method and system are provided for improving the isolation characteristics of a combiner. In a system comprising a digital and analog radio signal combiner and a digital transmitter, an analog transmitter, an antenna, and a reject load coupled to the combiner, adjusting an impedance matching device coupled between the reject load and combiner so as to reduce the energy transmitted from the digital transmitter to the analog transmitter through the combiner.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: November 9, 2010
    Assignee: Clear Channel Management Services, Inc.
    Inventors: Randall L. Mullinax, Michael Gideon