Patents by Inventor Donald R. Martz

Donald R. Martz 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: 9161386
    Abstract: LMR and LTE transceivers are disposed within a portable radio housing. The LTE transceiver is configured to utilize two separate antennas. An embedded antenna disposed within the portable radio housing is coupled to the LTE transceiver. An RF signal routing network provided in the portable radio housing is coupled to the LMR transceiver, the LTE transceiver, and an external antenna. A control system controls the RF signal routing network to selectively connect at least one the LMR transceiver or the LTE transceiver to the external antenna in accordance with at least one operating condition.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: October 13, 2015
    Assignee: Harris Corporation
    Inventors: Kenneth Beghini, Donald R. Martz
  • Patent number: 8503934
    Abstract: A communications device includes a first radio (106, 300) configured to support wireless communications with a second radio (104) using a plurality of communications modes. The device includes a switch element (118, 326) configured to cause the first radio to transmit when actuated. The device also includes a control element (306, 324) for detecting one or more actuations of the switch element and configured to select a one of the plurality of communications modes based on a sequence of the actuations of the switch element detected by the control element during a pre-defined time interval and to cause a wireless transmission from the first radio to the second radio according to the one of the plurality of communications modes.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: August 6, 2013
    Assignee: Harris Corporation
    Inventors: Kenneth P. Beghini, Eric Van Ness, Donald R. Martz, David Hinterberger
  • Publication number: 20120021700
    Abstract: A communications device includes a first radio (106, 300) configured to support wireless communications with a second radio (104) using a plurality of communications modes. The device includes a switch element (118, 326) configured to cause the first radio to transmit when actuated. The device also includes a control element (306, 324) for detecting one or more actuations of the switch element and configured to select a one of the plurality of communications modes based on a sequence of the actuations of the switch element detected by the control element during a pre-defined time interval and to cause a wireless transmission from the first radio to the second radio according to the one of the plurality of communications modes.
    Type: Application
    Filed: July 22, 2010
    Publication date: January 26, 2012
    Applicant: HARRIS CORPORATION
    Inventors: Kenneth P. Beghini, Eric Van Ness, Donald R. Martz, David Hinterberger
  • Patent number: 5057791
    Abstract: A bi-directional amplifier having two symmetrical and versatile impedance matching circuits with a JFET therebetween, and a method for bi-directional amplification using a JFET. Each junction of the JFET may be a drain or a source depending on the direction of amplification. Each impedance matching circuit provides a low impedance for the junction that is a source and a high impedance for the junction that is a drain. The impedance is varied by adding a first capacitor parallel to a resonating inductor and a second capacitor, which is removed or inserted in series with the load, responsive to the direction of amplification. The frequency of the signal being amplified may be different for each direction.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: October 15, 1991
    Assignee: Harris Corporation
    Inventors: Mark W. Thompson, Donald R. Martz, George D. Helm
  • Patent number: 4979232
    Abstract: A solid-state switch for coupling an antenna to either a transmitter or a receiver. The switch includes a pair of oppositely poled diodes and a low voltage power supply connected between the diodes for providing a forward biasing voltage to the diodes. Reverse biasing voltage to stop RF current flow through the diodes is provided by the RF signal itself by means of a voltage doubler. The same voltage doubler and a power detector reverse bias the receiver diode during overload conditions.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: December 18, 1990
    Assignee: Harris Corporation
    Inventors: Donald R. Martz, Greg W. Bezjak