Patents by Inventor Mark D. Randol

Mark D. Randol 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).

  • Radio frequency electronic switch
    Patent number: 6487395
    Abstract: A radio frequency (RF) switch (40) for use in a wireless communication system operated in a time delay division mode of operation. The switch includes a pair of PIN diodes (54 and 56) serially coupled between the transmitter and receiver paths of the communication system which share a common node (58) to which a bias voltage is provided. The bias voltage is switched between first and second voltage levels to alternately cause one and the other of the pin diodes to be forward biased while the other is reversed bias. In this manner the transmitter and receiver paths will be alternately shorted to alternating current ground while the other path is shorted to a common node to an antenna.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: November 26, 2002
    Assignee: Motorola, Inc.
    Inventors: Jeffrey C. Durec, David Kevin Lovelace, Mark D. Randol