Patents by Inventor Dennis G. Anson

Dennis G. Anson 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 increasing an output impedance of a transmit amplifier during receive mode of a two-way communication unit
    Patent number: 6122488
    Abstract: A communication unit (200) employs a method and apparatus for increasing an output impedance of a transmit amplifier during a receive mode of the communication unit. The communication unit includes a transmit amplifier, an antenna (209), and a signal receiver (211), and is operable in at least a transmit mode and a receive mode. During the transmit mode, the transmit amplifier, which includes an amplifying device (201), amplifies an input signal (221) and provides the amplified signal (233) to the antenna for transmission. During the receive mode, the antenna receives signals and provides the received signals to the signal receiver. To mitigate the transmit amplifier's effect on the received signals during the receive mode, the communication unit, during the receive mode, couples the transmit amplifier to the antenna and applies a bias (225) to the amplifying device to increase the output impedance (Z.sub.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: September 19, 2000
    Assignee: Motorola, Inc.
    Inventors: Gustavo D. Leizerovich, Dennis G. Anson