Patents by Inventor Reza Esfandiari

Reza Esfandiari 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).

  • High linearity smart HBT power amplifiers for CDMA/WCDMA application
    Patent number: 7212072
    Abstract: A power amplifier includes larger size transistors to provide higher power gain at lower frequencies. Transistors of transistor unit cells include a horseshoe-shaped emitter and a strip-shaped base to increase gain. Transistors are combined at a first level to form transistor arrays, which are combined with bonding wires at a second level to an output micro strip transmission line. A Vbe referenced bias circuit may include a smart function to lower quiescent current.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: May 1, 2007
    Assignee: Dynalinear Technologies, Inc.
    Inventors: Reza Esfandiari, Nam-Min Cho, Alzon B. Canilao, Ron Green, Hyungmo Yoo
  • High linearity smart HBT power amplifiers for CDMA/WCDMA application
    Patent number: 7026876
    Abstract: A power amplifier includes larger size transistors to provide higher power gain at lower frequencies. Transistors of transistor unit cells include a horseshoe-shaped emitter and a strip-shaped base to increase gain. Transistors are combined at a first level to form transistor arrays, which are combined with bonding wires at a second level to an output micro strip transmission line. A Vbe referenced bias circuit may include a smart function to lower quiescent current.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: April 11, 2006
    Assignee: Dynalinear Technologies, Inc.
    Inventors: Reza Esfandiari, Nam-Min Cho, Alzon B. Canilao, Ron Green, Hyungmo Yoo