Patents by Inventor Liby Boreysha

Liby Boreysha 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).

  • Multi-port cross-connected multi-level cascode differential amplifier
    Patent number: 7161429
    Abstract: A differential cascode amplifier has first and second cascode circuits, driven by two differential signal sources including input resistances. The first cascode circuit includes a first input transistor having a first collector, a first emitter, and a first base, and a first output transistor having a second collector, a second base, and a second emitter coupled to the first collector. The second cascode circuit includes a second input transistor having a third collector, a third emitter, and a third base, and a second output transistor having a fourth collector, a fourth base, and a fourth emitter coupled to the third collector. The amplifier has a first connection connecting the first base to the fourth base, and a second connection connecting the second base to the third base. This cross-connected differential cascode architecture provides doubled output bandwidth and current gain (in dB), further increasing input impedance and output swing.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: January 9, 2007
    Assignee: International Business Machines Corporation
    Inventors: Liby Boreysha, Yuri Bruck, Gennady Burdo, Michael Zelikson
  • Multi-port cross-connected multi-level cascode differential amplifier
    Publication number: 20050134379
    Abstract: A differential cascode amplifier has first and second cascode circuits, driven by two differential signal sources including input resistances. The first cascode circuit includes a first input transistor having a first collector, a first emitter, and a first base, and a first output transistor having a second collector, a second base, and a second emitter coupled to the first collector. The second cascode circuit includes a second input transistor having a third collector, a third emitter, and a third base, and a second output transistor having a fourth collector, a fourth base, and a fourth emitter coupled to the third collector. The amplifier has a first connection connecting the first base to the fourth base, and a second connection connecting the second base to the third base. This cross-connected differential cascode architecture provides doubled output bandwidth and current gain (in dB), further increasing input impedance and output swing.
    Type: Application
    Filed: December 18, 2003
    Publication date: June 23, 2005
    Applicant: International Business Machines Corporation
    Inventors: Liby Boreysha, Yuri Bruck, Gennady Burdo, Michael Zelikson