Patents by Inventor Suman Kumar Banerjee

Suman Kumar Banerjee 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 frequency signal isolation in a semiconductor device
    Patent number: 6563181
    Abstract: A semiconductor device (20) includes an isolated p-well (22) formed in a substrate (21) by a buried n-well (25) and an n-well ring (24). The n-well ring (24) extends from a surface of the semiconductor device (20) to the buried n-well (25). The isolated p-well (22) includes a plurality of n-well plugs (27) extending from the surface of the semiconductor device (20) into the isolated p-well (22) and contacting the buried n-well (25). The plurality of n-well plugs (27) reduces an n-well resistance to provide better noise isolation for high frequency signals.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: May 13, 2003
    Assignee: Motorola, Inc.
    Inventors: Yang Du, Suman Kumar Banerjee, Rainer Thoma, Alain Duvallet
  • HIGH FREQUENCY SIGNAL ISOLATION IN A SEMICONDUCTOR DEVICE
    Publication number: 20030085432
    Abstract: A semiconductor device (20) includes an isolated p-well (22) formed in a substrate (21) by a buried n-well (25) and an n-well ring (24). The n-well ring (24) extends from a surface of the semiconductor device (20) to the buried n-well (25). The isolated p-well (22) includes a plurality of n-well plugs (27) extending from the surface of the semiconductor device (20) into the isolated p-well (22) and contacting the buried n-well (25). The plurality of n-well plugs (27) reduces an n-well resistance to provide better noise isolation for high frequency signals.
    Type: Application
    Filed: November 2, 2001
    Publication date: May 8, 2003
    Inventors: Yang Du, Suman Kumar Banerjee, Rainer Thoma, Alain Duvallet