Patents by Inventor Nurwati S Devnani

Nurwati S Devnani 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).

  • Patent number: 7855614
    Abstract: Integrated circuit transmission lines are designed to match elements at opposing ends of the transmission line over a frequency range of interest. By modifying characteristics of the transmission line over the length of the transmission line, from a first end coupled to a first external element to a second end coupled to a second external element, return loss is improved. In various embodiments one or more of the width of the conductors and the distance between adjacent edges of the conductors are modified across the length of the transmission line. In an alternative embodiment, the conductors of the transmission line are segmented with each segment having a length and a width across the segment.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: December 21, 2010
    Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Minh Van Quach, Nurwati S. Devnani, Wang Lin, Hyacinth Tok
  • Publication number: 20090284324
    Abstract: Integrated circuit transmission lines are designed to match elements at opposing ends of the transmission line over a frequency range of interest. By modifying characteristics of the transmission line over the length of the transmission line, from a first end coupled to a first external element to a second end coupled to a second external element, return loss is improved. In various embodiments one or more of the width of the conductors and the distance between adjacent edges of the conductors are modified across the length of the transmission line. In an alternative embodiment, the conductors of the transmission line are segmented with each segment having a length and a width across the segment.
    Type: Application
    Filed: May 16, 2008
    Publication date: November 19, 2009
    Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD
    Inventors: Minh Van Quach, Nurwati S. Devnani, Wang Lin, Hyacinth Tok
  • Patent number: 7609125
    Abstract: Systems, devices and methods are disclosed herein for reducing crosstalk between pairs of differential signal conductors. One or more ground traces connected to one or more over- or under-lying ground planes by vias are located between pairs of differential signal conductors. The electrical shielding provided by the combination of the one or more ground traces and the one or more ground planes results in reduced cross-talk between different pairs of differential signal conductors, and facilitates high-speed data rates between integrated circuits and printed circuit boards. In a preferred embodiment, such ground traces and ground planes are employed in HiTCE packaging containing multiple pairs of differential signal conductors.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: October 27, 2009
    Assignee: Avago Technologies Enterprise IP (Singapore) Pte. Ltd.
    Inventors: Minh van Quach, Nurwati S. Devnani, Robert B. Manley
  • Publication number: 20080237893
    Abstract: An apparatus for minimizing parasitic capacitance on a semiconductor die includes a semiconductor die having a least one signal line and at least one plane and an anti pad located between the at least one signal line and the at least one plane.
    Type: Application
    Filed: March 27, 2007
    Publication date: October 2, 2008
    Inventors: Minh Van Quach, Nurwati S. Devnani, Wang Lin, Robert B. Manley, Robert A. Zimmer
  • Publication number: 20080088007
    Abstract: Systems, devices and methods are disclosed herein for reducing crosstalk between pairs of differential signal conductors. One or more ground traces connected to one or more over- or under-lying ground planes by vias are located between pairs of differential signal conductors. The electrical shielding provided by the combination of the one or more ground traces and the one or more ground planes results in reduced cross-talk between different pairs of differential signal conductors, and facilitates high-speed data rates between integrated circuits and printed circuit boards. In a preferred embodiment, such ground traces and ground planes are employed in HiTCE packaging containing multiple pairs of differential signal conductors.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 17, 2008
    Inventors: Minh van Quach, Nurwati S. Devnani, Robert B. Manley
  • Patent number: 7227254
    Abstract: A packaged IC includes an IC die with signal and signal complement traces positioned relative to each other to maximize broadside coupling for a matching impedance. The signal and signal complement traces are electrically connected to transmission or receive channels of the IC die. Use of a broadside coupled trace configuration alleviates routing congestion in an IC package and permits an IC to accommodate a greater number of channels within a given surface area than is possible under the prior art.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: June 5, 2007
    Assignee: Agilent Technologies, Inc.
    Inventors: Nurwati S Devnani, James Oliver Barnes, Charles E Moore, Benny W H Lai
  • Patent number: 7001834
    Abstract: A packaged IC includes an IC die with signal and signal complement traces positioned relative to each other to maximize broadside coupling for a matching impedance. The signal and signal complement traces are electrically connected to transmission or receive channels of the IC die. Use of a broadside coupled trace configuration alleviates routing congestion in an IC package and permits an IC to accommodate a greater number of channels within a given surface area than is possible under the prior art.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: February 21, 2006
    Assignee: Agilent Technologies, Inc.
    Inventors: Nurwati S Devnani, James Oliver Barnes, Charles E Moore, Benny W H Lai
  • Publication number: 20040084768
    Abstract: A packaged IC includes an IC die with signal and signal complement traces positioned relative to each other to maximize broadside coupling for a matching impedance. The signal and signal complement traces are electrically connected to transmission or receive channels of the IC die. Use of a broadside coupled trace configuration alleviates routing congestion in an IC package and permits an IC to accommodate a greater number of channels within a given surface area than is possible under the prior art.
    Type: Application
    Filed: October 22, 2003
    Publication date: May 6, 2004
    Inventors: Nurwati S. Devnani, James Oliver Barnes, Charles E. Moore, Benny W.H. Lai
  • Patent number: 6630628
    Abstract: A high-performance, integrated circuit interconnection laminate. Power/ground layers in laminates fabricated with open areas to permit out gassing of gases generated during high temperature lamination are located such that they do not lie under/over critical traces on signal layers. This placement of the open areas enables a reduction in cross-talk between signal layers lying on opposite sides of a power/ground layer and a reduction in signal delay.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: October 7, 2003
    Assignee: Agilent Technologies, Inc.
    Inventors: Nurwati S Devnani, William S Burton, Sari K Christensen
  • Publication number: 20030183919
    Abstract: A packaged IC includes an IC die with signal and signal complement traces positioned relative to each other to maximize broadside coupling for a matching impedance. The signal and signal complement traces are electrically connected to transmission or receive channels of the IC die. Use of a broadside coupled trace configuration alleviates routing congestion in an IC package and permits an IC to accommodate a greater number of channels within a given surface area than is possible under the prior art.
    Type: Application
    Filed: April 2, 2002
    Publication date: October 2, 2003
    Inventors: Nurwati S. Devnani, James Oliver Barnes, Charles E. Moore, Benny W. H. Lai
  • Publication number: 20030148077
    Abstract: A high-performance, integrated circuit interconnection laminate. Power/ground layers in laminates fabricated with open areas to permit out gassing of gases generated during high temperature lamination are located such that they do not lie under/over critical traces on signal layers. This placement of the open areas enables a reduction in cross-talk between signal layers lying on opposite sides of a power/ground layer and a reduction in signal delay.
    Type: Application
    Filed: February 7, 2002
    Publication date: August 7, 2003
    Inventors: Nurwati S. Devnani, William S. Burton, Sari K. Christensen