Patents by Inventor Svetlana Radovanov

Svetlana Radovanov 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).

  • Publication number: 20100148088
    Abstract: Techniques for providing a multimode ion source are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for ion implantation, the apparatus including an ion source having a hot cathode and a high frequency plasma generator, wherein the ion source has multiple modes of operation.
    Type: Application
    Filed: February 18, 2010
    Publication date: June 17, 2010
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventors: Svetlana Radovanov, Bon-Woong Koo, Frank Sinclair, Victor M. Benveniste
  • Patent number: 7700925
    Abstract: Techniques for providing a multimode ion source are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for ion implantation, the apparatus including an ion source having a hot cathode and a high frequency plasma generator, wherein the ion source has multiple modes of operation.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: April 20, 2010
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Svetlana Radovanov, Bon Woong Koo, Frank Sinclair, Victor M. Benveniste
  • Publication number: 20090166554
    Abstract: Techniques for providing a multimode ion source are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for ion implantation, the apparatus including an ion source having a hot cathode and a high frequency plasma generator, wherein the ion source has multiple modes of operation.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 2, 2009
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Svetlana Radovanov, Bon Woong Koo, Frank Sinclair, Victor M. Benveniste
  • Publication number: 20090121122
    Abstract: Techniques for measuring and controlling ion beam angle and density uniformity are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for measuring and controlling ion beam angle and density uniformity. The apparatus may include a measuring assembly having an opening, a cup, and at least one collector at the rear of the cup. The apparatus may further include an actuator to move the measuring assembly along an actuation path to scan an ion beam to measure and control ion beam uniformity.
    Type: Application
    Filed: November 13, 2007
    Publication date: May 14, 2009
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Peter L. Kellerman, Kenneth Purser, Svetlana Radovanov, Victor M. Benveniste, Frank Sinclair, John Slocum
  • Publication number: 20090121149
    Abstract: Techniques for shaping an ion beam are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for shaping an ion beam. The apparatus may comprise an entrance electrode biased at a first voltage potential, wherein an ion beam enters the entrance electrode, an exit electrode biased at a second voltage potential, wherein the ion beam exits the exit electrode, and a first suppression electrode and a second suppression electrode positioned between the entrance electrode and the exit electrode, wherein the first suppression electrode and the second suppression electrode are independently biased to variably focus the ion beam.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 14, 2009
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Svetlana Radovanov, Frank Sinclair, Peter L. Kellerman, Victor M. Benveniste, Robert Lindberg
  • Publication number: 20090084987
    Abstract: A plasma processing apparatus includes a process chamber, a source configured to generate a plasma in the process chamber, and a platen configured to support a workpiece in the process chamber. The platen is biased with a pulsed platen signal having pulse ON and OFF time periods to accelerate ions from the plasma towards the workpiece during the pulse ON time periods and not the pulse OFF time periods. A plate is positioned in the process chamber. The plate is biased with a plate signal to accelerate ions from the plasma towards the plate to cause an emission of secondary electrons from the plate during at least a portion of one of the pulse OFF time periods of the pulsed platen signal to at least partially neutralize charge accumulation on the workpiece.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 2, 2009
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventors: Ludovic GODET, Svetlana RADOVANOV, George D. PAPASOULIOTIS, Deven M. RAJ, Vikram SINGH, Timothy J. MILLER, Ziwei FANG
  • Publication number: 20070164229
    Abstract: A technique for providing a segmented electrostatic lens in an ion implanter is disclosed. In one particular exemplary embodiment, the technique may be realized as an electrostatic lens for use in an ion implanter. The lens may comprise an entrance electrode biased at a first voltage potential, wherein an ion beam enters the electrostatic lens through the entrance electrode. The lens may also comprise an exit electrode biased at a second voltage potential, wherein the ion beam exits the electrostatic lens through the exit electrode. The lens may further comprise a suppression electrode located between the entrance electrode and the exit electrode, the suppression electrode comprising a plurality of segments that are independently biased to manipulate an energy and a shape of the ion beam.
    Type: Application
    Filed: April 28, 2006
    Publication date: July 19, 2007
    Inventors: Svetlana Radovanov, Anthony Renau, James Buff
  • Publication number: 20070108390
    Abstract: A technique for shaping a ribbon-shaped ion beam is disclosed. In one particular exemplary embodiment, the technique may be realized as an apparatus for shaping a ribbon-shaped ion beam. The apparatus may comprise an electrostatic lens having a substantially rectangular aperture for a ribbon-shaped ion beam to pass through, wherein a plurality of focusing elements are positioned along short edges of the aperture, and wherein each focusing element is separately biased and oriented to shape the ribbon-shaped ion beam.
    Type: Application
    Filed: September 29, 2006
    Publication date: May 17, 2007
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Svetlana Radovanov, Peter Kellerman, Victor Benveniste, Robert Lindberg, Kenneth Purser, Tyler Rockwell, James Buff, Anthony Renau
  • Patent number: 6998625
    Abstract: An ion implanter includes an ion source for generating an ion beam, an analyzer for separating unwanted components from the ion beam, a first beam transport device for transporting the ion beam through the analyzer at a first transport energy, a first deceleration stage positioned downstream of the analyzer for decelerating the ion beam from the first transport energy to a second transport energy, a beam filter positioned downstream of the first deceleration stage for separating neutral particles from the ion beam, a second beam transport device for transporting the ion beam through the beam filter at the second transport energy, a second deceleration stage positioned downstream of the beam filter for decelerating the ion beam from the second transport energy to a final energy, and a target site for supporting a target for ion implantation. The ion beam is delivered to the target site at the final energy.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: February 14, 2006
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Charles M. McKenna, Nicholas R. White, Douglas A. Brown, Edward Bell, Svetlana Radovanov