Patents Assigned to Rayspan Corporation
  • Filter design methods and filters based on metamaterial structures
    Patent number: 8237519
    Abstract: Filter design techniques and filters based on metamaterial structures including an extended composite left and right handed (E-CRLH) metamaterial unit cell.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: August 7, 2012
    Assignee: Rayspan Corporation
    Inventor: Maha Achour
  • ANTENNA DEVICES HAVING FREQUENCY-DEPENDENT CONNECTION TO ELECTRICAL GROUND
    Publication number: 20110156963
    Abstract: Antenna devices and techniques that provide specific control of the spatial distributions of DC and RF signals at various positions in a wireless apparatus are disclosed. The wireless apparatus includes various device components each having specifications for achieving desired operations in antenna devices.
    Type: Application
    Filed: December 30, 2009
    Publication date: June 30, 2011
    Applicant: Rayspan Corporation
    Inventors: Sunil Rajgopal, Cheng-Jung Lee, Ajay Gummalla
  • PRINTED MULTILAYER FILTER METHODS AND DESIGNS USING EXTENDED CRLH (E-CRLH)
    Publication number: 20110050364
    Abstract: Printed multilayer filter design techniques and filters based on metamaterial structures including an extended composite left and right handed (E-CRLH) metamaterial unit cell.
    Type: Application
    Filed: August 25, 2009
    Publication date: March 3, 2011
    Applicant: Rayspan Corporation
    Inventor: Maha Achour
  • Metamaterial antenna arrays with radiation pattern shaping and beam switching
    Patent number: 7855696
    Abstract: Apparatus, systems and techniques for using composite left and right handed (CRLH) metamaterial (MTM) structure antenna elements and arrays to provide radiation pattern shaping and beam switching.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: December 21, 2010
    Assignee: Rayspan Corporation
    Inventors: Ajay Gummalla, Marin Stoytchev, Maha Achour, Gregory Poilasne
  • Antennas based on metamaterial structures
    Patent number: 7847739
    Abstract: Techniques, apparatus and systems that use one or more composite left and right handed (CRLH) metamaterial structures in processing and handling electromagnetic wave signals. Antennas and antenna arrays based on enhanced CRLH metamaterial structures are configured to provide broadband resonances for various multi-band wireless communications.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: December 7, 2010
    Assignee: Rayspan Corporation
    Inventors: Maha Achour, Ajay Gummalla, Marin Stoytchev
  • RF power amplifiers with linearization
    Patent number: 7839216
    Abstract: Designs and techniques associated with power amplifiers for amplifying RF signals to provide variable power amplification and improved linearity in various RF amplification circuits, including power amplifiers operated under the power back-off conditions.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: November 23, 2010
    Assignee: Rayspan Corporation
    Inventors: Raul Alidio, Alexandre Dupuy, Ajay Gummalla, Woo Yong Lee, Maha Achour
  • Power combiners and dividers based on composite right and left handed metamaterial structures
    Patent number: 7839236
    Abstract: Techniques, apparatus and systems that use composite left and right handed (CRLH) metamaterial structures to combine and divide electromagnetic signals at multiple frequencies. The metamaterial properties permit significant size reduction over a conventional N-way radial power combiner or divider. Dual-band serial power combiners and dividers and single-band and dual-band radial power combiners and dividers are described.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: November 23, 2010
    Assignee: Rayspan Corporation
    Inventors: Alexandre Dupuy, Ajay Gummalla, Maha Achour
  • Balanced Metamaterial Antenna Device
    Publication number: 20100225554
    Abstract: This document describes designs and techniques for directly feeding an unbalanced transmission line with a balanced antenna using Composite Right and Left Handed (CRLH) and balun structures.
    Type: Application
    Filed: March 3, 2010
    Publication date: September 9, 2010
    Applicant: Rayspan Corporation
    Inventors: Wei Huang, Vladimir Penev, Vaneet Pathak, Gregory Poilasne
  • Antennas, devices and systems based on metamaterial structures
    Patent number: 7764232
    Abstract: Techniques, apparatus and systems that use one or more composite left and right handed (CRLH) metamaterial structures in processing and handling electromagnetic wave signals. Antenna, antenna arrays and other RF devices can be formed based on CRLH metamaterial structures. The described CRLH metamaterial structures can be used in wireless communication RF front-end and antenna sub-systems.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: July 27, 2010
    Assignee: Rayspan Corporation
    Inventors: Maha Achour, Ajay Gummalla, Marin Stoytchev, Franz Birkner
  • POWER AMPLIFIER ARCHITECTURES
    Publication number: 20100176880
    Abstract: Implementations and examples of power amplifier devices, systems and techniques for amplifying RF signals, including power amplifier systems based on Composite Right and Left Handed (CRLH) metamaterial (MTM) structures.
    Type: Application
    Filed: May 28, 2009
    Publication date: July 15, 2010
    Applicant: Rayspan Corporation
    Inventors: Alexandre Dupuy, Raul Alidio, Ajay Gummalla, Maha Achour, Cheng-Jung Lee, Can Zheng
  • MULTI-METAMATERIAL-ANTENNA SYSTEMS WITH DIRECTIONAL COUPLERS
    Publication number: 20100117908
    Abstract: Examples of apparatus and techniques for providing metamaterial (MTM) multi-antenna array systems with directional couplers for various applications.
    Type: Application
    Filed: December 20, 2008
    Publication date: May 13, 2010
    Applicant: Rayspan Corporation
    Inventors: Cheng-Jung Lee, Ajay Gummalla, Maha Achour, Vaneet Pathak
  • ADVANCED ACTIVE METAMATERIAL ANTENNA SYSTEMS
    Publication number: 20100110943
    Abstract: Techniques, antenna systems and apparatus based on composite right and left handed (CRLH) metamaterial (MTM) structures to couple CRLH MTM circuits to transistors to amplify signals in wireless RF receivers and transmitters.
    Type: Application
    Filed: March 9, 2009
    Publication date: May 6, 2010
    Applicant: Rayspan Corporation
    Inventors: Ajay Gummalla, Cheng-Jung Lee, Alexandre Dupuy, Maha Achour
  • FILTER DESIGN METHODS AND FILTERS BASED ON METAMATERIAL STRUCTURES
    Publication number: 20100109805
    Abstract: Filter design techniques and filters based on metamaterial structures including an extended composite left and right handed (E-CRLH) metamaterial unit cell.
    Type: Application
    Filed: November 17, 2008
    Publication date: May 6, 2010
    Applicant: Rayspan Corporation
    Inventor: Maha Achour
  • POWER COMBINERS AND DIVIDERS BASED ON COMPOSITE RIGHT AND LEFT HANDED METAMATERIAL STRUCTURES
    Publication number: 20100109803
    Abstract: Techniques, apparatus and systems that use composite left and right handed (CRLH) metamaterial structures to combine and divide electromagnetic signals at multiple frequencies. The metamaterial properties permit significant size reduction over a conventional N-way radial power combiner or divider. Dual-band serial power combiners and dividers and single-band and dual-band radial power combiners and dividers are described.
    Type: Application
    Filed: December 21, 2007
    Publication date: May 6, 2010
    Applicant: Rayspan Corporation
    Inventors: Alexandre Dupuy, Ajay Gummalla, Maha Achour
  • METAMATERIAL STRUCTURES WITH MULTILAYER METALLIZATION AND VIA
    Publication number: 20100109971
    Abstract: Techniques and apparatus based on metamaterial structures are provided for antenna and transmission line devices, including multilayer metallization metamaterial structures with one or more conductive vias connecting conductive parts in two different metallization layers.
    Type: Application
    Filed: November 13, 2008
    Publication date: May 6, 2010
    Applicant: Rayspan Corporation
    Inventors: Ajay Gummalla, Maha Achour, Norberto Lopez, Shane Thornwall, Nhan Nguyen, Gregory Poilasne
  • SINGLE-FEED MULTI-CELL METAMATERIAL ANTENNA DEVICES
    Publication number: 20100109972
    Abstract: Designs and techniques of Composite Right-Left Handed (CRLH) Metamaterial (MTM) antenna devices, including a CRLH MTM devices that include MTM cells formed on a substrate and a conductive launch stub formed on the substrate to be adjacent to each of the MTM cells and electromagnetically coupled to each of the MTM cells.
    Type: Application
    Filed: March 20, 2009
    Publication date: May 6, 2010
    Applicant: Rayspan Corporation
    Inventors: Nan Xu, Norberto Lopez, Vaneet Pathak, Ajay Gummalla
  • Antennas based on metamaterial structures
    Patent number: 7592957
    Abstract: Techniques, apparatus and systems that use one or more composite left and right handed (CRLH) metamaterial structures in processing and handling electromagnetic wave signals. Antennas and antenna arrays based on enhanced CRLH metamaterial structures are configured to provide broadband resonances for various multi-band wireless communications.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: September 22, 2009
    Assignee: Rayspan Corporation
    Inventors: Maha Achour, Ajay Gummalla, Marin Stoytchev