Patents by Inventor Ajay Gummalla

Ajay Gummalla 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: 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
  • 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
  • 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
  • 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
  • Publication number: 20100283705
    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: Application
    Filed: May 21, 2010
    Publication date: November 11, 2010
    Applicant: RAYSPAN CORPORATION
    Inventors: Maha Achour, Ajay Gummalla, Marin Stoytchev, Birkner Franz
  • Publication number: 20100283692
    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: Application
    Filed: May 21, 2010
    Publication date: November 11, 2010
    Applicant: RAYSPAN CORPORATION
    Inventors: Maha Achour, Ajay Gummalla, Marin Stoytchev, Franz Birkner
  • Publication number: 20100238081
    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: Application
    Filed: September 17, 2009
    Publication date: September 23, 2010
    Inventors: Maha Achour, Ajay Gummalla, Marin Stoytchev
  • Publication number: 20100231470
    Abstract: This application relates to slot antenna devices based on Composite Right and Left Handed (CRLH) metamaterial (MTM) structures.
    Type: Application
    Filed: March 12, 2010
    Publication date: September 16, 2010
    Applicant: RAYSPAN CORPORATION
    Inventors: Cheng-Jung Lee, Ajay Gummalla, Maha Achour
  • Publication number: 20100207703
    Abstract: Power amplifying systems and modules and components therein are designed based on CRLH structures, providing high efficiency and linearity.
    Type: Application
    Filed: February 18, 2010
    Publication date: August 19, 2010
    Applicant: RAYSPAN CORPORATION
    Inventors: Alexandre Dupuy, Ajay Gummalla, Maha Achour
  • 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
  • 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
  • Publication number: 20100171563
    Abstract: Techniques, apparatus and systems for a multiple pole multiple throw (MPMT) RF switch device based on composite left and right handed (CRLH) metamaterial structures.
    Type: Application
    Filed: December 16, 2009
    Publication date: July 8, 2010
    Applicant: RAYSPAN CORPORATION
    Inventors: Alexandre Dupuy, Vladimir Penev, Vaneet Pathak, Ajay Gummalla
  • Publication number: 20100157858
    Abstract: Architectures and implementations of a transceiver system for wireless communications are presented, the system including one or more antennas supporting a single frequency band or multiple frequency bands, a transmit circuit, a receive circuit, and an isolation circuit that is coupled to the one or more antennas and the transmit and receive circuits and provides adequate isolation between the transmit circuit and the receive circuit.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 24, 2010
    Applicant: RAYSPAN CORPORATION
    Inventors: Cheng-Jung Lee, Woo Yong Lee, Ajay Gummalla, Nhan Duc Nguyen, Vladimir Penev, Maha Achour, Gregory Poilasne
  • Publication number: 20100123635
    Abstract: Apparatus and techniques that provide tuning elements in antenna devices to tune frequencies of the antenna devices, including composite right and left handed (CRLH) metamaterial (MTM) antenna devices. Examples of the tuning elements for CRLH MTM antenna devices include feed line tuning elements, cell patch tuning elements, meandered stub tuning elements, via line tuning elements, and via pad tuning elements tuning elements that formed near corresponding antenna elements such as the feed line, cell patch, meander stub, via line and via pad, respectively.
    Type: Application
    Filed: November 16, 2009
    Publication date: May 20, 2010
    Applicant: RAYSPAN CORPORATION
    Inventors: Norberto Lopez, Ajay Gummalla
  • 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
  • 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
  • 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
  • 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
  • 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
  • Publication number: 20100073254
    Abstract: Techniques and devices based on antenna structures with a MTM loading element.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 25, 2010
    Applicant: RAYSPAN CORPORATION
    Inventors: Cheng-Jung Lee, Ajay Gummalla, Maha Achour