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
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
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
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
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.
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
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.
Abstract: Filter design techniques and filters based on metamaterial structures including an extended composite left and right handed (E-CRLH) metamaterial unit cell.
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
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
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
Abstract: Metamaterial antennas provide spatially varying electromagnetic coupling that enables impedance matching conditions for different operating frequencies of the MTM antennas so that such antennas can operate at different frequencies for wideband applications, including ultra wideband applications.
Abstract: Antennas for wireless communications based on metamaterial (MTM) structures to arrange one or more antenna sections of an MTM antenna away from one or more other antenna sections of the same MTM antenna so that the antenna sections of the MTM antenna are spatially distributed in a non-planar configuration to provide a compact structure adapted to fit to an allocated space or volume of a wireless communication device, such as a portable wireless communication device.
Type:
Application
Filed:
May 13, 2009
Publication date:
December 3, 2009
Applicant:
RAYSPAN CORPORATION
Inventors:
Nan Xu, Sunil Kumar Rajgopal, Norberto Lopez, Vaneet Pathak, Ajay Gummalla, Gregory Poilasne, Maha Achour
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
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:
Application
Filed:
March 17, 2008
Publication date:
October 23, 2008
Applicant:
RAYSPAN CORPORATION
Inventors:
Ajay Gummalla, Marin Stoytchev, Maha Achour, Gregory Poilasne
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:
August 24, 2007
Publication date:
February 28, 2008
Applicant:
RAYSPAN CORPORATION
Inventors:
Maha Achour, Ajay Gummalla, Marin Stoytchev