Assignee: Viasat, Inc.

Location: Carlsbad, CA
No. of patents: 144

Number	Title	Issue Date
8184756	Symbol timing acquisition using early-late interpolation Symbol timing acquisition is described for a wireless broadband signal received at a user terminal from a gateway via a satellite. In-phase and quadrature channels of the wireless signal may each be sampled at a rate of one sample per symbol. The samples may be inte...	05/22/2012
8183929	Multi-chip doherty amplifier with integrated power detection In accordance with an exemplary embodiment of the present invention, a Doherty amplifier is provided for applications in radio frequency, microwave, and other electronic systems. An exemplary Doherty amplifier comprises a first MMIC having a first power detector, an...	05/22/2012
8176141	SMB request prefetching Systems and methods are described for accelerating a user experience involving transactions with a remote file server by identifying and prefetching simple message block (SMB) requests. Embodiments exploit applications' usage of certain SMB request offset value patt...	05/08/2012
8175237	Audio interface An audio interface includes interface circuitry configured to translate audio signals received from a military handset to audio signals compatible with a plain old telephone system (POTS) network. The interface circuitry presents a 6-pin (or 5-pin) audio port config...	05/08/2012
8171135	Accumulator for prefetch abort The present invention relates to systems, apparatus, and methods of determining whether to abort a prefetch operation. Embodiments include accumulator functionality for accumulating object data prior to making an abort determination. Certain embodiments compress the...	05/01/2012
8170158	Digital cross-polar interference cancellation Cross-polar interference cancellation in a dual-polarization system is described. A terminal in a satellite communication system may receive a first communication signal in a first polarization and a second communication signal in a second polarization substantially...	05/01/2012
8169264	Distributed Doherty amplifiers Doherty and distributed amplifier (DA) designs are combined to achieve, wideband amplifiers with high efficiency dynamic range. A modified Doherty amplifier includes a wideband phase shifter providing first and second outputs, a main amplifier coupled to the first o...	05/01/2012
8166289	Trusted boot In one embodiment, a method for trusted booting of a cryptographic processor system is disclosed. Default image(s) is loaded into a field-programmable logic chip or circuit (FPLC). The default image(s) cannot perform cryptographic processing, but can perform a first...	04/24/2012
8165540	Systems, methods and devices for dual closed loop modulation controller for nonlinear RF amplifier In accordance with various exemplary embodiments of the present invention, systems, methods and devices are configured to facilitate RF envelope amplitude control. For example, a RF envelope amplitude control system comprises: a RF amplifier, wherein the RF amplifie...	04/24/2012
8165296	Time of day encryption using TDMA timing Embodiments of the invention provide for encryption and decryption of data in a TDMA network using TDMA time values. In some embodiments, TDMA time values can be transmitted to terminals from a network controller using a burst time plan. These TDMA time values along...	04/24/2012
8160530	Multi-beam active phased array architecture In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signal...	04/17/2012
8160507	Transceiver single cable protocol system and method A single-cable protocol and associated methods and systems enable improved communication efficiency and/or reduced cost. Transmit information, receive information, telemetry information, and/or DC power may be multiplexed onto a single cable, eliminating the need fo...	04/17/2012
8159994	High data rate multiplexing satellite stream to low data rate subscriber terminals A satellite modem for broadband communication. The satellite modem receives a satellite signal on a single carrier from a satellite. The satellite signal is divided by time division multiplexing into physical sub-channels encapsulating logical downstreams. The satel...	04/17/2012
8159992	Routing paths onboard satellite with reference terminal functionality Satellite communications systems, methods, and related devices are described. A satellite communications system may include routing and switching functionality onboard the satellite. Such a system may include a satellite in communication with terminals (e.g., subscr...	04/17/2012
8159964	Distribution of routing tables for satellite with reference terminal functionality Satellite communications systems, methods, and related devices are described. A satellite communications system may include routing and switching functionality onboard the satellite. Such a system may include a satellite in communication with terminals (e.g., subscr...	04/17/2012
8156321	Overlapping state areas for programmable crypto processing circuits In one embodiment, a method for operating a field-programmable logic chip or circuit (FPLC) is disclosed. Operation of the FPLC includes a configuration state and a cryptographic processing state. Switching between states is controlled by a state machine. Each state...	04/10/2012
8144680	Contention-based communications Methods and apparatus are presented for conducting communications using a shared communication medium. A message is sent over the shared communication medium. The shared communication medium is organized to include an allocation of node identification signal space a...	03/27/2012
8144643	Flexible capacity satellite communications system with flexible allocation between forward and return capacity Systems and methods for supporting more flexible coverage areas and spatial capacity assignments using satellite communications systems are disclosed. Antenna elements are arranged in one or more phased arrays. The phased arrays may be used to receive uplink communi...	03/27/2012
8140005	Modular satellite transceiver A modular satellite transceiver is provided according to some embodiments of the disclosure. The modular transceiver may include an RF module and a back end module. The RF module may operate in a first band, and may include, for example, one or more antennas, an RF ...	03/20/2012
8139370	Electronic system having field effect transistors and interconnect bumps on a semiconductor substrate A method and system for a FET cell is presented. The FET cell includes multiple individual transistors and interconnect bumps that are configured to flip-chip connect to a substrate. The substrate may have the majority of a matching structure for the FET cell. Furth...	03/20/2012
8130693	MIMO satellite system A satellite communication system is disclosed that utilizes multiple antenna for subscriber terminals to process streams. A first node relays a first stream between the ground station and the subscriber terminals. A second node relays the second lower information ra...	03/06/2012
8120537	Inclined antenna systems and methods In accordance with various aspects of the present invention, a method and system for designing an inclined antenna array with a hybrid mechanical-electronic steering system with improved radiation performances at low elevation angles is presented. In an exemplary em...	02/21/2012
8116359	Single oscillator transceiver A frequency plan is provided for particular use in a transceiver. Advantageously, a single oscillator may be used to generate desired frequency signals. One or more power splitters receive the signal and equally divide the signal into first and second signals having...	02/14/2012
8116358	Single oscillator transceiver A frequency plan is provided for particular use in a transceiver. Advantageously, a single oscillator may be used to generate desired frequency signals. One or more power splitters receive the signal and equally divide the signal into first and second signals having...	02/14/2012
8107875	Placement of gateways near service beams A method and system are presented for operating a multibeam satellite system involving positioning a plurality of service beams associated with a plurality of service beam coverage areas and positioning a feeder beam associated with a feeder beam coverage area. The ...	01/31/2012
8107410	Map-triggered dump of packets in satellite communication system Upstream information arriving through a user terminal in a satellite link is efficiently scheduled through a modified Demand Assigned Multiple Access (DAMA) algorithm such that data packets arriving at the user terminal are concatenated to form a larger frame for tr...	01/31/2012
8107368	Large packet concatenation in satellite communication system Upstream information arriving through a gateway from a user terminal in a satellite link subject to propagation delay is efficiently scheduled through a modified Demand Assigned Multiple Access (DAMA) algorithm such that arriving data packets arriving at the softwar...	01/31/2012
8085209	Sub-array polarization control using rotated dual polarized radiating elements A system and method of minimizing a polarization quantization error associated with an antenna sub-array. The antenna sub-array includes at least two radiating elements, with the radiating elements having different polarization orientations from other radiating elem...	12/27/2011
8077652	MF-TDMA frequency hopping Systems, methods, and devices are described for scheduling and mapping upstream communications in a satellite communications system. The disclosure includes various channelization and frequency hopping techniques. A gateway is described to perform novel allocation o...	12/13/2011
8077651	Packet reformatting for downstream links Systems, devices, and methods are described for formatting packets for downstream satellite links. The generation of a broadband wireless signal is described, the signal to be transmitted between a gateway and subscriber terminals via satellite. Respective data link...	12/13/2011
8077629	Estimating pointing loss for user terminals of a satellite communications system Techniques are provided herein for monitoring the performance of a satellite communications system, including techniques for determining the pointing loss of a plurality of user terminals in the satellite communications system using the isotropic radiated power (EIR...	12/13/2011
8072873	Adaptive coding and modulation using linked list data structures A process is described to build physical layer frames with a modcode adapted to the signal quality of a destination terminal. Data packets assigned to the same modcode may be sent in the same frame, although packets associated with higher modcodes may be used to com...	12/06/2011
8072065	System and method for integrated waveguide packaging A millimeter wave system or package may include at least one printed wiring board (PWB), at least one integrated waveguide interface, and at least one monolithic microwave integrated circuit (MMIC). The package may be assembled in panel form incorporating parallel m...	12/06/2011
8068827	Non-interfering utilization of non-geostationary satellite frequency band for geostationary satellite communication A method, satellite and system utilizes non-geostationary satellite orbit (NGSO) frequency spectrum in geostationary satellite orbit (GSO) satellite communication in a non-interfering manner. A ground station transmits signals to a GSO satellite using a GSO frequenc...	11/29/2011
8068435	Rate adaptive modem A communication system transmitting signals over a network using a transmission waveform in which a plurality of data packets are transmitted in a payload field of a transmission frame, the system includes a transmitter, which has a transmitting portion that sends i...	11/29/2011
8054233	Roller based antenna positioner According to the invention, a system for positioning an antenna is disclosed. The system may include an antenna, a first substantially circular track, a base, and a first plurality of rollers. The first substantially circular track may be coupled with the antenna. E...	11/08/2011
8051192	Methods and systems for presentation layer redirection for network optimization The present invention relates to systems, apparatus, and methods of intercepting commands at an application presentation layer. The method includes intercepting, at a proxy client, a command issued by an application to a network resource before the command is conver...	11/01/2011
8044845	Highly integrated circuit architecture Various techniques may be implemented to isolate a receive signal from a transmit signal in an antenna. Signal isolation is desirable because it prevents interference of the signals with one another and minimizes signal noise, which reduces the signal quality. Some ...	10/25/2011
8035203	Radio frequency over-molded leadframe package An over-molded leadframe (e.g., a Quad Flat No-lead (QFN)) package capable of operating at frequencies in the range of about five gigahertz (GHz) to about 300 GHz and a method of making the over-molded leadframe package are disclosed. The over-molded leadframe packa...	10/11/2011
8031711	Assignment modes for a shared communication medium Methods and apparatuses are presented for conducting communications over a shared communication medium involving (a) sending a request from a first node, the shared communication medium organized to include (i) a request signal space including a plurality of request...	10/04/2011

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Assignee: Viasat, Inc.