Herndon, VA, United States
Herndon, VA, United States

Time filter

Source Type

Patent
LGS Innovations | Date: 2016-11-22

The present application describes a computer-implemented method for configuring a front end including receiving a first signal and a second signal containing interference; characterizing the receive channel using the first tone; processing the compensated first signal using an infinite impulse response filter based on the characterized receive channel to generate an interference cancelling signal; and coupling the interference cancelling signal to the second signal to generate an interference cancelled receive signal. The present application also describes a computer-implemented apparatus for a front end.


A feedthrough assembly includes a main housing, a first inner housing positioned within the main housing and defining a plurality of first inner conduits, a second inner housing positioned within the main housing and defining a plurality of second inner conduits, and a chamber defined by an internal surface of the main housing, a first end of the first inner housing, and a first end of the second inner housing that faces the first end of the first inner housing. Each of the plurality of first inner conduits is aligned with a corresponding one of the plurality of second inner conduits. A cross-sectional area of the chamber varies along a longitudinal axis of the main housing.


The present application is directed to a tunable filter system. The system includes a resonator having an inner wall surrounding a cavity. The resonator includes a MEMS device positioned in the cavity including a substrate, a movable plate and a thermal actuator. The thermal actuator is has a first end coupled to the substrate and a second end coupled to the plate. The actuator moves the plate between a first and a second position in relation to the substrate. The application is also directed to a method for operating the tunable filter.


The present application is directed to a MEMS device. The MEMS device includes a substrate having a first end and a second end extending along a longitudinal axis, the substrate including an electrostatic actuator. The device also includes a movable plate having a first end and a second end. The device also includes a thermal actuator having a first end coupled to the first end of the substrate and a second end coupled to the first end of the plate. The actuator moves the plate in relation to the substrate. Further, the device includes a power source electrically coupled to the thermal actuator and the substrate. The application is also directed to a method for operating a MEMS device.


Patent
LGS Innovations | Date: 2015-12-17

The present application describes a multi wavelength apparatus. The apparatus includes a pump laser, a first seed laser and a second seed laser. Each of the first and second seed lasers had wavelengths longer than the pump laser. The apparatus also includes a first multiplexer. The apparatus also includes first and second controllers configured to respectively control outputs of the first and second seed lasers. The apparatus also includes a first fiber configured to receive an output of a first multiplexer. The apparatus also includes a second multiplexer configured to receive the output of the first fiber. The apparatus also includes a second fiber configured to receive the output of the second combiner. The second fiber can emit light at either the first seed wavelength or the second seed wavelength. The present application is also directed to a method for controlling an output of a laser apparatus.


Patent
LGS Innovations | Date: 2017-04-19

The present application describes systems and methods of performing self-interference cancellation. According to an embodiment, the method sends a transmit signal through a circulator to substantially isolate the transmit signal from a receiver, with at least a portion of the transmit signal entering a receive path towards the receiver. The method also generates a reflected signal from an antenna. The reflected signal is at substantially less power than an incident power to the antenna. The reflected signal includes a transmitter carrier signal and a transmitter noise. The method also routes a received signal from the antenna to the receiver, and routes the reflected signal through a phase shifter in the receive path. Further, the method combines the reflected, phase shifted transmitter noise with the received signal in the receive path to cancel the portion of the transmit signal that entered the receive path towards the receiver.


Patent
Alcatel - Lucent and LGS Innovations | Date: 2015-03-30

A system and method for performing network graph queries on a network graph includes a preprocessing module adapted to generate a data structure from the network graph and to store and dynamically maintain the data structure. The system and method also includes a query module adapted to receive a network query and to generate a query response that answers the network query from the data structure.


Patent
LGS Innovations | Date: 2015-12-29

The present application describes a computer-implemented method for configuring a front end including sweeping a first tone through the frequency band of the receive channel; receiving a first signal and a second signal containing interference; characterizing the receive channel using the first tone; processing the compensated first signal using an infinite impulse response filter based on the characterized receive channel to generate an interference cancelling signal; and coupling the interference cancelling signal to the second signal to generate an interference cancelled receive signal.


Patent
LGS Innovations | Date: 2015-12-29

The present application describes systems and methods of performing self-interference cancellation. Such systems may include generating a transmit signal along a transmit path of a transceiver, where the transmit signal can be sent through a circulator to isolate the transmit signal from a receiver. The transmit signal may be transmitted from an antenna, and a signal may be reflected from the antenna, where the reflected signal may be at less power than an incident power to the antenna, and where the reflected signal may include a transmitter carrier signal and a transmitter noise. A received signal may be routed from the antenna to the receiver, the reflected signal may be routed through a filter and a phase shifter, and the signal may be combined with the received signal in the receive path to cancel the portion of the transmit signal that entered the receive path towards the receiver from the circulator.


Patent
LGS Innovations | Date: 2015-12-29

The present application describes a feed forward method that may electronically cancel self-interference while it is still in the transmit path. It may employ delay length matching for electronic cancellation over large bandwidths.

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