Abstract: 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.

Abstract: The present application describes a method for characterizing a self-interference channel of a frequency division duplex transceiver including a transmitter and a receiver. The method includes transmitting, from a transmitter of a frequency division duplex transceiver in a transmission band, a transmission signal including a message signal and a swept tone that changes frequency from below an upper edge to above a lower edge of a reception band of a receiver, the self-interference channel being defined between the transmitter and the receiver of the frequency division duplex transceiver, such that at least a portion of the message signal leaks into a signal received the receiver, determining, at an infinite impulse response (IIR) filter of the receiver, an infinite impulse response of the self-interference channel based upon a reception of the swept tone swept at each frequency in the reception band, and estimating the self-interference channel, based upon the infinite impulse response.

Abstract: The present application a digital self-interference residual cancellation method that adjusts a magnitude of a sampled transmit signal based on compared magnitude and phases associated with tones. The digital self-interference residual cancellation method may follow an analog carrier cancellation stage where the digital self-interference residual cancellation is based on a determination of the channel circuit response used to control an infinite impulse response filter which can compensate using both poles and zeroes.

Abstract: The present application describes a computer-implemented method for frequency hopping including configuring a radio front end to operate on a first frequency; receiving a transmit signal in a first path in the radio front end; amplifying a transmit signal in the first path; phase shifting the transmit signal in a second path in the radio front end, the second path being different from the first path; coupling the amplified transmit signal to a third path in the radio front end; coupling the phase-shifted transmit signal in the second path to the amplified transmit signal in the third path to form a carrier-cancelled signal in a fourth path in the radio front end in the radio front end; phase shifting the carrier-cancelled signal in the fourth path; coupling the phase-shifted carrier-cancelled signal in the fourth path to the amplified transmit

Abstract: The present application describes a method for in-phase and quadrature phase (IQ) compensation in a frequency division duplex transceiver including a transmitter and a receiver is provided. The method includes transmitting, from a transmitter, a transmission signal including a message signal and a fixed tone at a frequency outside a reception band of the receiver, receiving, at the receiver, a reception signal including a portion of the transmission signal having the fixed tone and the message signal, determining, at a processor of the receiver, a gain mismatch (g) and a phase mismatch (?) between an in-phase (I) component and a quadrature (Q) phase component of the reception signal by detecting an image tone of the fixed tone in the reception signal, and minimizing, at the processor, the image tone to compensate the gain mismatch and the phase mismatch between the I and Q components of the reception signal.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: In accordance with one embodiment of the present invention, the improved secondary navigation station of the invention comprises a horizontal surface which is suspended above the watercraft by a structural system usually comprised of aluminum tubing or equivalent, which horizontal surface may further comprise a navigation station, a seat structure, and a horizontally sliding cover, which, when it is closed position, operates in concert with said horizontal surface to create a solid weatherproof surface, but when open, allows the user or operator of the watercraft to mount a series of steps such that the user or operator of the watercraft is able to navigate the craft from an elevated position from a standing, leaning, or sitting position. The invention allows for an elevated navigation station and elevated positioning for sighting use for fishing and navigation while maintaining a low center of gravity of the watercraft.

Abstract: Disclosed are various embodiments of a studio arrangement and a method of capturing images and/or video. One embodiment of the disclosure includes a key light source aimed at a subject, and an image capture position that includes an image capture device aimed at the subject. The subject is placed on an elevated platform. The background behind the elevated platform is a reflective material. The studio arrangement achieves a desired effect of a white background where a rear edge of the elevated platform is imperceptible to the image capture device positioned at the image capture position.

Abstract: In accordance with one embodiment of the present invention, the improved secondary navigation station of the invention comprises a horizontal surface which is suspended above the watercraft by a structural system usually comprised of aluminum tubing or equivalent, which horizontal surface may further comprise a navigation station, a seat structure, and a horizontally sliding cover, which, when it is closed position, operates in concert with said horizontal surface to create a solid weatherproof surface, but when open, allows the user or operator of the watercraft to mount a series of steps such that the user or operator of the watercraft is able to navigate the craft from an elevated position from a standing, leaning, or sitting position. The invention allows for an elevated navigation station and elevated positioning for sighting use for fishing and navigation while maintaining a low center of gravity of the watercraft.

Abstract: Drug affinity responsive target stability (DARTS) is a method of drug target ID with several significant advantages over current techniques. In certain embodiments the method involves contacting a sample comprising one or more protein target(s) with a test agent to form a sample/test agent mixture; contacting the mixture with a protease; and identifying a protein or protein fragment that is protected from proteolysis, wherein the protection from proteolysis is an indicator that the protein or protein fragment binds to or interacts with the test agent.

Abstract: The present invention utilizes a series of uniquely timed gears and flywheel(s) to convert a linear motion into a rotary motion or a rotary motion into a linear motion. The movement of the drive component (linear or rotary) results in an exact mathematical movement of the driven component (rotary or linear), divided by or multiplied by its gear ratio and can be measured at any point of the stroke or angle of rotation. The present invention achieves and maintains the mathematically and mechanically optimum 90 degree relationship between the linear and rotary components through the entire linear stroke and rotary motion, thereby eliminating the inefficient geometric constraints of a variable vector, crankshaft based motion conversion mechanism.

Abstract: A drive gear assembly is disclosed. The assembly includes a drive shaft (11) and a drive gear (9) mounted on or integral with a drive shaft and rotatable therewith and being adapted to mesh with a driven gear (7). The assembly also includes a self-aligning assembly that supports the drive shaft for rotation about an axis of the drive shaft and so that the drive gear can self-align with respect to the driven gear.

Abstract: Drug affinity responsive target stability (DARTS) is a novel method of drug target ID with several significant advantages over current techniques. In certain embodiments the method involves contacting a sample comprising one or more protein target(s) with a test agent to form a sample/test agent mixture; contacting the mixture with a protease; and identifying a protein or protein fragment that is protected from proteolysis, wherein the protection from proteolysis is an indicator that the protein or protein fragment binds to or interacts with the test agent.

Abstract: Techniques for accurate position location and tracking suitable for a wide range of facilities in variable environments are disclosed. In one aspect, a system for position location comprises a plurality of sensors (e.g. a network monitor, an environment sensor) for generating measurements of a plurality of sources, a plurality of objects or tags, each object generating measurements of the plurality of sources, and a processor for receiving the measurements and generating a position location for one or more objects in accordance with the received measurements. In another aspect, a position engine comprises a mapped space of a physical environment, and a processor for updating the mapped space in response to received measurements. The position engine may receive second measurements from an object within the physical environment, and generate a position location estimate for the object from the received second measurements and the mapped space.

Abstract: Techniques for accurate position location and tracking suitable for a wide range of facilities in variable environments are disclosed. In one aspect, a system for position location comprises a plurality of sensors (e.g. a network monitor, an environment sensor) for generating measurements of a plurality of sources, a plurality of objects or tags, each object generating measurements of the plurality of sources, and a processor for receiving the measurements and generating a position location for one or more objects in accordance with the received measurements. In another aspect, a position engine comprises a mapped space of a physical environment, and a processor for updating the mapped space in response to received measurements. The position engine may receive second measurements from an object within the physical environment, and generate a position location estimate for the object from the received second measurements and the mapped space.

Abstract: Techniques for accurate position location and tracking suitable for a wide range of facilities in variable environments are disclosed. In one aspect, a system for position location comprises a plurality of sensors (e.g. a network monitor, an environment sensor) for generating measurements of a plurality of sources, a plurality of objects or tags, each object generating measurements of the plurality of sources, and a processor for receiving the measurements and generating a position location for one or more objects in accordance with the received measurements. In another aspect, a position engine comprises a mapped space of a physical environment, and a processor for updating the mapped space in response to received measurements. The position engine may receive second measurements from an object within the physical environment, and generate a position location estimate for the object from the received second measurements and the mapped space.