Vadum, Inc.

Aviat U.s., Inc.

Harris Stratex Networks, Inc.

Harris Stratex Networks Operating Corporation

Todd Nichols

Ying Shen

Thanh H Nguyen

James Laudolff

Jesse Hart Shaver

David Schafer

Travis Mashburn

Gregory T Brauns

Aaron Lael Walker

Jennings Gary Edge

Michael Joseph Trapani

Shaun M Gidcumb

Thomas Ketterl

Eric Phillips

A magnetic resonance detection (MRD) system for and methods of detecting and classifying multiple chemical substances is disclosed. In one example, the presently disclosed MRD system is a nuclear quadrupole resonance (NQR) detection system that provides multi-frequency operation for substantially full coverage of the explosive NQR spectrum using a broadband transmit/receive (T/R) switch (or duplexer) and a single multi-frequency radio frequency (RF) transducer. More particularly, the MRD system provides a frequency-agile system that can operate over a wide band of frequencies or wavelengths. Further, a method of detecting and classifying various chemical substances is provided that includes pulse sequencing with 'frequency hopping,' phase cycling for reducing or substantially eliminating background noise, and/or a process of mitigating amplitude modulation (AM) radio interference.

Magnetic resonance detection (MRD) system for and methods of detecting and classifying multiple chemical substances

A photonic implementation of the modulated wideband converter (MWC) is described. The highly scalable compressive sensing receiver architecture uses photonic components for analog front-end compression and downconversion, allowing scalable data conversion over an extremely wide instantaneous surveillance bandwidth, limited only by the peak anticipated signal occupancy and application-dependent size, weight, and power constraints.

Photonic compressive sensing receiver

A method and apparatus for firing a plurality of disrupter loads in arbitrary order at the discretion of the user is disclosed. The loads may be of the same or different types. Both liquid and solid projectiles may be fired. Further, the disrupter may be operated by a user at safe standoff distance from a robotic mount with the aid of control, targeting, ranging and recoil systems.

Multi-shot disrupter apparatus and firing method

A radio frequency transmitter comprising a modem which receives one or more input data signals and an adaptive predistortion signal and provides a baseband in-phase signal and a baseband quadrature signal. The transmitter may comprise a power amplifier module which receives the in-phase and quadrature phase signals and provides a radio frequency output signal. A predistortion module receives the radio frequency signal, downconverts the radio frequency signal to an intermediate frequency signal, and downconverts the intermediate frequency signal to a baseband feedback signal. The transmitter samples the feedback signal and provides an adaptive predistortion signal to the modem.

Compact wide dynamic range transmitter for point to point radio

An adjustable low pass filter and directional coupler used in microwave communication are combined to reduce the size of the microwave circuit. The low pass filter portion and coupling portion are made independently tunable with a plurality of varactors and variable reactance circuits connected to ground.

Independently adjustable combined harmonic rejection filter and power sampler

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Cary, NC, United States of America

Todd Nichols