Raytheon Company

Allegro Microsystems, LLC

Angelo M Puzella

John B Francis

Patricia S Dupuis

Joseph A Licciardello

Joseph M Crowder

Donald A Bozza

John Sangiolo

Michael C Fallica

Dennis W Mercier

James A Robbins

Kenneth S Komisarek

Mark Ackerman

Jeffrey Paquette

Stephen J Pereira

Kassam K Bellahrossi

Susan C Trulli

Jerome Howard Pozgay

Yueh-Chi Chang

Joseph R Ellsworth

Sergey N Makarov

Fernando Beltran

Ethan Santosh Heinrich

Jeffrey C Upton

Sharon Ann Elsworth

Michael G Sarcione

Peter Dennis Morico

Dimitry Zarkh

Roberto W Alm

Steven T Cummings

Philip M Henault

Norman Armendariz

James A Roche, Jr

Mario D'Amico

Patrick Morrison

Randal W Oberle

Thomas C Smith

Brian D Lamont

Leon Wardle

Gary Kingston

Arsenio Vargas

Joseph T Mossoba

Steven D Nguyen

Tunglin L Tsai

Lance A Auer

Kathe I Scott

Craig C Lemmler

Gary P Kingston

Mario D' Amico

A system includes a container configured to hold one or more items contaminated with a contaminant. The system also includes a power amplifier configured to output radio frequency (RF) energy at a frequency substantially equal to a resonant frequency of the contaminant. The system further includes a horn connected to the power amplifier and configured to propagate the RF energy along a length of the container and through the one or more items to deactivate, damage, or destroy the contaminant by molecular resonance. In addition, the system includes an RF absorbing liner disposed on interior surfaces of the container and configured to absorb and reduce reflection of at least some of the RF energy.

System and method for decontamination of materials

An example balun includes a center conductor that passes through a printed wiring board having multiple dielectric layers and cage vias arranged relative to the center conductor. The cage vias include a first set of cage vias that extend between an unbalanced connection to the balun and a balanced connection to the balun. The first set of cage vias are part of a first circular arc and are connected to electrical ground through a first ground ring. The cage vias include a second set of cage vias that extend from the unbalanced connection part-way through the printed wiring board. The second set of cage vias are part of a second circular arc and are connected to the electrical ground through a second ground ring. The second circular arc is longer than the first circular arc.

Balun comprising stepped transitions between balance and unbalance connections, where the stepped transitions include ground rings of differing lengths connected by caged vias

A low profile, low loss, wide band, wide scan volume radome assembly is provided for an antenna. The radome assembly includes a fabric radome element disposable over the antenna, first radome securing elements securably embedded within the fabric radome element and second radome securing elements securably embedded within the antenna. The second radome securing elements are respectively engageable with the first radome securing elements to thereby secure the fabric radome element over the antenna.

Radome assembly

A coaxial transmission line structure having a center conductor section having an input contact and an output contact the output contact being larger than the input contact, the center conductor having a plurality of different geometrically shaped, electrically conductive layers having sizes progressively increasing from the input contact to the larger output contact to conductor transition from the input contact to the larger output contact, the electrically conductive layers being electrically interconnected by staggered microvias passing through dielectric layers to the center, and (B) an outer conductor section disposed about, coaxial with, and electrically isolated from, the center conductor by the dielectric layers.

Coaxial transmission line structure

An radio-frequency (RF) interposer enables low-cost, high-performance RF interconnection of two or more large-area printed wiring boards (PWBs). The RF interposer may be provided as a multi-port coaxial structure embedded in a metal (or metalized) carrier. The RF interposer may include one or more conductive shims having spring fingers to provide contact across air-gaps between a PWB RF ground plane and a ground plane of the RF interposer. Retractable pins may be used as the coaxial transmission line center conductors. The RF interposer may be provided as an N&#xd7;M grid of unit cells each having one or more RF ports and a cavities to provide clearance for a PWB component.

Eggcrate radio frequency interposer

Described is a calibration technique for an Active Electronically Scanned Array (AESA) having a scalable, analog monopulse network.

Calibration system and technique for a scalable, analog monopulse network

A turnstile antenna element and balun for use in a phased array are described. The antenna includes a plurality of stacked bowtie radiators. Each stacked bowtie radiator includes a driven conductor and a passive conductor separated by a dielectric. The balun includes a central member having dielectric slabs symmetrically disposed on external surfaces thereof. At least one end of the balun is provided having a shape such that conductors on the dielectric slabs of the balun can be coupled to the driven radiator conductors.

Stacked bowtie radiator with integrated balun

A mixed-signal, multilayer printed wiring board fabricated in a single lamination step is described. The PWB includes one or more radio frequency (RF) interconnects between different circuit layers on different circuit boards which make up the PWB. The PWB includes a number of unit cells with radiating elements and an RF cage disposed around each unit cell to isolate the unit cell. A plurality of flip-chip circuits are disposed on an external surface of the PWB and a heat sink can be disposed over the flip chip components.

Transmit/receive daughter card with integral circulator

Embodiments of the concepts described herein are directed toward a common RF building block in the form of a monolithic assembly for an AESA array featuring a scalable RF design based on 2:3 combining. The monopulse network building blocks are substantially identical, enabling an interchangeable sub-array architecture that is independent of position in the AESA aperture and receive sum channel sidelobe performance. In one embodiment, a passive Monopulse Beamformer may provide the passive 2:3 RF coupling/combining network and an active Monopulse Processor may perform amplitude and phase weighting for the combined signals from the Monopulse Beamformer.

Scalable, analog monopulse network

In one aspect, an active electronically scanned array (AESA) card includes a printed wiring board (PWB) that includes a first set of metal layers used to provide RF signal distribution, a second set of metal layers used to provide digital logical distribution, a third set of metal layers used to provide power distribution and a fourth set of metal layers used to provide RF signal distribution. The PWB comprises at least one transmit/receive (T/R) channel used in an AESA.

Active electronically scanned array (AESA) card

A multilayer circuit board assembly includes one or more radio frequency (RF) interconnects between different circuit layers on different circuit boards which make up the circuit board assembly. The RF interconnects can include one or more RF matching pads which provide a mechanism for matching impedance characteristics of RF stubs to provide the RF interconnects having desired insertion loss and impedance characteristics over a desired RF operating frequency band. The RF matching pads allow the manufacture of circuit boards having RF interconnects without the need to perform any back drill and back fill operation to remove stub portions of the RF interconnects in the multilayer circuit board assembly.

Radio frequency interconnect circuits and techniques

An antenna element and balun are described. The antenna includes a plurality of droopy bowtie antenna elements disposed on dielectric block and a feed point. The balun includes a central member having dielectric slabs symmetrically disposed on external surfaces thereof. At least one end of the balun is provided having a shape such that conductors on the dielectric slabs of the balun can be coupled to the the droopy bowtie antenna elements.

Droopy bowtie radiator with integrated balun

Described is a mobile radar system which provides both persistent surveillance and tracking of objects with adaptive measurement rates for both maneuvering and non-maneuvering objects. The mobile radar system includes a vehicle having mounted therein an active, electronically-steerable, phased array radar system movable between a stowed position and a deployed position and wherein the phased array radar system is operational in both the deployed and stored positions and also while the vehicle is either stationary or moving. Thus, the mobile radar system described herein provides for longer time on target and longer integration times, increased radar sensitivity and improved Doppler resolution and clutter rejection. This results in a highly mobile radar system appropriate for use in a battlefield environment and which supports single-integrated-air-picture metrics including but not limited to track purity, track completeness, and track continuity and thus improved radar performance in a battlefield.

Mobile radar system

Panel array

Growing community of inventors

Marlborough, MA, United States of America

Angelo M Puzella