Raytheon Company

E.i. Dupont De Nemours and Company

Ike Chang

Richard W Nichols

Irwin L Newberg

Clifton Quan

James Stephen Mason

Joel C Roper

Gilbert M Shows

Raymond Dean Eppich

Jonathan D Gordon

Gustavo A Burnum

Harold S Fenger

An electronically scanned array antenna. The novel antenna includes a first planar array of antenna elements and one or more side planar arrays of antenna elements, each side array adjacent to the first array and tilted at a predetermined angle relative to the first array. In an illustrative embodiment, the antenna also includes a plurality of transmit/receive modules, each module coupled to one antenna element. Each transmit/receive module includes phase shifters for varying the relative phases of the antenna elements to form a desired overall beam pattern, and a low noise amplifier and high power amplifier for amplifying signals received and transmitted by the antenna element, respectively. In an illustrative embodiment, a processor provides individual phase and channel enable control signals for independently controlling the phase shifters and amplifiers, respectively, of each module.

Active electronically scanned array antenna for satellite communications

According to one embodiment, a circuit board comprises an anisotropic film disposed outwardly from a first flexible dielectric layer, and a second flexible dielectric layer disposed outwardly from the anisotropic film. The first and second flexible dielectric layers each have at least one conductive trace conductively coupled to a pad. The anisotropic film forms a via region that conductively couples the pad of the first flexible dielectric layer to the pad of the second flexible dielectric layer, and electrically isolates the conductive trace of the first flexible dielectric layer from the conductive trace of the second flexible dielectric layer.

Rigid/flexible circuit board

Provided is an antenna transceiver system for transmitting and receiving voice, digital data, radar and IR signals, and for processing received signals for use by an operator. The system includes an antenna array having a plurality of radiating elements, each element connected to a transmit/receive ('T/R') module. Each T/R module includes phase shifters, as well as a phase conjugation module for transmitting a return signal to a location along a beam path of an incoming signal. Transmission of the return signal does not require knowledge of the location of either the signal source or the antenna transceiver system. The antenna transceiver system is disposed on a plurality of vertically aligned planes integrated into a compact unit. The units can be embedded in headgear of a user, allowing for hands-free operation of the system. Alternatively, the antenna transceiver system can be integrated into a vehicle, man-transportable backpack, or other designated platforms.

Antenna transceiver system

A phased array antenna adapted to be mounted in a helmet. In the illustrative embodiment, the antenna comprises a substrate and an array of radiating elements disposed on said substrate, each of the elements including a-resonant cavity and a mechanism for feeding the cavity with an electromagnetic signal., The cavity is formed in a multi-layer structure between a ground plane and a layer of metallization. A radiating slot or slots are provided in the layer of metallization. A first layer of dielectric material is disposed within the cavity. The feed mechanism is a microstrip feed disposed in the first layer of dielectric material parallel to a plane of a portion of the substrate over which an associated element is disposed. A layer of foam is disposed between the layer of dielectric material and the ground plane. Second and third parallel layers of dielectric material are included in each element. The second layer is disposed adjacent to the ground plane. A layer of element interconnection circuitry is disposed between the second and third layers of dielectric material. A transmit/receive module or circuitry for each element is secured to the third layer of dielectric material. The substrate may be conformal or conformable, as well as rigid. An arrangement is included for steering a beam transmitted or received by the antenna.

Conformal electronically scanned phased array antenna and communication system for helmets and other platforms

Composites of certain amorphous copolyamides are reinforced with glass, p-aramid or carbon filaments.

Reinforced composites

Composites comprising homopolymer from bis(para-amino cyclohexyl)methane and dodecanedioic acid reinforced with 50 to 70% by volume of graphite or p-aramid filaments.

Growing community of inventors

Santa Monica, CA, United States of America

Ike Chang