Vorbeck Materials Corporation

Other

Trentice V Bolar

John S Lettow

Sriram Manivannan

Dan F Scheffer

James A Turney

Kate Redmond

Kenneth E Fritsch

Mathew A Hudspeth

Larry Hurzon

Jaclyn Scott

Victor Contreras

Michael Filipelli

Sriram Manivanna

Samarpita Chowdhury

Brian Losey

Josiah Henry

Larry Herzon

Embodiments relate to a sensor node communication system that determines the presence of an object. The system includes man-portable nodes that communicate via a self-organizing LAN. Each node includes a control circuit that has multiple cores, multithreading, and/or parallel processing. The control circuit establishes the LAN, captures an image, determines a presence of a predetermined object in the image using a machine learning algorithm, generates a first notification when presence of the predetermined object is determined, and generates a second notification when the presence is not determined. The control circuit detects an electromagnetic environment, determines unused frequency bands, and adapts a radio working parameter to broadcast in the unused frequency band. Determining the unused frequency bands includes the use of a spectrum sensing method. The control circuit detects an electromagnetic environment, determines unused frequency bands, and adapts a radio working parameter to broadcast in unused frequency bands.

Sensor node communications system and related methods

A wearable apparatus includes an antenna affixed to a surface of the apparatus. A device is conductively coupled to the antenna. A control circuit is communicatively coupled to a sensor, the device and, a communications device. The antenna includes a composition that includes a polymer and carbonaceous material made up of individual graphene sheets that are present in the polymer in a 3D percolated network. A mobile device is communicatively coupled to a cellular RF source via a first wireless signal. The control circuit is configured to communicate with the mobile device via a third RF signal; communicate with the RF source via a second RF signal; and cause the mobile device to communicate with the RF source via the third RF signal when the second RF signal is greater than the first RF signal.

Wireless signal transmission using access point networks in wearable devices

The instant disclosure relates to EMI shielding structures. A conductive composition is formed that includes a polymer and graphene present as a 3D-matrix therein. Rectangular EMI shielding panels are formed using the composition. Rectangular EMI shielding panels are affixed orthogonal to each other. The EMI shielding panels are successively overlapped to form a plurality of interconnected EMI shielding planes. The EMI shielding panels are affixed to each other to form a helical EMI shielding structure that folds and unfolds along its center axis. The EMI shielding planes are angularly offset from each other about the center axis to form a helical structure when in the unfolded state. The EMI shielding panels include an encapsulating layer and/or metallic layer. The EMI shielding planes rotate about the center axis when the HES structure transitions between the folded and unfolded states.

Electromagnetic interference shielding structures

Embodiments relate to a RF localization system that determines the position of a RF source of interest (RFSOI) relative to the RFLS. The RFLS includes man-portable nodes that communicate via a self-organizing WAN. Each node includes a communications device conductively coupled to antenna elements oriented in each nodal cardinal direction and battery each communicatively coupled to a control circuit(s). The control circuit is configured to: establish the WAN; capture RSSI values for each antenna element; determine the position of the RFSOI relative to the node; when not functioning as a primary node, transmit the determined position to a primary node or a computing device that's external to the WAN for processing; and when functioning as a primary node, determine the relative position of the RFSOI relative to the plurality of nodes using the received determined position. The primary node determines the position of the RFSOI relative to the nodes.

System to determine the location of a radio frequency source using radio frequency signal strength and related methods

Embodiments of the present invention relate to electromagnetic interference (EMI) shielding structures. Rectangular EMI shielding panels are formed that include a first and second ends. A pair of rectangular EMI shielding panels are affixed orthogonal to each other at their first ends. The pair of rectangular EMI shielding panels are successively overlapped with each other to thereby form a plurality of interconnected EMI shielding planes. The pair of rectangular EMI shielding panels are affixed to each other at their second ends to form a helical EMI shielding structure that unfolds to an unfolded state and folds to a folded state along its center axis. Here, the plurality of interconnected EMI shielding planes are each angularly offset from each other about the center axis to form a helical structure when in the unfolded state. The EMI shielding panels include an encapsulating layer and/or metallic layer.

A wearable apparatus includes an antenna affixed to a surface of the apparatus. A device is in electrical communication with the antenna. A control circuit is in electrical communication with the device and a communications device. The antenna includes a composition that includes a polymer and carbonaceous material made up of individual graphene sheets that are present in the polymer in a three-dimensional percolated network. A mobile device is communicatively coupled to a cellular RF source via a first wireless signal. The control circuit is configured to communicate, using the communications device, with the mobile device via a third RF signal; communicate, using the device, with the RF source via a second RF signal; and cause the mobile device to communicate with the RF source via the third RF signal when the second RF signal is greater than the first RF signal.

Embodiments of the present invention relate to a graphene-based Rotman lenses and associated methods of formation. In some embodiments, a lens is positioned proximate to a surface of a dielectric plate. In other embodiments, the lens comprises a first lens contour positioned opposite a second lens contour. In certain embodiments, a plurality of first transmission lines extends from the first lens contour and each terminating at a particular first port. In yet still other embodiments, a plurality of second transmission lines extends from the second lens contour and each terminating at a particular second port. In some embodiments, the lens includes a composition having a polymer(s) and a three-dimensional network of individual sheets of graphene positioned within the composition. In certain embodiments, the first port and/or the second port has a width of &#x3bb;/2 or less.

Graphene-based rotman lens

Embodiments of the present invention relate to graphene-based Rotman lenses. In an embodiment, a lens is formed on a surface of a dielectric plate. The lens comprises a composition having individual sheets of graphene. The lens includes a plurality of first transmission lines extending from a first lens contour and a plurality of second transmission lines extending from a second lens contour. The plurality of first transmission lines each terminate at a first port. The plurality of second transmission lines each terminate at a second port. The first contour and the second contour are positioned opposite each other. The first port and/or the second port has a width of &#x3bb;/2 or less. The individual graphene sheets form a three-dimensional interconnected network within the composition.

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Columbia, MD, United States of America

Trentice V Bolar