Patent classifications
H05K9/0005
Electromagnetically shielded coverings for optical openings
The electromagnetic shielding of an enclosable building structure is provided by applying a shielded covering to overlay optical openings in the building structure. The shielded covering comprises a metal-coated woven substrate and a shielding coupling. The metal-coated woven substrate has a woven substrate and a metal coating. The woven substrate may be organic and comprise threads of intermingled fibers such as silk fibers. The metal-coated woven substrate may also have a protection feature such as transparent resin, of barriers of glass or transparent polymeric material. The shielded coupling connects the shielded covering to other shielding components of a shielded building structure to preserve shielding continuity over the interface between shielding components.
RADIO FREQUENCY AND ELECTROMAGNETIC INTERFERENCE SHIELDING WINDOW SHADE
The present disclosure relates to a radio frequency and electromagnetic interference shielding window shade comprising: a roller tube comprising a roller shade clutch and an end plug connected through a cylindrical body, the clutch configured to rotate the roller tube; a shade material extending between a first end attached to the roller tube and a second end extending away from the roller tube, wherein the shade material is configured to rotate about the cylindrical body of the roller tube to roll or unroll the shade, the shade material comprising a shielding layer attached to a side of a base layer and comprising a conductive material, wherein unrolling the shade material from the roller tube covers at least a portion of a window, thereby shielding the window from the radio frequency and electromagnetic interference at an attenuation of at least about 30 dB at a frequency of at least about 10 KHz.
Modular electromagnetically shielded enclosure
A modular electromagnetically shielded enclosure is provided. The enclosure includes connective frame elements that make up a support frame assembly. Conductive fabric panels are fastened to the connective frame elements to form walls and ceiling. A modular electromagnetically shielded floor assembly is made up of floor panels with rabbet edges that form channels for the placement of electromagnetic shielding gaskets and floor panel connectors. The conductive fabric panels that make up the walls of the enclosure are fastened to the modular electromagnetically shielded floor assembly to form a faraday cage environment that can be readily assembled to create a large or very large shielded enclosure and that can be reconfigured with continued radiofrequency shielding effectiveness.
Modular Electromagnetically Shielded Enclosure
A modular electromagnetically shielded enclosure is provided. The enclosure includes connective frame elements that make up a support frame assembly. Conductive fabric panels are fastened to the connective frame elements to form walls and ceiling. A modular electromagnetically shielded floor assembly is made up of floor panels with rabbet edges that form channels for the placement of electromagnetic shielding gaskets and floor panel connectors. The conductive fabric panels that make up the walls of the enclosure are fastened to the modular electromagnetically shielded floor assembly to form a faraday cage environment that can be readily assembled to create a large or very large shielded enclosure and that can be reconfigured with continued radiofrequency shielding effectiveness.
Method of optimizing the EMI shielding and infrared transparency of GaAs IR windows
A method of manufacturing a structurally competent, EMI-shielded IR window includes using a mathematical model that combines the Sotoodeh and Nag models to determine an optimal thickness and dopant concentration of a doped layer of GaAs or GaP. A slab of GaAs or GaP is prepared, and a doped layer of the same material having the optimal thickness and dopant concentration is applied thereto. In embodiments, the doped layer is applied by an HVPE method such as LP-HVPE, which can also provide enhanced GaAs transparency near 1 micron. The Drude model can be applied to assist in selecting an anti-reflective coating. If the model predicts that the requirements of an application cannot be met by a doped layer alone, a doped layer can be applied that exceeds the required IR transparency, and a metallic grid can be applied to improve the EMI shielding, thereby satisfying the requirements.
ELECTRO-OPTIC WINDOWS
An electro-optic window is provided, together with a method of manufacturing the window. The window (3) is made of a material substantially transparent to at least one of infra-red, visible and UV radiation and treated to have reduced RF/MI-CROWAVE transmission characteristics by the provision of a grid (1) set into at least one surface (2) thereof. The grid (1) is formed of a material selected to be either reflective or absorptive to RF/MICROWAVE radiation.
Window of an aircraft with an electromagnetic shield
A window of an aircraft having electromagnetic shielding performance and environment-resistant sealing performance, an aircraft, and an assembly method for a window of an aircraft are provided. A conductive seal member (60) is provided so as to face and surround the peripheral side surface of a window panel and is sandwiched between a conductive film (41) and an outer retainer (22). In the conductive seal member (60), thin wire materials (62) made of a conductive material such as aluminum are embedded in a seal member body (61) made of a material, such as silicone rubber, having an electric insulating property, waterproofness and pliability. An electromagnetic shielding effect, and environment-resistant sealing properties such as an electric insulating property and waterproofness can be both ensured by the conductive seal member (60).
Graphene laminate structures
Provided are methods of forming graphene laminate compositions and architectures. The method comprises: (i) contacting a graphene structure comprising one or more planar graphene sheets with a first interlayer material; (ii) depositing of a conductive material, where in the conductive material is deposited along an edge of the graphene and one end of the first interlayer; and (iii) contacting the graphene structure with a second interlayer material. Also provided are graphene laminates structures comprising doped graphene films having improved mechanical strength, electrical mobility and optical transparency.
Optical window with integrated temperature sensing
A method of controlling a temperature profile of an optical window comprising: measuring a temperature-dependent electrical property of a thermally sensitive material included in the optical window using an embedded electromagnetic interference shield in the optical window to determine the temperature profile of the optical window, the embedded electromagnetic interference shield including a two-dimensional array of electrically conductive wires; and based on the measurements, selectively biasing at least one wire of the two-dimensional array of electrically conductive wires to locally alter the temperature-dependent electrical property of the thermally sensitive material in at least one selected spatial region of the optical window to control the temperature profile of the optical window.
SWIR-MWIR transparent, conductive coating for EMI protection of NCOC
A shortwave to midwave infrared (SWIR-MWIR) optical window includes a substrate formed from a nanocomposite optical ceramic material and a coating disposed on the substrate to provide electromagnetic interference (EMI) protection. The coating is electrically conductive and SWIR-MWIR transparent and comprises a doped zinc oxide material. A method of protecting an EO/IR sensor from electromagnetic interference (EMI) includes depositing a thin film electrically conductive and SWIR-MWIR transparent coating over a surface an optical window of the EO/IR sensor. The optical window is formed from a nanocomposite optical ceramic material and has a curved surface. The thin film electrically conductive and SWIR-MWIR transparent coating comprises an electrically conductive zinc oxide material.