Clothing for shielding a person from radio frequency energy relating to an electronic device includes a garment adapted to be worn by the person that includes at least one pocket having an inner panel and an outer panel. The pocket is sized to bold the electronic device. The inner panel of the pocket includes an electrically conductive shield material.

Provided are systems and methods for cloaking an object on a ground plane. A thin dielectric metasurface is used to reshape the wavefronts distorted by the object in order to mimic the reflection pattern of a flat ground plane. To achieve such carpet cloaking, the reflection angle is made equal to the incident angle everywhere on the object by providing a graded metasurface with a designed phase gradient. This provides additional phase to the wavefronts to compensate for the phase difference amongst lightpaths induced by the geometrical distortion. One exemplary metasurface is described which is designed for the microwave range using highly sub-wavelength dielectric resonators. The approach can be applied to hide any scatterer under a metasurface of class C1 (first derivative continuous) on a groundplane not only in the microwave regime, but also at other frequencies, including higher frequencies, up to the visible.

A radar absorbing structure has a body that forms an air and/or space vehicle. At least one aerodynamic surface is located on the body. At least one resistive layer is located on the at least one aerodynamic surface and allows substantial damping of electromagnetic waves on the at least one aerodynamic surface by means of the destructive interference. A plurality of fibers are located in the resistive layer. At least one binding agent holds the fibers together.

A carbon fiber composite includes a carbon fiber not connected to a substrate, an insulative layer coating at least a portion of the carbon fiber, and a material deposited on at least a portion of the insulative layer. A method for forming a carbon fiber composite includes electrostatically applying a plurality of carbon fibers to a substrate, coating each of the carbon fibers with an insulative material, depositing a material onto a least a portion of the insulative material of each of the carbon fibers, and dissolving the substrate to release each of the carbon fibers.

Disclosed is an antenna for enhancing link coupling efficiency in a power transmission. The antenna may comprise a plurality of coil windings layered across each other. It may be noted that each coil winding may be deployed with a plurality of edges. It may be understood that an edge is separated with another edge at a predetermined distance on each coil winding. It may be noted that the edge and the another edge is a subset of the plurality of edges.

An antenna device for receiving electromagnetic waves and a method for operating an antenna device. The antenna device is fashioned having: a bearer; at least one receive antenna device situated at an external side of the bearer, for receiving electromagnetic waves having a first polarization; at least one repolarization device situated at the external side of the bearer and fashioned to re-emit electromagnetic waves impinging on the repolarization device having the first polarization as electromagnetic waves having a second polarization; and a filter device situated at the external side of the bearer and fashioned to absorb electromagnetic waves having the second polarization.

A composite fabric structure for avoiding radar detection is disclosed. It mainly comprises a conductive fabric layer and a thermoplastic material layer, wherein the conductive fabric layer is formed by threads of a plurality of conductive spiral wires interlacing with threads of a plurality of non-conducting textile yarns and a plurality of metal wires, and wherein the conductive fabric layer is further coated with the thermoplastic material layer to form a composite fabric.

An object of the present invention is to provide a noise absorbing fabric in which electromagnetic waves are not susceptible to being reflected and which has superior noise absorbing ability, a noise absorbing fabric having noise absorbing ability across a wide band, a noise absorbing fabric that is soft, highly flexible, thin, and can be incorporated in intricate portions of electronic components or housings and the like by being bent or folded and the like, and a noise absorbing fabric that can be easily and stably produced without using an expensive soft magnetic material, is inexpensive and demonstrates high performance. In the noise absorbing fabric, a metal is subjected to metal processing on at least one side of a fabric, and the common logarithmic value of the surface resistivity of the surface subjected to metal processing is within the range of 0 to 4.

The invention is a method to modify textiles with a printing and lamination method to produce textile materials with integrated RF shielding. The shielding modifications are comprised of a network of interconnected surface patterns of periodic unit geometries organized in an arrangement to reflect RF waveforms over a range of frequencies below the 10 GHz; to shield the majority or incident RF radiation. Use of this invention enables permanent transfer of many RF shielding patterns on most textile materials for production of RF shielded consumer and industrial clothing as well as object and personal coverings.

Provided is an apparatus and method for radar calibration that utilizes external shielding structures to be constructed around the body frame of a system to manage external signature presence and block unwanted signal emissions and intrusions. The inventive structures can adapt to desired user requirements or to environmental change as needed. The variable shielding with isolating connectors to the body frame of the system allows for aerodynamic needs to be sustained due to the mesh design while also protecting against electromagnetic spectrum interference and electro-optical short wave and long wave infrared signature emissions. The shielding can also be formed to emit a known or desired radio frequency response based on geometric shapes in order to influence radar cross-section readings. Communication with external environment is completed through the use of the shielding as a series of antennas.