A method for using a patch for pain relief, and the patch are provided. The method includes determining a location corresponding to source of pain in a body, and disposing a patch including a reactive capacitance material at one of a location corresponding to source of pain or a location between location corresponding to source of pain and a brain. The patch is disposed adjacent to the surface of the body. The reactive the capacitance material comprises conductive particles dispersed in a binder so that at least a majority of the conductive particles are adjacent to, but do not touch, one another. The patch includes a first outer layer, a reactive capacitance layer, and a second outer layer. The reactive capacitance layer is disposed between the first outer layer and the second outer layer. The reactive capacitance layer is formed of the reactive capacitance material.

A flexible antenna is provided. The flexible antenna includes a cable comprising at least one conductor, and an antenna body comprising a protective layer and a flexible circuit layer. The flexible circuit layer including a non-conductive sheet, at least one conductive feed pad and at least one antenna element. The at least one antenna element is formed of a conductive particle based material comprising conductive particles dispersed in a binder so that at least a majority of the conductive particles are adjacent to, but do not touch, one another. The at least one antenna element is disposed between the protective layer and the flexible circuit layer. The at least one conductor of the cable is electrically connected to the at least one feed pad.

A hexagonal ferrite material includes a Y phase hexagonal ferrite material having the composition Sr.sub.2Co.sub.2Fe.sub.12O.sub.22 or Sr.sub.2-xNa.sub.xCo.sub.2-xSc.sub.xFe.sub.12O.sub.22, 0<x<2, doped with a trivalent element, a tetravalent element, and/or a transition metal.

An isolation barrier for reducing coupling between a transmitting antenna on a platform and a receiving antenna on the same platform. The isolation barrier expands the isolation capabilities of radar absorbing material (RAM) to the low frequency region by integrating dielectric loaded corrugations with the RAM. The isolation barrier includes a plurality of corrugations, each including a channel with two conductive walls and a conductive base, having a depth greater than a quarter of the wavelength corresponding to the low-frequency limit of the shared operating frequency band of the transmitting antenna and the receiving antenna. A layer of radar absorbing material (RAM) covers the corrugations.

A combination of a media display and an electronic article surveillance (EAS) detection system is provided for use with an RF security tag, the combination comprising: a base for retaining a power supply, housing a system controller and each of the media display and the EAS such that the media display is proximate the EAS, the media display including a plurality of LCD screens, an at least one electrical line in electrical communication with the power supply and the plurality of LCD screens; the EAS including a transceiver, and an at least one RF antenna that is an emitter and an at least one RF antenna that is a receiver or an at least one RF antenna that is a combination emitter and receiver, the RF antennae in electronic communication with the transceiver; and a physical shield, the physical shield located between at least the plurality of LCD screens and the RF antennae of the EAS detection system.

A patch antenna is provided. The patch antenna includes a cable comprising at least one conductor, and an antenna body comprising a protective layer and a flexible circuit layer. The flexible circuit layer including a non-conductive sheet, at least one conductive feed pad and at least one antenna element. The at least one antenna element is formed of a conductive particle based material comprising conductive particles dispersed in a binder so that at least a majority of the conductive particles are adjacent to, but do not touch, one another. The at least one antenna element is disposed between the protective layer and the flexible circuit layer. The at least one conductor of the cable is electrically connected to the at least one feed pad.

The present invention relates to a preparation method for an electromagnetic wave shield composite material and the electromagnetic wave shield composite material prepared by the method. The present invention uses a highly conductive carbon fiber prepared by electroless and electrolytic continuous processes, and thus is suitable for an EMI shield due to having an excellent conductivity and low surface resistance, and is capable of providing the electromagnetic wave shield composite material having an excellent productivity and economic value. Furthermore, the electromagnetic wave shield composite material of the present invention can be used for blocking electromagnetic waves by being inserted into a cell phone cover and a cell phone pouch, and can also be applied to a bracket for protecting an LCD of a portable display product.

A high-frequency module includes a first board on which an electronic device is mounted, a second board on which at least wiring is formed, and a radio-wave absorber disposed between the first board and the second board. Multiple slits are formed in the radio-wave absorber.

Provided is an electric-wave absorbing sheet that can favorably absorb high frequency electric waves in the millimeter-wave band or higher and that has high handleability. The electric-wave absorbing sheet includes a flexible electric-wave absorbing layer 1 that contains a particulate electric-wave absorbing material 1a and a resin binder 1b. The electric-wave absorbing material is a magnetic iron oxide that magnetically resonates at a frequency band equal to or higher than the millimeter-wave band.

According to various embodiments, an electronic device may comprise: a housing; an antenna structure disposed in an inner space of the housing, the antenna structure including a substrate having a first surface and a second surface oriented toward a direction opposite to the first surface, and at least one first antenna element disposed in a space between the first surface and the second surface and having a beam pattern formed toward a conductive part; an electric wave absorbing member disposed between the conductive part and the at least one first antenna element so as to be disposed in a path in which the beam pattern is formed; and a first wireless communication circuit disposed in the inner space of the housing and configured to transmit or receive a wireless signal of a first frequency band through the at least one first antenna element.