A plug for an electromagnetic field channel. The plug may have a tubular body capped at one end. The body may be composed of a plurality of coaxial layers, including electromagnetically inert outermost and innermost layers. A MU-metallic second layer may be wrapped by the outermost electromagnetically inert layer, and a copper third layer may be wrapped by the innermost electromagnetically inert layer. An air gap may be disposed between the second and third layers.

A device for shielding electromagnetic fields is provided. The device embodies a helmet having layers of a nickel-iron ferromagnetic alloy, a copper mesh, and an air gap; at least one channel extending radially from the helmet; at least one plug configured to removably fit into respective channels wherein each plug is operative shielding electromagnetic fields by way of the channel; and at least one sensor incorporated into the helmet.

What is provided is an adapter plate for HF structures, which is set up for being disposed between a back of a circuit board and a reflector, wherein the adapter plate is electrically conductive, and the adapter plate has an opening or a cavity at every location where an element is passed through the circuit board to the side of the adapter plate, wherein at least one element is passed through the circuit board exclusively for ground contacting.

According to various embodiments of the present invention, an electronic device comprises: a connector comprising a conductive shell and at least one terminal arranged inside the conductive shell; a capacitor; and a circuit board comprising a first board layer at least partially facing the connector, a second board layer formed beneath the first board layer, and at least one third board layer formed between the first board layer and the second board layer. The circuit substrate comprises: a ground area made of a conductor formed at least one of the first board layer, the second board layer, or the at least one third board layer and electrically connected to the conductive shell through the capacitor while being connected to a ground portion of the electronic device; a first conductive area which is a partial area of the first board layer facing the connector, the first conductive area being made of a conductor having a first size and electrically connected to the conductive shell; and a second conductive area which is an area of the second board layer at least partially facing the first conductive area with the at least one third substrate layer interposed therebetween, the second conductive area being made of a conductor having a second size wider than the first size and electrically connected to the first conductive area. At least one of the first conductive area and the second conductive area may be arranged adjacent to the ground area such that the first conductive area and the second conductive area are electrically separated from the ground area.

The technology described herein is generally directed towards a gateway device (e.g., a cable modem or telecommunications modem) that is coupled to a base component. The base component couples to an interchangeable lid that is coupled to an electronic device. This forms a sealed housing for outdoor use, e.g., between a provider head end and the subscriber(s). A universal interface provides power or a network connection, or both, to the electronic device. The base component and/or the sealed housing protect the internal components against environmental effects. The base component and/or the sealed housing protect against external RF signals from entering, and internally generated RF signals from exiting.

The disclosure provides an electronic device having an electromagnetic shielding structure for preventing an antenna performance degradation. The disclosed electronic device may include: an antenna disposed in some areas of the electronic device; a printed circuit board; and a display module including a display panel, one or more signal lines coupled to the display panel, and a flexible substrate on which the one or more signal lines are disposed. The flexible substrate may include: a conductive layer coupled to the printed circuit board in a curved state and configured to shield an electromagnetic wave radiated from the one or more signal lines to the antenna; and a stress neutralization layer of which a material can be deformed over time in response to a shape of the flexible substrate coupled in a curved state. The stress neutralization layer may be disposed between the flexible substrate and the conductive layer.

The present disclosure relates to an enclosure comprising a body, a lid, a locking member, and a resilient element arranged between the body and the lid. The resilient member is arranged to exert a resistive force on the lid when pressed between the body and the lid to seal the enclosure in a sealed position. The body includes at least a first recess and the lid includes at least a second recess, where each pair of a first recess and second recess is arranged to align in the sealed position, and to form a corresponding channel when aligned against the resistive force such that the enclosure is in the sealed position, and to then receive a corresponding locking member in the channel.

The technology described herein is generally directed towards a gateway device (e.g., a cable modem or telecommunications modem) that is coupled to a base component. The base component couples to an interchangeable lid that is coupled to an electronic device. This forms a sealed housing for outdoor use, e.g., between a provider head end and the subscriber(s). A universal interface provides power or a network connection, or both, to the electronic device. The base component and/or the sealed housing protect the internal components against environmental effects. The base component and/or the sealed housing protect against external RF signals from entering, and internally generated RF signals from exiting.

Methods and systems capable of launching signal-carrying transverse electromagnetic waves onto a transmission line in the higher voltage region of the transmission distribution network. Such methods and systems may include a surface wave launcher located in the higher voltage region, a network unit located in a lower voltage region, and an arrester separating the surface wave launcher and the network unit, the arrester preventing voltage from arcing over from the higher voltage region to the lower voltage region where the arrester provides the signal to the surface wave launcher.

Disclosed is a device communicably coupled to a power transmission line and capable of launching transverse electromagnetic waves onto the transmission line. The waves propagate data received from a data source connected to the device through a center conductor surrounded by a shield conductor. The device may include a reflector and a coupler adjacent to each other, the reflector electrically connected to the shield conductor and the coupler electrically connected to the center conductor at an unshielded connection point, wherein time-varying E-fields between the reflector and coupler are caused by the data received from the data source, and induce a transverse magnetic wave that propagates longitudinally along the surface of the transmission line.