Abstract: A wideband antenna system with multiple antennas and at least one parasitic element is disclosed. In an exemplary design, an apparatus includes a first antenna, a second antenna, and a parasitic element. The first antenna has a shape of an open-ended loop with two ends that overlap and are separated by a gap. The second antenna may also have a shape of an open-ended loop with two ends that overlap and are separated by a gap. The parasitic element is located between the first and second antennas. The first and second antennas may be placed side by side on a board, located at either the top end or the bottom end of a wireless device, and/or formed on opposite sides (e.g., the front and back sides) of the board. The parasitic element may be formed on a plane that is perpendicular to the plane on which the first and second antennas are formed.

Abstract: A multi-beam antenna comprises an array of feeds illuminating a reflector, the feeds being associated in a plurality of groups. Each feed comprises a polarizer, two diplexers and four ports operating in four different colours. All the feeds belonging to the same group comprise first ports having the same first colour, or second ports having the same second colour, linked together to form a first beam and third ports having the same third colour, or fourth ports having the same fourth colour, linked together to form a second beam.

Abstract: Electronic devices may include radio-frequency transceiver circuitry and antenna structures. The antenna structures may form a dual arm inverted-F antenna and an additional antenna such as a monopole antenna sharing a common antenna ground. The antenna structures may have three ports. A first antenna port may be coupled to an inverted-F antenna resonating element at a first location and a second antenna port may be coupled to the inverted-F antenna resonating element at a second location. A third antenna port may be coupled to the additional antenna. An adjustable component may be coupled to the first antenna port to tune the inverted-F antenna. The inverted-F antenna may be near-field coupled to the additional antenna so that the inverted-F antenna may serve as a tunable parasitic antenna resonating element that tunes the additional antenna.

Abstract: Array antennas for wireless transmission having an array of emitters/receivers that are compactly arranged above an antenna feed and ground plate. These high gain devices may be configured to operate in any appropriate band, such as the 5.15 to 5.85 GHz band and/or the 2.40-2.48 GHz band. The antenna emitters are arranged in a separate plane (or planes) above an antenna feed connecting the emitting elements to the radio circuitry. The antenna feed is positioned between the emitters and a ground plane. The antenna array may be configured to operate with both horizontal and vertical polarization. The apparatuses may be configured for low impedance mismatch and may have a high gain relative to a very small and compact overall shape.

Abstract: According to one embodiment, a coupler apparatus includes a coupling element and a ground plane. The coupling element is formed of a conductive material. The coupling element is subjected to power feeding to a reference point. The ground plane is formed of a conductive material. The ground plane faces the coupling element. The ground plane has a notch at a position facing at least a part of a portion of the coupling element except the reference point or near the position.

Abstract: A communication device for a vehicle in which an RF device in the room mirror is connected electrically to a radiator included in a shade band is disclosed. The communication device for a vehicle includes an RF device in a room mirror and a radiator disposed in a shade band and connected electrically to the RF device.

Abstract: A method and apparatus comprising a resin layer, a number of conductive elements, and a number of layers of reinforcement material. The number of conductive elements is on the resin layer. The number of conductive elements has a configuration that forms an antenna system. The number of layers of reinforcement material forms a reinforcement for a composite structure, and at least a portion of the resin layer forms a matrix for the composite structure.

Abstract: A multi-band antenna includes a ground plane, and a radiating unit including an L-shaped first radiating arm, a U-shaped second radiating arm, a feed-in arm and a coupling arm. The first and second radiating arms are connected to the ground plane, and have respective free end portions that are spaced apart from and overlap the ground plane, that face each other, and that define an opening in spatial communication with an inner space defined by the first and second radiating arms and the ground plane. The feed-in arm is disposed in the inner space between the first radiating arm and the ground plane, is connected to the ground plane, and overlaps the opening. The coupling arm is connected to the connecting segment, and overlaps the free end portions.

Abstract: A method and apparatus for routing information. A wireless network is established using a portable wireless communications node comprising a portable platform, an energy harvesting system connected to the portable platform, and a wireless communications system connected to the portable platform. The wireless communications system is configured to transfer information using radio frequency signals.

Abstract: A dual-polarization radiating element for a multiband antenna comprises a support with a high dielectric constant whose shape is roughly cylindrical, having an axis of revolution, at least a first and a second pair of dipoles printed on a first surface of the support, the dipoles of the first pair being roughly orthogonal to the dipoles of the second pair, and conductive lines, to feed each dipole, printed onto a second surface of the support. The support is placed on a flat reflector, with the cylindrical support's axis of revolution being perpendicular to the plane of the reflector.

Abstract: A handheld device is provided. The handheld device comprises a housing, a covering means, a circuit board, a battery and a near-field communication (NFC) antenna. The covering means is assembled with the housing to form a receiving space. The covering means comprises an outer surface and a through hole. The circuit board and the battery are disposed in the receiving space and electrically connected to each other. The NFC antenna comprises a metal layer and a transmission element. The metal layer is patterned on the outer surface of the covering means. The transmission element electrically couples the metal layer to the circuit board via the through hole. The NFC antenna is separated from the battery and the circuit board with a distance by the covering means.

Abstract: An antenna circuit for near-field communications includes a planar active winding, connected between a first and a second access terminal; an auxiliary winding coplanar with the active winding and connected by a first end to the first access terminal; and a tuning capacitor connected to the second end of the auxiliary winding. The turns of the active and auxiliary windings are interleaved.

Abstract: A mobile terminal according to an aspect of the invention may include: a terminal body having a ground; and conductive members embedded in the terminal body, bent at at least one point, extending in a first direction, separated from each other in directions crossing the first direction, and having a set of ends connected to form a loop, wherein a first conductive member electrically connected to a feed connection portion to feed the first conductive member and a second conductive member electrically connected to the ground to ground the second conductive member among the conductive members are separated from each other and arranged adjacent to each other to transmit and receive a radio signal while coupling occurs between the first and second conductive members extending in the first direction.

Abstract: A protection device for electrically insulating an antenna from a signal receiving device while transferring RF signals, and a system including the same are disclosed. In an embodiment, the protection device includes a first waveguide in signal communication and electrical communication with the antenna; and a second waveguide in signal communication and electrical communication with the signal receiving device. The first waveguide and the second waveguide are arranged in an end to end coaxial relationship facing one another, and the first waveguide and the second waveguide are electrically insulated from one another, such that a high voltage from accidental contact of the antenna with a power line cannot pass from the antenna to the signal receiving device. RF signals pass from the antenna to the signal receiving device through the protection device with minimal signal loss.

Abstract: A cheaper to produce, smaller and easy to drive adaptive antenna module is presented. The module comprises a signal path, an antenna, and a tuning circuit with two variable impedance elements. The tuning circuit operates over a restricted range of impedances and maintains the series resonance characteristic of the antenna.

Abstract: A multi-band antenna includes a grounding portion, a main radiating portion, and a shielding wall. The main radiating portion includes a first radiating portion having a first feed end and a second radiating portion having a second feed end. The first and second radiating portions are structurally symmetrical. The main radiating portion and the shielding wall are arranged on opposite sides of the grounding portion.

Abstract: A battery pack having a main surface and a side surface, and the external appearance thereof is an approximately rectangular parallelepiped shape. An antenna coil is provided on the main surface. The antenna coil is obtained by forming a coil conductor pattern on a flexible substrate. A substantially slit-shaped aperture is formed on the flexible substrate, and a magnetic material core is inserted into the aperture. In the antenna coil, the center of the coil aperture portion is offset from the center of the main surface of the battery pack in the outside edge portion direction of the main surface. A first end in the magnetic path direction of the magnetic material core is stretched along the side surface of the battery pack, and the second end of the magnetic material core is opened toward the center of the main surface of the battery pack.

Abstract: The present invention relates to a circuit comprising on a same board at least one antenna, a processing circuit and a cover covering the processing circuit. Said circuit comprises between the antenna and the cover at least one isolation element realized partly on the board and partly on the cover.

Abstract: Antenna designs are disclosed that exhibit both high bandwidth and efficiency. A first aspect of the invention concerns the form factor of the antenna; a second aspect of the invention concerns the ease with which the antenna is manufactured; and a third aspect concerns the superior performance exhibits by the antenna across a large bandwidth.

Abstract: An electronic device antenna may be provided with an antenna ground. An antenna resonating element may have a first end that is coupled to the ground using an inductor and may have a second end that is coupled to a peripheral conductive housing member in an electronic device. The peripheral conductive housing member may have a portion that is connected to the ground and may have a portion that is separated from the ground by a gap. The gap may be bridged by an inductor that couples the second end of the antenna resonating element to the antenna ground. The inductor may be bridged by a switch. A tunable circuit such as a capacitor bridged by a switch may be interposed in the antenna resonating element. The switches that bridge the gap and the capacitor may be used in tuning the antenna.