Various embodiments of a multi-mode antenna are described. The antenna is preferably constructed having a first inductor coil and a second inductor coil. A plurality of shielding materials are positioned throughout the antenna to minimize interference of the magnetic fields that emanate from the coils from surrounding materials. The antenna comprises a coil control circuit having at least one of an electric filter and an electrical switch configured to modify the electrical impedance of either or both the first and second coils.

Provided is a contactless power supply antenna device that has raised power transmission efficiency while also enabling size-reduction for mounting on a wearable terminal or the like. The antenna device includes a power transmission antenna (2) and a power reception antenna (3). The power transmission antenna (2) includes: a magnetic core including two magnetic plates (21) that face each other, a magnetic material-containing connecting portion (22) that connects at least part of an end section of each of the two magnetic plates (21), and a space (23) between the two magnetic plates (21); and a power transmission coil (25) disposed on at least one of the two magnetic plates (21) at a side thereof that faces the space (23). The power reception antenna (3) includes a power reception coil (31) and is positionable in the space (23).

Provided is a contactless power supply antenna device that has raised power transmission efficiency while also enabling size-reduction for mounting on a wearable terminal or the like. The antenna device includes a power transmission antenna (2) and a power reception antenna (3). The power transmission antenna (2) includes: a magnetic core including two magnetic plates (21) that face each other, a magnetic material-containing connecting portion (22) that connects at least part of an end section of each of the two magnetic plates (21), and a space (23) between the two magnetic plates (21); and a power transmission coil (25) disposed on at least one of the two magnetic plates (21) at a side thereof that faces the space (23). The power reception antenna (3) includes a power reception coil (31) and is positionable in the space (23).

An insulating substrate including a principal surface and coil antennas disposed on the substrate and each including a coil conductor. The coil conductor includes a winding axis in a direction parallel or substantially parallel to the principal surface of the substrate. An auxiliary loop conductor that is connected to the coil conductors of the coil antennas and generates a magnetic flux that is in phase with those of the coil antennas as seen from the direction of the winding axis of the coil conductor is provided in and on the substrate.

A 3D antenna including three coil windings arranged substantially orthogonal to one another and made from electrically conductive wire and ferromagnetic antenna core with coil regions for receiving the coil windings. Winding-on points for starting to wind the wire onto the antenna core are formed as a single part with the antenna core.

A 3D antenna including three coil windings arranged substantially orthogonal to one another and made from electrically conductive wire and ferromagnetic antenna core with coil regions for receiving the coil windings. Winding-on points for starting to wind the wire onto the antenna core are formed as a single part with the antenna core.

Disclosed herein is an antenna device including a first metal layer having first and second areas, a coil pattern having first and second terminals, a first wiring pattern connected between the first area of the first metal layer and the first terminal of the coil pattern, and a second wiring pattern connected between the second area of the first metal layer and the second terminal of the coil pattern. The first metal layer, the first wiring pattern, and the second wiring pattern constitute at least a part of a loop antenna.

Disclosed herein is an antenna device including a first metal layer having first and second areas, a coil pattern having first and second terminals, a first wiring pattern connected between the first area of the first metal layer and the first terminal of the coil pattern, and a second wiring pattern connected between the second area of the first metal layer and the second terminal of the coil pattern. The first metal layer, the first wiring pattern, and the second wiring pattern constitute at least a part of a loop antenna.

A medical device is configured for diagnosis or treatment of a tissue within a body. The medical device comprises an elongate member and a position sensor. The elongate member is configured to be received within the body, and has a lumen extending between a proximal end and a distal end. The position sensor is disposed within the lumen proximate the distal end of the deformable member. The position sensor comprises a coil wound to form a central passage and configured to generate a current flow when subject to a magnetic field, and a high-permeability antenna having at least a portion disposed outside the central passage to concentrate the magnetic field into the coil and increase the current flow.

A medical device is configured for diagnosis or treatment of a tissue within a body. The medical device comprises an elongate member and a position sensor. The elongate member is configured to be received within the body, and has a lumen extending between a proximal end and a distal end. The position sensor is disposed within the lumen proximate the distal end of the deformable member. The position sensor comprises a coil wound to form a central passage and configured to generate a current flow when subject to a magnetic field, and a high-permeability antenna having at least a portion disposed outside the central passage to concentrate the magnetic field into the coil and increase the current flow.