A near field communication (NFC) antenna includes a carrier having a disk including a first surface and a second surface. The disk surrounds a central bore. The central bore is open through the disk between a top of the carrier and a bottom of the carrier. The NFC antenna includes an antenna circuit on the disk. The antenna circuit includes a first pad and a second pad electrically connected to the first pad. The NFC antenna includes an electronic component at the first surface of the disk and coupled to the first pad. The NFC antenna includes an antenna element coupled to the second surface of the disk. The antenna element includes a conductor arranged as an RF coil. The RF coil extends along the disk and surrounds the central bore. An end of the RF coil is coupled to the second pad.

An antenna module according to an embodiment of the present disclosure enables the size of a wireless communication terminal to be reduced by the implementation, as a first antenna formed by an MID method and a second antenna formed on an FPCB, of the antenna module used in the wireless communication terminal. The antenna module is capable of performing a plurality of communication functions through a single antenna module by enabling the first antenna to function as a near-field communication (NFC) antenna and the second antenna to function as a magnetic secure transmission (MST) antenna.

An electronic device includes a housing at least partially comprising a metal-material portion, a slit formed in the housing to traverse the metal-material portion along a first direction, and a radiating member, at least a portion is positioned on the slit. The radiating member includes a substrate, a first loop coil pattern formed on a first surface of the substrate, a second loop coil pattern formed on a second surface of the substrate that is opposite the first surface, a connection pattern formed on the first surface of the substrate and connected to each of the first loop coil pattern and the second loop coil pattern, and a bridge pattern formed on the second surface of the substrate and extending in a second direction intersecting the first direction. The bridge pattern bypasses the connection pattern, and is combined with the first loop coil pattern to form a loop coil antenna.

An antenna device incorporated in an electronic apparatus and communicating with an external device via an electromagnetic field signal, including: an antenna coil inductively coupled to the external device and provided by winding around a conducting wire so conducting wires opposing in width direction via an opening will be close together; and a sheet-like conductor at a surface of the antenna coil opposite a surface of the antenna coil opposing the external device, wherein the coil is divided into two parts, i.e. one side part wherein the conducting wire is wound around in one direction and other side part wound in other direction, via a center line longitudinally traversing the opening, and the conductor is configured with a conductor side opening overlapped only with the other side part of the antenna coil, and a slit formed between the conductor side opening and any outer edge of the sheet-like conductor.

A vehicle entry device is designed to equip a vehicle and may include: a housing defining a cavity and adapted to be fixed to the vehicle; and an electronics module disposed in the cavity, including: a printed circuit board; an antenna connected to the printed circuit board and configured to capture a NFC signal, wherein the antenna includes windings directly arranged on the printed circuit board; an NFC receiver connected to the printed circuit board, in communication with the antenna and configured to receive the NFC signal from the antenna; and a processing element connected to the printed circuit board, in communication with the NFC receiver and configured to provide a control signal to a control system equipping the vehicle, based on the NFC signal transmitted by the NFC receiver, said control signal allowing access to the vehicle. A vehicle trim component may be equipped with such vehicle entry device.

A communication device includes a first near field communication (NFC) antenna configured to have a first resonance frequency, and a metal chassis forming part of an outer surface of the communication device. The metal chassis forms an auxiliary antenna, where the auxiliary antenna is configured to be powered by the first NFC antenna by electromagnetic induction and is also configured to have a resonance frequency substantially equal to the first resonance frequency.

An electronic device such as a wristwatch may have a housing with metal portions such as metal sidewalls. The housing may form an antenna ground for an antenna. An antenna resonating element for the antenna may be formed from a stack of capacitively coupled component layers such as a display layer, touch sensor layer, and near-field communications antenna layer at a front face of the device. An additional antenna may be formed from a peripheral resonating element that runs along a peripheral edge of the device and the antenna ground. A rear face antenna may be formed using a wireless power receiving coil as a radio-frequency antenna resonating element or may be formed from metal antenna traces on a plastic support for light-based components.

According to various embodiments of the present disclosure, an electronic device may include a housing, a conductive pattern that is arranged within the housing and is formed to generate a magnetic field, a plate that forms at least a part of a first surface of the housing and includes a material that at least partially transmits the magnetic field generated by the conductive pattern, and a communication circuit that is configured to transmit at least one transaction information to an external device by using the conductive pattern. The conductive pattern may include a first end that is electrically connected to the communication circuit, a second end that is electrically connected to the communication circuit, and a coil that is connected between the first end and the second end and includes a plurality of turns that are substantially parallel to a surface of the plate.

Aspects of the present disclosure are directed to an antenna, various implementations and methods therefor. Various embodiments are amenable to implementation with a receiver circuit that harvests power using energy from a radio frequency (RF) signal received, and a near-field communication (NFC) circuit. A first antenna collects and presents the RF signal to the receiver circuit, and a second antenna communicates NFC signals for the NFC circuit using an antenna portion shared with the first antenna.

An attachable booster antenna attachable to a coil antenna, includes a body; and an antenna including a multiple resonant antennas arrayed on the body, with each resonant antenna including an insulator layer having first and second surfaces; and first and second loop antennas disposed on the first and second surfaces, respectively, so as to confront each other via the insulator layer. Moreover, the first and second loop antennas each having an opening that discontinue a part of a loop and are arranged such that a closed loop is defined by at least a part of the first loop antenna and at least a part of the second loop antenna in a transparent plane viewed from a normal direction of the insulator layer. Furthermore, in the plan view of the insulator layer, the opening of the first and second loop antennas and the opening of the coil antenna overlap each other.