The present disclosure is applicable to the technical field of near field communication, and in particular, provides an NFC antenna-integrated touch screen, a terminal and a near field communication method thereof. The touch screen comprises a substrate, the substrate having a touch sensing region, a touch sensing electrode pattern being arranged in the touch sensing region; wherein a single-turn conductive wire is arranged on an outer side of the touch sensing region, the conductive wire being connected to an external near field communication manager as a screen antenna for near field communication.

The invention consists of a novel energy harvesting antenna designed to receive radiation at frequencies of interest at high levels of efficiency and efficacy, and high power density. The antenna comprises what may be thought of as a flattened figure-eight (topologically a flattened-torus) comprising two or more overlapping conductive coils covered with and separated by thin, high-dielectric polymer materials. The two outputs of the device are connected to two points of the antenna that are at largely opposite points of phase, such that at any given time the voltage at these points (with respect to a ground at the center of the antenna) is of opposite polarity and of a maximal magnitude. The two coils formed by the figure-eight of the antenna will have opposite voltages impressed upon them, as well as additively summing the amperages at the output, due to the geometry of the device. Furthermore, the coils formed are also able to function inductively. Additionally, when the aforementioned overlapping conductive coils are separated by thin, ferroelectric or ferromagnetic polymer materials, Q is increased and the antenna gains further capability to harvest electrostatic and electromagnetic field energy.

An antenna device is formed by winding a conductive wire around a magnetic member unit, and in which the magnetic member unit comprises a plurality of magnetic-member individual pieces.

An electronic card with biometric authentication function includes a communication antenna for short-range wireless communication, a wireless communication IC, a receiving coil, a resonant capacitor, a rectifying and smoothing circuit, a biometric sensor, and a biometric authentication circuit. The communication antenna and the receiving coil respond to a magnetic field in the same frequency band for the short-range wireless communication. The wireless communication IC performs short-range wireless communication. The receiving coil receives power from the magnetic field in the same frequency band for the short-range wireless communication. The biometric authentication circuit causes the biometric sensor to operate by using the power received from the receiving resonant circuit. The communication antenna and the receiving coil share electromagnetic field energy resonating in the same frequency band for the short-range wireless communication, the electromagnetic field energy being shared because of magnetic coupling between the communication antenna and the receiving coil.

An RFID system (200) includes an RFID reader (202), an antenna array (204) and a length compensation unit (215). The RFID reader (202) is configured to interrogate RFID antennas. The antenna array (204) includes two or more RFID antennas (206) connectable to the RFID reader (202) via a series of cable links (208). Each RFID antenna (206) is associated with a respective cable link (208), and each cable link (208) has a cable length. The length compensation unit (215) is associated with each RFID antenna (206), and is configured to adjust a total cable length between the RFID reader (202) and a respective RFID antenna (206) to be an effective cable length.

A short-range wireless communication device includes a receiving circuit, a power-receiving circuit, a short-range wireless communication IC, a rectifier circuit, and a load circuit. The receiving circuit and the power-receiving circuit have a common circuit portion composed of a coil, a capacitor, and a capacitor. The coil and the capacitor constitute a first parallel resonance circuit, and the coil, the capacitor, and the capacitor constitute a second parallel series resonance circuit. The first parallel resonance circuit and the second parallel series resonance circuit function as impedance adjusting circuits, an output impedance of the receiving circuit is adjusted to be higher than or equal to a first predetermined value for realizing load modulation and an output impedance of the power-receiving circuit is adjusted to be lower than or equal to a second predetermined value for realizing power supply, and operations of the receiving circuit and the power-receiving circuit are realized.

A short-range wireless communication device includes a receiving circuit, a power-receiving circuit, a short-range wireless communication IC, a rectifier circuit, and a load circuit. The receiving circuit and the power-receiving circuit have a common circuit portion composed of a coil, a capacitor, and a capacitor. The coil and the capacitor constitute a first parallel resonance circuit, and the coil, the capacitor, and the capacitor constitute a second parallel series resonance circuit. The first parallel resonance circuit and the second parallel series resonance circuit function as impedance adjusting circuits, an output impedance of the receiving circuit is adjusted to be higher than or equal to a first predetermined value for realizing load modulation and an output impedance of the power-receiving circuit is adjusted to be lower than or equal to a second predetermined value for realizing power supply, and operations of the receiving circuit and the power-receiving circuit are realized.

Disclosed are a near field communication (NFC) antenna and an NFC communication apparatus for a mobile terminal. The NFC antenna includes a substrate; a ferrite, disposed on the substrate; and a first flexible printed circuit (FPC) antenna, disposed on the ferrite and including a first end and a second end.

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.

A housing assembly for a terminal and a terminal are provided. The housing assembly includes a housing, an antenna radiator and a ferrite. The antenna radiator is positioned at an outer face of the housing, and has a first orthographic projection region on the outer face. The ferrite is arranged on an inner face of the housing, and has a second orthographic projection region on the outer face. The first orthographic projection region is located in the second orthographic projection region.