In accordance with the present disclosure a hearing instrument is provided. The hearing instrument comprises a wireless communication unit for wireless communication, a speaker interconnected with the wireless communication unit and being configured to provide an output audio signal, a battery configured to supply power to the hearing instrument, a filter circuit interconnecting the battery and a power management circuit of the hearing instrument, the wireless communication unit being interconnected with the battery, the battery being configured for emission and reception of an electromagnetic field having an RF wavelength. The filter circuit is configured to de-couple the battery and the power management circuit at frequencies above 3 MHz and configured to connect the battery to the power management circuit at frequencies below 300 kHz.

The antenna system includes: an upper frame, including a feeding point, a ground point, and a connection ground, wherein the ground point is arranged between the feeding point and the connection ground; system ground; feed source; matching network, including a first-order band elimination filter and a first capacitor that are connected in series; and first inductor. The upper frame is disposed at one side periphery of the system ground, and a clearance region is formed between the system ground and the upper frame. The feed source is connected to the feeding point through the matching network, the ground point is connected to the system ground through the first inductor, and the connection ground is connected to the system ground, so as to form a GPS antenna, a WIFI 2.4G antenna and a WIFI 5G antenna.

The antenna system includes: an upper frame, including a feeding point, a ground point, and a connection ground, wherein the ground point is arranged between the feeding point and the connection ground; system ground; feed source; matching network, including a first-order band elimination filter and a first capacitor that are connected in series; and first inductor. The upper frame is disposed at one side periphery of the system ground, and a clearance region is formed between the system ground and the upper frame. The feed source is connected to the feeding point through the matching network, the ground point is connected to the system ground through the first inductor, and the connection ground is connected to the system ground, so as to form a GPS antenna, a WIFI 2.4G antenna and a WIFI 5G antenna.

A device assembly applied to a mobile terminal and a mobile terminal are provided. The device assembly includes a fingerprint assembly The fingerprint assembly includes a fingerprint tray, a fingerprint module, and a conductive assembly. The fingerprint tray is electrically connected to a ground of a circuit board of the mobile terminal. The fingerprint module is disposed above the fingerprint tray. The conductive assembly is disposed between the fingerprint tray and fingerprint module.

An automatically tunable mobile antenna is provided with toroidal inductors connected in series between the antenna feed point and a whip and a shunt inductor to ground at the RF input, with the inductors forming an L network impedance matching circuit having values which are in a binary sequence and which are selectively added to impedance match the whip to the output impedance of a transmitter.

An automatically tunable mobile antenna is provided with toroidal inductors connected in series between the antenna feed point and a whip and a shunt inductor to ground at the RF input, with the inductors forming an L network impedance matching circuit having values which are in a binary sequence and which are selectively added to impedance match the whip to the output impedance of a transmitter.

A method for resonating a conductive structure as an antenna comprising: connecting a radio frequency (RF) resonator to a transceiver, wherein the RF resonator has a conductive layer; attaching the conductive layer of the resonator to the conductive structure at a given location; balancing the impedance of the transceiver with the impedance of the conductive structure at the given location; and receiving and radiating electromagnetic waves through the conductive structure at an operating frequency of the transceiver, wherein the conductive structure has a dimension of at least one-half wavelength of the operating frequency of the transceiver.

A method for resonating a conductive structure as an antenna comprising: connecting a radio frequency (RF) resonator to a transceiver, wherein the RF resonator has a conductive layer; attaching the conductive layer of the resonator to the conductive structure at a given location; balancing the impedance of the transceiver with the impedance of the conductive structure at the given location; and receiving and radiating electromagnetic waves through the conductive structure at an operating frequency of the transceiver, wherein the conductive structure has a dimension of at least one-half wavelength of the operating frequency of the transceiver.

A dipole antenna is provided, which may include a substrate, a first radiator and a second radiator disposed thereon. The substrate may include a first metal layer and a second metal layer; the first metal layer may include a feed point connected to the signal wire of a coaxial cable; the second metal layer may include a ground point connected to the ground layer of the coaxial cable. The first radiator may include a first planar connection part and a first solid radiating part; the first planar connection part may be disposed on one end of the first solid radiating part and connected to the first metal layer. The second radiator may include a second planar connection part and a second solid radiating part; the second planar connection part may be disposed on one end of the second solid radiating part and connected to the second metal layer.

A dipole antenna is provided, which may include a substrate, a first radiator and a second radiator disposed thereon. The substrate may include a first metal layer and a second metal layer; the first metal layer may include a feed point connected to the signal wire of a coaxial cable; the second metal layer may include a ground point connected to the ground layer of the coaxial cable. The first radiator may include a first planar connection part and a first solid radiating part; the first planar connection part may be disposed on one end of the first solid radiating part and connected to the first metal layer. The second radiator may include a second planar connection part and a second solid radiating part; the second planar connection part may be disposed on one end of the second solid radiating part and connected to the second metal layer.