Abstract: An apparatus for sensing a rotating body includes a cylindrical supporting member being connected to a rotating shaft, a unit to be detected including a first pattern portion provided in a first height region of the supporting member, and the first pattern portion including first patterns extended in a rotation direction of the rotating shaft and a second pattern portion provided in a second height region of the supporting member, extended in a rotation direction of the rotating shaft, and the second pattern portion including second patterns having an angle difference with the first patterns, and a sensor module including a first sensor disposed opposite to the first pattern portion and a second sensor disposed opposite to the second pattern portion, the first patterns and the second patterns are formed of a metallic material, and each of the first sensor and the second sensor includes a sensing coil.

Abstract: An apparatus for sensing a rotating body includes a unit to be detected including a first pattern portion having first patterns and a second pattern portion having second patterns, and configured to rotate around a shaft, a sensor module including a first sensor and a third sensor disposed opposite to the first pattern portion with the rotating shaft interposed therebetween, a second sensor and a fourth sensor disposed opposite to the second pattern portion with the rotating shaft interposed therebetween, and a rotation information calculator configured to calculate a first compensation sensing value based on a sum of a sensing value of the first sensor and a sensing value of the third sensor, and to calculate a second compensation sensing value based on a sum of a sensing value of the second sensor and a sensing value of the fourth sensor.

Abstract: A wireless power transmitter includes: a power supply configured to supply a driving power; a first power transmitter including first bridge switching elements forming a first bridge circuit, and configured to receive the driving power to transmit a first power, wherein a magnitude of a first input voltage applied to the first bridge circuit is determined by a duty of at least one of the first bridge switching elements; a second power transmitter including second bridge switching elements forming a second bridge circuit, and configured to receive the driving power to transmit a second power, wherein a magnitude of a second input voltage applied to the second bridge circuit is determined by a duty of at least one of the second bridge switching elements; and a controller configured to output first and second power transmitting control signals respectively controlling the first bridge switching elements and the second bridge switching elements.

Abstract: A wireless power transmitter includes: a first power transmitting unit including first switching elements forming a first bridge circuit, and configured to receive input DC voltage and transmit a first power by switching operations of the first switching elements; and a second power transmitting unit including second switching elements forming a second bridge circuit, and configured to receive the input DC voltage and transmit second power by switching operations of the second switching elements. The first power transmitting unit steps-up the input DC voltage according to a duty ratio of one or more of the first switching elements, and applies the stepped-up input DC voltage to the first bridge circuit. The second power transmitting unit steps-up or steps-down the input DC voltage according to a duty ratio of one or more of the second switching elements, and applies the stepped-up or stepped-down input DC voltage to the second bridge circuit.

Abstract: A power transmitter includes: a first resonator configured to wirelessly supply power to a power receiver and having an impedance that changes in response to a foreign material being proximate to the power transmitter; a second resonator having an impedance that changes in response to the foreign material being proximate to the power receiver; and controller configured to select either one of the first resonator and the second resonator in response to a wireless charging control, and to determine whether the foreign material is proximate to the power transmitter, based on a change in the impedance of the selected one of the first resonator and the second resonator.

Abstract: A wireless power transmission device including a resonant circuit magnetically coupled to a wireless power reception device and being configured to wirelessly transmit power, an alternating current (AC) generator including switches and being configured to receive a direct current (DC) voltage and to generate an AC current, according to a switching operation of the switches, to be supplied to the resonant circuit, and a variable capacitor connected to an output terminal of the AC generator and having a first capacitance, when a load state of the wireless power reception device is provided as a full load state and a second capacitance lower than the first capacitance, when the load state is provided as a light load state.

Abstract: An antenna device includes: a substrate including a base layer, a first layer disposed on one surface of the base layer, a second layer disposed on another surface of the base layer, at least one first coil pattern disposed on the first layer, and at least one second coil pattern disposed on the second layer; and a magnetic body. A first region of the substrate is disposed on one surface of the magnetic body, and a second region of the substrate is disposed on another surface of the magnetic body. The at least one first coil pattern and the at least one second coil pattern are connected to each other to form an antenna coil having a solenoid shape disposed around the magnetic body.

Abstract: A wireless communication antenna includes a solenoid coil portion including a core; and a magnetic body disposed in the core and comprising magnetic pieces arranged side by side in a direction perpendicular to or a direction parallel to a direction of a magnetic flux of the coil portion.

Abstract: A coil module includes an insulation layer; a wireless power transfer (WPT) coil disposed on a first surface of the insulation layer; and a heat dissipation pattern disposed around the WPT coil on the first surface of the insulation layer or disposed on a second surface of the insulation layer opposite the first surface, wherein a width the heat dissipation pattern is narrower than a width of the WPT coil.

Abstract: An antenna module includes a wiring part including a second antenna wiring disposed to have a spiral shape on an insulating substrate and a first antenna wiring disposed in an internal region of the second antenna wiring and disposed in a solenoid structure; a first magnetic part disposed to be inserted into the center of the solenoid structure and having at least a portion exposed externally from the wiring part; and a second magnetic part coupled to the first magnetic part.

Abstract: An apparatus for sensing a rotating body includes a cylindrical supporting member being connected to a rotating shaft, a unit to be detected including a first pattern portion provided in a first height region of the supporting member, and the first pattern portion including first patterns extended in a rotation direction of the rotating shaft and a second pattern portion provided in a second height region of the supporting member, extended in a rotation direction of the rotating shaft, and the second pattern portion including second patterns having an angle difference with the first patterns, and a sensor module including a first sensor disposed opposite to the first pattern portion and a second sensor disposed opposite to the second pattern portion, the first patterns and the second patterns are formed of a metallic material, and each of the first sensor and the second sensor includes a sensing coil.

Abstract: An apparatus for sensing a rotating body includes a unit to be detected including a first pattern portion having first patterns and a second pattern portion having second patterns, and configured to rotate around a shaft, a sensor module including a first sensor and a third sensor disposed opposite to the first pattern portion with the rotating shaft interposed therebetween, a second sensor and a fourth sensor disposed opposite to the second pattern portion with the rotating shaft interposed therebetween, and a rotation information calculator configured to calculate a first compensation sensing value based on a sum of a sensing value of the first sensor and a sensing value of the third sensor, and to calculate a second compensation sensing value based on a sum of a sensing value of the second sensor and a sensing value of the fourth sensor.

Abstract: An antenna module includes a coil part including a second antenna wiring disposed in a spiral shape on an insulating substrate and a first antenna wiring disposed in an internal region of the second antenna wiring; and a magnetic part including a second magnetic part disposed on a second surface of the insulating substrate and a first magnetic part extending from the second magnetic part, penetrating through the internal region of the second antenna wiring, and disposed on a first surface of the insulating substrate.

Abstract: An antenna module includes a coil part including a second antenna wiring formed on an insulating substrate in a spiral shape and a first antenna wiring disposed in an internal region of the second antenna wiring, and a magnetic part including a first magnetic part disposed in the internal region of a first surface of the insulating substrate and a second magnetic part disposed on a second surface of the insulating substrate.

Abstract: An electronic device includes a power module that transmits or receives power wirelessly and includes a coil portion that generates a magnetic field; and a heat radiating sheet disposed on one side of the power module. The heat radiating sheet includes line-type conductors arranged to overlap the coil portion and an area-type conductor disposed along a periphery of the line-type conductors.

Abstract: A wireless power transmitter includes: a converter including switching elements forming a bridge circuit, wherein the converter is configured to output an alternating current (AC) voltage including a frequency determined according to an operating frequency of at least one switching element among the switching elements; a resonator including an inductor and a capacitor, and configured to receive the AC voltage to wirelessly transmit power; and a controller configured to output control signals controlling the switching elements so that the converter performs a first mode operation in which an operating duty cycle is fixed and the operating frequency is varied, and an operation of the converter is switched from the first mode operation to a second mode operation in which the operating frequency is fixed and the operating duty cycle is varied, in response to the operating frequency reaching a first reference frequency.

Abstract: A wireless power transmitter includes: a converter including switching elements forming a bridge circuit and configured to output an alternating current (AC) voltage in response to control signals; a resonator including a resonant capacitor and a resonant coil, and configured to receive the AC voltage to transmit power wirelessly; and a controller configured to set a dead time at which a magnitude of the AC voltage is substantially zero in response to a signal received from a wireless power receiver.

Abstract: A coil module includes a magnetic substance plate, a first coil, and a second coil. The magnetic substance plate includes a first area having a first magnetic permeability and a second area having a second magnetic permeability. The first coil is disposed on a surface of the magnetic substance plate. The second coil is disposed on the surface of the magnetic substance plate and partially overlapping the first coil. A portion of the first coil, not overlapping the second coil, is disposed on a surface of the first area, and a portion of the second coil, not overlapping the first coil, is disposed on a surface of the second area.

Abstract: An antenna module includes an insulating substrate; and communications wiring disposed on opposite surfaces of the insulating substrate and including a spiral wiring formed by a first spiral wiring disposed on a first surface of the insulating substrate and a second spiral wiring disposed on a second surface of the insulating substrate, wherein the spiral wiring includes a plurality of coil strands spaced apart from each other and not electrically connected to each other within the spiral wiring, and the communications wiring further includes a connecting part electrically connecting the plurality of coil strands to each other outside the spiral wiring.

Abstract: An antenna device includes: a substrate including a base layer, a first layer disposed on one surface of the base layer, a second layer disposed on another surface of the base layer, at least one first coil pattern disposed on the first layer, and at least one second coil pattern disposed on the second layer; and a magnetic body. A first region of the substrate is disposed on one surface of the magnetic body, and a second region of the substrate is disposed on another surface of the magnetic body. The at least one first coil pattern and the at least one second coil pattern are connected to each other to form an antenna coil having a solenoid shape disposed around the magnetic body.