Abstract:
An antenna apparatus according to one exemplary embodiment disclosed herein includes a first member and a second member limiting a slot, a feeding unit provided on one surface of a carrier covering the slot and configured to feed the slot, and a first radiator formed on the one surface of the carrier with being spaced apart from the feeding unit, and electrically connected to the first member, the first radiator configured to resonate together with the slot at a first frequency band and a second frequency band.
Abstract:
There is disclosed a mobile terminal including a case having a display unit coupled to a front side, a first antenna mounted in the case and comprising a first slot extended in a first direction and having a closed end and an open end, a second antenna mounted in the case and comprising a second slot extended in a second direction opposite to the extended direction of the first slot and comprising a closed end and an open end, a power supply unit mounted in the case, a first feeder supplying the power of the power supply unit to the first antenna, and a second feeder supplying the power of the power supply unit to the second antenna.
Abstract:
According to the present invention, a mobile terminal includes a main body including a front side with which a display unit is combined, a first antenna mounted on the main body, extended in a first direction and including a first slot of which one end is closed and another end is opened, a second antenna mounted on the main body, extended in a second direction corresponding to a direction opposite to the direction to which the first slot is extended and including a second slot of which one end is closed and another end is opened, a power supply unit mounted in the inside of the main body, a first feeder configured to supply power to the first antenna from the power supply unit and a second feeder configured to supply power to the second antenna from the power supply unit.
Abstract:
A cooking apparatus includes: a working coil, an inverter configured to output a resonant current to the working coil, a current detector configured to detect the resonant current and output a detection value corresponding to the resonant current, and a controller. The controller is configured to control the inverter to flow a first resonant current through the working coil, control the inverter to flow, through the working coil, a second resonant current having a frequency different from the first resonant current, and determine, based on a difference between a first detection value for the first resonant current and a second detection value for the second resonant current, whether a target object that is located adjacent to the working coil is a predetermined object.
Abstract:
A cooking apparatus includes: a receiving coil configured to receive power wirelessly, a first rectifier configured to rectify power transmitted from the receiving coil, a first DC capacitor connected to an output terminal of the first rectifier, a working coil, an inverter, a second DC capacitor connected to an input terminal of the inverter, and a filter circuit connected between the first DC capacitor and the second DC capacitor and configured to block a noise current that flows between the first DC capacitor and the second DC capacitor and that is associated with a predetermined frequency or a frequency higher than the predetermined frequency. The inverter is configured to convert power from the second DC capacitor into an alternating current and transmit the converted alternating current to the working coil.
Abstract:
A wireless power transmission apparatus includes: a transmission coil configured to transmit power to a wireless power reception apparatus, an inverter that includes a plurality of switching elements and that is configured to output a current of a predetermined frequency to the transmission coil through an operation of the plurality of switching elements, and a controller. The controller can be configured to calculate an output level of power transmitted through the transmission coil, determine a load state of the wireless power reception apparatus based on a target level of power transmitted through the transmission coil and the calculated output level, and control the inverter based on the determined load state of the wireless power reception apparatus.
Abstract:
A mobile terminal including a case; a metal plate mounted in the case; a first radiator comprising one end connected to the metal plate via a connection portion and extended from the connection portion in a first direction, the first radiator being spaced apart a preset distance from the metal plate; a first feeder connected to the first radiator and supplying power; an additional radiator; and a first switch configured to be switched on and off to connect and disconnect the additional radiator and the first feeder to and from each other.
Abstract:
A mobile terminal comprises: a terminal body having an upper part and a lower part; and an antenna device disposed on the upper part or the lower part of the terminal body, and configured to transmit and receive radio signals, wherein the antenna device comprises: a first member and a second member which form a slot of which one side is open; a feeding portion having one end connected to one of the first member and the second member such that the antenna device resonates in a first frequency band, and forming an electric field in the slot; and a feeding extension portion extending from the feeding portion such that the antenna device resonates in a second frequency band.
Abstract:
A system includes a wireless power transfer apparatus and a wireless power reception apparatus. The wireless power transfer apparatus includes a transmitting coil, an inverter including switching elements, and a first controller configured to calculate an output level of power transmitted through the transmitting coil, receive data on a target level for power transmitted through the transmitting coil from the wireless power reception apparatus, and control the inverter based on comparing the output level and the target level. The wireless power reception apparatus includes a receiving coil, a rectifier configured to rectify power transmitted from the receiving coil, a capacitor connected to the rectifier, and a second controller configured to calculate a voltage applied to the capacitor, determine the target level based on comparing the calculated voltage and a first reference voltage, and transmit the target level to the wireless power transfer apparatus.
Abstract:
According to the present invention, a mobile terminal includes a main body including a front side with which a display unit is combined, a first antenna mounted on the main body, extended in a first direction and including a first slot of which one end is closed and another end is opened, a second antenna mounted on the main body, extended in a second direction corresponding to a direction opposite to the direction to which the first slot is extended and including a second slot of which one end is closed and another end is opened, a power supply unit mounted in the inside of the main body, a first feeder configured to supply power to the first antenna from the power supply unit and a second feeder configured to supply power to the second antenna from the power supply unit.