Abstract: Disclosed is a wireless power receiver that controls a level of a communication signal. A wireless power receiver according to an embodiment includes a resonator for receiving wireless power, a rectifier for converting an alternating current power received from the resonator to a direct current power and outputting a rectifier output voltage, a switch for receiving a communication signal and controlling a rectifier output voltage through switching, and a regulator for adjusting a voltage change of a rectifier output voltage by modulating a communication signal.

Abstract: Provided are a communication device and an electronic device each having a protective function. In one embodiment, the communication device includes a transceiving device configured to transmit or receive a signal, a communication circuit configured to be selectively connected to the transceiving device, and a wireless power input detector configured to protect the communication circuit from a wireless power signal by detecting whether the signal is the wireless power signal which is input for charging and generating a control signal for selectively disconnecting the communication circuit from the transceiving device.

Abstract: Provided is a wireless power receiving unit with a self-regulation rectifier. In one embodiment, the wireless power receiving unit includes a resonator configured to receive wireless power; and a self-regulation rectifier unit including a rectifier configured to apply a rectifier output voltage to a load by converting alternating-current (AC) power received from the resonator into direct-current (DC) power, and a switching device located at a rear end of the rectifier and configured to self-regulate the rectifier output voltage.

Abstract: A swing regulated gate driver apparatus is provided. The swing regulated gate driver apparatus according to one embodiment includes a regulator configured to regulate a power voltage of a gate driver to a regulator output voltage at a predetermined level, and a gate driver configured to apply a variable swing output voltage between a ground voltage and the regulator output voltage to a receiver element to drive the receiver element.

Abstract: Disclosed are a zero voltage switching control device of an amplifier, and a wireless power transmission device. The zero voltage switching control device, according to one embodiment of the present invention, comprises: a switch voltage detection unit which, when a first switch of an amplifier is turned on, detects a drain voltage and generates a switching voltage; an error amplification unit which receives the switching voltage as an input and amplifies an error by comparing the switching voltage with a reference voltage; a loop filter which receives an output voltage of the error amplification unit as an input, and outputs a control voltage; and a duty control unit which, according to the control voltage, controls a duty of a first switch driving signal so that the first switch undergoes zero voltage switching.

Abstract: A dual band wireless power reception unit is disclosed. The wireless power reception unit according to one embodiment comprises: a first resonator; a second resonator connected to the first resonator in parallel; a single rectifier having, as an input, a node in which outputs of the first resonator and the second resonator are connected to each other in parallel; at least one switch having a first output, a second output, and an input, wherein the second output is connected to the ground; at least one capacitor connected to the second resonator in parallel, and of which one terminal is connected to the first output of the switch and the other terminal is connected to the rectifier input; and a frequency sensor sensing an input frequency from the rectifier input, and of which an output is connected to the input of the switch.

Abstract: Disclosed are an apparatus for protecting a wireless communication device and a wireless communication device comprising the same. The protection apparatus according to one embodiment comprises: a determination unit for detecting a power supply voltage of a wireless communication device for wirelessly transmitting and receiving a signal by generating a magnetic field or reacting therewith, and determining a wireless charging state from the outside when an increase in the power supply voltage, which is greater than or equal to a preset threshold, is detected; and a protection unit for protecting the wireless communication device from a power signal for wireless charging when the wireless charging condition is determined through the determination unit.

Abstract: A wireless power transfer standard selector of a power receiving device and a method therefor are disclosed. A wireless power transfer standard selector according to one embodiment comprises: a frequency sensor for sensing an input frequency of a rectifier; a boot attempt counter for counting and storing the number of bootings in which an output voltage of a power converter is generated and then disappears; and a selection unit for selecting a wireless power transfer standard method by using the input frequency sensed through the frequency sensor and/or the number of bootings counted through the boot attempt counter.

Abstract: A wireless power receiver is disclosed. The wireless power receiver comprises: a resonance tank for receiving magnetic resonance-type wireless power; a rectifier including a diode bridge and a first switch connected to both ends of any one diode for forming the diode bridge, so as to rectify wireless power received by the resonance tank and supply the rectified wireless power to a load; and a controller controlling the first switch so as to operate the rectifier as a full-wave rectifier or a half-wave rectifier.

Abstract: Disclosed are a single antenna-based wireless charging and near field communication control apparatus and a user terminal therefor. A single antenna-based wireless charging and near field communication control apparatus according to one embodiment comprises: a switch control unit for detecting a resonance frequency from an input signal of a rectifier in a power receiver and determining whether the detected resonance frequency is a first frequency for wireless charging using a single antenna or a second frequency for near field communication using a single antenna, to generate a control signal; and a switch which is turned on/off for wireless charging or near field communication according to the received control signal from the switch control unit.

Abstract: Disclosed are an apparatus for protecting a wireless communication device and a wireless communication device comprising the same. The protection apparatus according to one embodiment comprises: a determination unit for detecting a power supply voltage of a wireless communication device for wirelessly transmitting and receiving a signal by generating a magnetic field or reacting therewith, and determining a wireless charging state from the outside when an increase in the power supply voltage, which is greater than or equal to a preset threshold, is detected; and a protection unit for protecting the wireless communication device from a power signal for wireless charging when the wireless charging condition is determined through the determination unit.

Abstract: Disclosed are a single antenna-based wireless charging and near field communication control apparatus and a user terminal therefor. A single antenna-based wireless charging and near field communication control apparatus according to one embodiment comprises: a switch control unit for detecting a resonance frequency from an input signal of a rectifier in a power receiver and determining whether the detected resonance frequency is a first frequency for wireless charging using a single antenna or a second frequency for near field communication using a single antenna, to generate a control signal; and a switch which is turned on/off for wireless charging or near field communication according to the received control signal from the switch control unit.

Abstract: A wireless power transfer standard selector of a power receiving device and a method therefor are disclosed. A wireless power transfer standard selector according to one embodiment comprises: a frequency sensor for sensing an input frequency of a rectifier; a boot attempt counter for counting and storing the number of bootings in which an output voltage of a power converter is generated and then disappears; and a selection unit for selecting a wireless power transfer standard method by using the input frequency sensed through the frequency sensor and/or the number of bootings counted through the boot attempt counter.

Abstract: Disclosed are a near field communication module protection apparatus using a magnetic field, and a portable terminal thereof. The near field communication module protection apparatus according to one embodiment of the present invention comprises: a determination unit for determining whether a power receiving unit is in a state of receiving a power signal from a power transmitting unit so as to perform wireless charging; and a protection unit for protecting a near field communication module by blocking the transmission of the power signal to the near field communication module when the state in which the power signal is received is determined by the determination unit.

Abstract: A wireless power receiver is disclosed. The wireless power receiver comprises: a resonance tank for receiving magnetic resonance-type wireless power; a rectifier including a diode bridge and a first switch connected to both ends of any one diode for forming the diode bridge, so as to rectify wireless power received by the resonance tank and supply the rectified wireless power to a load; and a controller controlling the first switch so as to operate the rectifier as a full-wave rectifier or a half-wave rectifier.

Abstract: A dual band wireless power reception unit is disclosed. The wireless power reception unit according to one embodiment comprises: a first resonator; a second resonator connected to the first resonator in parallel; a single rectifier having, as an input, a node in which outputs of the first resonator and the second resonator are connected to each other in parallel; at least one switch having a first output, a second output, and an input, wherein the second output is connected to the ground; at least one capacitor connected to the second resonator in parallel, and of which one terminal is connected to the first output of the switch and the other terminal is connected to the rectifier input; and a frequency sensor sensing an input frequency from the rectifier input, and of which an output is connected to the input of the switch.