Samsung Electronics Co., Ltd.

Kyung-Goo Moh

Sung-Woo Moon

Pyung-Woo Yeon

Myeong-Lyong Ko

Filippo Neri

A voltage converter includes a high voltage regulator, a buck converter and a dual input linear regulator unit. The high voltage regulator converts a rectified voltage to a first load voltage. The rectified voltage is rectified from an input voltage. The buck converter generates an output voltage having a first level based on the rectified voltage during a stabilizing period and provides a transition detection signal that is enabled when the output voltage transitions to the first level. The stabilizing period is successive to an initializing period. The dual input linear regulator unit receives the first load voltage, the output voltage and a reference voltage, generates a second load voltage based on the first load voltage during the initializing period, and generates the second load voltage based on the output voltage during the stabilizing period.

Voltage converter, wireless power reception device and wireless power transmission system including the same

A wireless power reception device may comprise a resonance coil configured to receive power from outside of the wireless power reception device in a magnetic resonance type; a load coil inductively coupled to the resonance coil to receive the power from the resonance coil in an electromagnetic induction type; and/or a load configured to receive the power from the load coil. The load coil may be short-circuited and/or the load coil and the load may not be connected to each other during a first interval. The load coil may not be short-circuited and/or the load coil and the load may be connected to each other during a second interval that is different from the first interval.

Wireless power reception devices

A wireless power transmission device may comprise a source coil; and/or a resonance coil inductively coupled to the source coil. The source coil may transmit power outside of the wireless power transmission device in an electromagnetic induction type during a first interval. The source coil may transmit the power to the resonance coil in the electromagnetic induction type and the resonance coil may transmit the power received from the source coil to the outside of the wireless power transmission device in a magnetic resonance type during a second interval that is different from the first interval.

Wireless power transmission devices, wireless power reception devices, wireless power transmission systems, and wireless power transmission methods

A baseband processor includes a modulating unit and a converting unit. The modulating unit generates an orthogonal frequency division multiplexing (OFDM) symbol by modulating a bit stream. The converting unit converts the OFDM symbol from a frequency domain into a time domain, and adjusts a frequency of the OFDM symbol according to a frequency hopping sequence to perform frequency hopping in a digital domain.

Baseband processor and wireless device

A single side band (SSB) mixer includes an in-phase SSB mixer unit and a quadrature-phase SSB mixer unit. The in-phase SSB mixer unit generates an in-phase output current, and includes a first transformer load in which a portion of a quadrature-phase output current flows. The quadrature-phase SSB mixer unit generates the quadrature-phase output current, and includes a second transformer load in which a portion of the in-phase output current flows. The SSB mixer may be used in a wide frequency band without degrading frequency selectivity.

Growing community of inventors

Yongin-si, South Korea

Kyung-Goo Moh