Samsung Electronics Co., Ltd.

Samsung Display Co., Ltd.

Hyunseok Choi

Jooseung Kim

Hyoseok Na

Dmitry Androsov

Ju Hyun Kim

Namjun Cho

Changki Kim

Kalinina Fedosya

Masashi Tsuji

Youngmin Lee

Beom Seok Kim

Sangah Gam

Tsuyoshi Ohyama

Kitae Park

Eun Sung Lee

Seunghyun Lee

Dongil Yang

Young Jae Kang

Sanghun Sim

Jihoon Kim

Cheulhee Hahm

Fedosya Kalinina

Hye Young Kong

Joungeun Yoo

Won Joon Cho

Jungjoon Kim

Koh Kamada

Yoojin Park

Seungjun Lee

Jongin Lee

Won Cheol Jung

Hanyeop Lee

Yongjun An

Youngju Kim

Jin-San Jung

Jun-su Lim

Chulseung Pyo

Yunsu Jin

Disclosed is an electronic device comprising: a wireless communication circuit for generating an RF signal, an amplifier circuit electrically connected to the wireless communication circuit and configured to amplify the RF signal, and an antenna connected to the amplifier circuit. The amplifier circuit may comprise: a first amplifier; a second amplifier; a first transmission path connected to an output terminal of the first amplifier and the antenna; a second transmission path connected to an output terminal of the second amplifier and the first transmission path; a first variable impedance circuit located on the first transmission path and configured to change an electrical length of the first transmission path based on the frequency of the RF signal; and a second variable impedance circuit located on the second transmission path and configured to change the electrical length based on a power mode.

Electronic device comprising amplifier circuit for processing wideband RF signal

An electronic device may include a transceiver, a communication circuit, at least one antenna circuit, a processor, and a memory. The transceiver may include at least one transmission (Tx) chain and at least one reception (Rx) chain. The communication circuit may include a plurality of front ends electrically connected to the transceiver. The at least one antenna circuit may be connected to the plurality of front ends, respectively. The processor may be operatively connected to the communication circuit. The processor is configured to change the power and/or circuit driving of the at least one reception (Rx) chain on the basis of the strength of an output signal of the at least one transmission chain.

Electronic device including antenna modules and operation method thereof

A power amplification circuit may comprise a power distributor configured to receive a radio frequency (RF) signal and output a first RF signal and a second RF signal, a first power amplifier configured to receive the first RF signal from the power distributor and amplify the first RF signal based on a first bias, a second power amplifier configured to receive the second RF signal from the power distributor and amplify the second RF signal based on a second bias, an impedance matching circuit configured to receive the first RF signal amplified by the first power amplifier and the second RF signal amplified by the second power amplifier, and a protection circuit configured to identify a current input to a bias terminal of the second power amplifier and, control a magnitude of the current input to the bias terminal based on the identified input current.

Power amplification circuit including protection circuit and electronic device including power amplification circuit

An electronic device and method thereof of are provided to prevent burnout due to overcurrent. An electronic device includes a power amplifier configured to amplify a transmission signal; a battery configured to provide a bias voltage to the at least one power amplifier; and an overcurrent protection circuit configured to prevent overcurrent from flowing through the power amplifier. The overcurrent protection circuit includes a configurer configured to configure a reference current value, based on the power amplifier; a measurer configured to measure a bias current value due to the bias voltage; a comparator configured to compare the measured bias current value with the reference current value; and a controller configured to recognize overcurrent flowing through the power amplifier and control provision of the bias voltage, based on a result of the comparison.

Protection circuit in electronic device and method therefor

A monomer represented by Chemical Formula 1: wherein, in Chemical Formula 1, R, R, A, A, L, L, o, p, q, and r are the same as defined in the detailed description.

Monomer and polymer, compensation film, optical film, and display device

Communication circuitry and an electronic device including the communication circuitry are disclosed. The communication circuitry may include a first RF chain configured to output a first transmission signal in a first frequency band through a first antenna or receive a first reception signal in the first frequency band through the first antenna; a second RF chain configured to output a second transmission signal in a second frequency band through a second antenna or receive a second reception signal in the second frequency band through the second antenna; a first reception chain configured to receive a first signal in the first frequency band, which is received through the second antenna; a second reception chain configured to receive a second signal in the second frequency band, which is received through the first antenna; and a switch configured to connect the first RF chain and the second reception chain to the first antenna and connect the second RF chain and the first reception chain to the second antenna.

Communication circuitry performing communication using a plurality of frequency bands and electronic device comprising the communication circuitry

An example electronic device includes an antenna; a switching regulator; a communication chip including an amplifier, a first linear regulator operably connected to the amplifier and the switching regulator and configured to be supplied with a first voltage from the switching regulator, and a second linear regulator operably connected to the amplifier and the switching regulator and configured to be supplied with a second voltage higher than the first voltage from the switching regulator, the communication chip configured to transmit a radio-frequency signal outside of the electronic device through the antenna; and a control circuit. The control circuit is configured to produce an envelope of an input signal input to the amplifier in connection with the radio-frequency signal and to provide the produced envelope to at least one of the first linear regulator or the second linear regulator. The first linear regulator is configured to provide a third voltage corresponding to the envelope to the amplifier using the first voltage based on the envelope having a voltage in a first range. The second linear regulator is configured to provide a fourth voltage higher than the third voltage to the amplifier using the second voltage based on the voltage of the envelope being in a second range including values larger than values included in the first range.

Method and apparatus for supplying voltage to amplifier using multiple linear regulators

An electronic device includes a network monitor configured to acquire network environment information related to a radio frequency (RF) transmission signal; a transceiver configured to generate an envelope signal of the RF transmission signal; a transmission (Tx) module including a power amplifier for receiving the RF transmission signal from the transceiver and amplifying the RF transmission signal; and an envelope tracking (ET) modulator configured to receive the envelope signal from the transceiver and to provide a bias of a power amplifier to correspond to the envelope signal, wherein the ET modulator determines a magnitude of the bias of the power amplifier based on the network environment information acquired by the network monitor.

Electronic device and wireless communication system thereof

Disclosed is a voltage protection circuit for preventing power amplifier burnout in an electronic device. The electronic device includes a power amplifier (PA) configured to amplify a transmission signal, a switch configured to set a path of a signal outputted from the PA, a bias control circuit configured to control the supply of a bias current driving the PA, and a voltage protection circuit configured to provide a main control signal for turning off the PA earlier than turning off the switch based on a battery voltage providing a driving power of the electronic device, and forward the main control signal to the bias control circuit, wherein, in response to receiving the main control signal instructing to turn off the PA from the voltage protection circuit, the bias control unit stops the supply of the bias current driving the PA.

Voltage protection circuit to prevent power amplifier burnout, and electronic device having the same

A polymer being a product of reactants including a diamine and a monomer represented by Chemical Formula 1: wherein, in Chemical Formula 1, R, R, o, p, L, A, R, m, and n are the same as defined in the detailed description.

Monomer, polymer, compensation film, optical film, and display device

An apparatus and a method are provided for, in an electronic device which generates a reference signal having a reference frequency, mixes the reference signal to an input signal for transmission, and amplifies power, outputting a control signal for turning off amplifying the power, if a frequency of a signal acquired at an arbitrary point after generating the reference signal or mixing the signals before amplifying the power is out of a designated frequency band, thus preventing burnout of a power amplifier.

Apparatus for preventing component burnout in electric device and method thereof

Various embodiments disclose a method and a device. The device includes: an antenna; a switching regulator; a communication chip including an amplifier, a first linear regulator operably connected to the amplifier and the switching regulator and configured to be supplied with a first voltage from the switching regulator, and a second linear regulator operably connected to the amplifier and the switching regulator and configured to be supplied with a second voltage higher than the first voltage from the switching regulator, the communication chip configured to transmit a radio-frequency signal outside of the electronic device through the antenna; and a control circuit. The control circuit is configured to produce an envelope of an input signal input to the amplifier in connection with the radio-frequency signal and to provide the produced envelope to at least one of the first linear regulator or the second linear regulator. The first linear regulator is configured to provide a third voltage corresponding to the envelope to the amplifier using the first voltage based on the envelope having a voltage in a first range. The second linear regulator is configured to provide a fourth voltage higher than the third voltage to the amplifier using the second voltage based on the voltage of the envelope being in a second range including values larger than values included in the first range.

Disclosed is an electronic device that includes a transmission amplifier; an antenna; a circulator disposed between the transmission amplifier and the antenna; a communication module which is connected to the circulator and which is for checking a signal received through the antenna; and a processor. The processor may be set to check the signal through the communication module and adjust the frequency characteristics of the antenna based at least in part on a determination that the signal is a signal reflected from the antenna.

Electronic device for controlling communication circuit on basis of signal received from antenna

Growing community of inventors

Anyang-si, South Korea

Hyunseok Choi