Inventor

LEE KWANG-CHUN

KR45 patents

⚠️ This page may combine multiple inventors who share the name “LEE KWANG-CHUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LEE KWANG-CHUN

KOREA ELECTRONICS TELECOMM

Bandgap reference voltage generator

Antenna matching device and transceiver having the same

Stub printed dipole antenna (SPDA) having wide-band and multi-band characteristics and method of designing the same

PLL apparatus for OFDM system having variable channel bands and operating method thereof

Lock detecter and clock generator having the same

Delta-sigma modulator and transmitter including the same

Apparatus for controlling duty ratio of signal

Pre-distortion apparatus of power amplifier and method thereof

Wired MIMO link tester

Apparatus and method for separating transmit and receive signals for time division duplexing radio system

Apparatus and method for measuring bi-directional radio channel having multiple antenna

Transmitting apparatus of communication system

Device for compensating radio frequency distortion in orthogonal frequency division multiplexing transmission system and method thereof

Apparatus and method for compensating carrier feedthrough in quadrature modulation system

Windmill-shaped loop antenna having parasitic loop antenna

Transmitting/receiving apparatus of wideband wireless channel apparatus using multiple carriers

ELECTRONICS & TELECOMMUNICATIONS RES INST

Amplifier for reusing current by using transformer and method thereof

Dual-polarized antenna for mobile communication base station

Boost DC-DC converter using DSM, duty controller for boost DC-DC converter, and method for configuring duty controller

Plasma antenna

LG ELECTRONICS INC

Symbol color compensating method for color display system

Color picture quality compensation circuit and related control method thereof

Maximum likelihood symbol timing estimator

LEE SUNG-JUN

Calibration method for Tx/Rx path characteristic of channel sounder

Method for measuring variable bandwidth wireless channel and transmitter and receiver therefor

Method for measuring variable bandwidth wireless channel and transmitter and receiver therefor

PARK BONG-HYUK

Dual-band wideband local oscillation signal generator

Controlled-gain wideband feedback low noise amplifier

KIM JOON-HYUNG

Apparatus and method for amplifying signal and wireless transmitter using the same

Radio frequency calibration apparatus and method for multi-antenna mobile communication system

KIM SEONG-MIN

Gain control apparatus and method in receiver of multiband OFDM system

Apparatus and method for controlling power in mobile communication system

ELECT & TELECOMM RESEARCH INST

High frequency transceiver

Apparatus and method for generating differential signal, and transmission apparatus and method having the same

KIM TAE-JOONG

Method and apparatus for supporting discontinuous operation of base station in wireless communication system and control system thereof

JANG SEUNGHYUN

CMOS variable gain amplifier

KIM YOUNG HOON

Predistorter for compensating for nonlinear distortion and method thereof

KWON HEON-KOOK

Wireless transceiver system for supporting dual mode

JO GWEON DO

Method for transmitting signal of orthogonal frequency division multiplexing type, and apparatus applied to the same

KIM JOON HYUNG

Bias modulation apparatus, and apparatus and method for transmitting signal for wideband mobile communication using the same

SAMSUNG ELECTRO MECH

Method of manufacturing lens and lens manufactured using the same

KANG BYUNG-SU

Repeating apparatus and method in wireless communication system

YU CHANG WAHN

Apparatus and method for controlling distortion signal and system by using the same

JUNG JAE-HO

Apparatus and method for controlling gain of polar transmitter

JUNG JAE HO

Automatic gain control device, signal receiving apparatus, and signal receiving method