公开(公告)号：US20230387948A1

公开(公告)日：2023-11-30

申请号：US18188106

申请日：2023-03-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Munwoo LEE ,  Jungwoo KU ,  Youngyoon WOO ,  Dogeun EUM ,  Seonghyeon LEE

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H04B2001/0408

Abstract: An electronic device is provided. The electronic device includes a digital pre-distortion (DPD), a digital-to-analog converter (DAC), a power amplifier (PA), a first coupler obtaining a feedback signal from an output of the power amplifier, a circulator obtaining a reverse signal in which the output of the power amplifier is reflected, a transmission filter, a second coupler obtaining a filter-feedback signal from an output of the transmission filter, an antenna, an analog-to-digital converter (ADC) converting a composite signal including the feedback signal, the filter-feedback signal, and the reverse signal into a digital composite signal, a separation circuit, and a pulse inter-modulation cancellation (PIMC) circuit in which the separation circuit, based on the digital composite signal and an input signal of the DPD, obtains a digital signal of the feedback signal, a digital signal of the filter-feedback signal, and a digital signal of the reverse signal.

公开(公告)号：US20190115878A1

公开(公告)日：2019-04-18

申请号：US16090126

申请日：2017-03-24

Applicant: Samsung Electronics Co., Ltd

Inventor： Munwoo LEE ,  Youngyoon WOO ,  Martynovich PAVEL ,  Jaebum KIM ,  Donggeun LEE ,  Sungchul HONG

IPC: H03F1/32 ,  H03F3/24 ,  H04B3/23 ,  H04B1/04 ,  H04B17/10 ,  H04W88/08

Abstract: The present disclosure relates to an apparatus and a method for transmitting a signal using a power amplifier in a wireless communication system in which a transceiver comprises a digital pre-distorter configured to distort an input signal based on a distortion control value, a power amplifier configured to amplify an output signal from the digital pre-distorter, an antenna configured to transmit an output signal from the power amplifier, an echo signal canceller configured to remove an echo signal which returns to the power amplifier due to a return loss of a path between the power amplifier and the antenna, from a feedback signal obtained at an output stage of the power amplifier, and a digital pre-distortion adaptation unit configured to determine the distortion control value based on an output signal from the echo signal canceller.