公开(公告)号：US20150349816A1

公开(公告)日：2015-12-03

申请号：US14723957

申请日：2015-05-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyung-Sun LIM ,  Seung-Chul LEE ,  Thomas Byung-Hak CHO ,  Ji-Seon PAEK ,  Jun-Seok YANG ,  Jun-Hee JUNG

IPC: H04B1/04 ,  H03F3/19 ,  H03F3/24

CPC classification number: H04B1/0475 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/217 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/111 ,  H03F2200/336 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2200/555 ,  H04B2001/0408

Abstract: A transmitter in a wireless communication system is provided. The transmitter includes a baseband signal processor for detecting an envelope signal, a supply modulator (SM) for producing power to be supplied to a power amplifier using the detected envelope signal, and the power amplifier for receiving voltage from the SM and for amplifying power of a transmit signal. The SM generates a compensation signal corresponding to switching noise generated via switching amplification, and adds the compensation signal and the switching noise. The amplifier of the wireless communication system can produce low switching noise, and the envelope tracking power amplifier can prevent reception degradation due to the noise of the supply modulator.

Abstract translation: 提供了一种无线通信系统中的发射机。 发射机包括用于检测包络信号的基带信号处理器，用于产生使用检测到的包络信号提供给功率放大器的功率的电源调制器（SM）和用于从SM接收电压并用于放大功率的功率放大器 发送信号。 SM产生对应于通过开关放大产生的开关噪声的补偿信号，并补偿补偿信号和开关噪声。 无线通信系统的放大器可以产生低开关噪声，并且包络跟踪功率放大器可以防止由于电源调制器的噪声引起的接收劣化。

公开(公告)号：US20160065142A1

公开(公告)日：2016-03-03

申请号：US14843580

申请日：2015-09-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ji-Seon PAEK ,  Seung-Chul LEE ,  Young-Hwan CHOO ,  Sung-Jun LEE ,  Jun-Hee JUNG ,  Thomas Byunghak CHO ,  Jeong-Hyun CHOI

IPC: H03F1/02 ,  H03F3/21 ,  H03F1/22 ,  H03F3/19

CPC classification number: H03F1/0227 ,  H03F1/223 ,  H03F3/193 ,  H03F3/245 ,  H03F3/3064 ,  H03F2200/408 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2203/30015

Abstract: A parallel output linear amplifier is provided that includes a transconductance amplifier configured to receive an analog input signal from an input terminal and amplify the analog input signal. The parallel output linear amplifier also includes a first pre-amplifier connected to the transconductance amplifier and operated using a floating drive voltage, and a cascode class AB amplifier connected to the first pre-amplifier and configured to provide an amplified signal to an output terminal. The parallel output linear amplifier further includes a second pre-amplifier configured connected to the transconductance amplifier and operated using the floating drive voltage, and a cascade class AB amplifier connected to the second pre-amplifier and configured to provide an amplified signal to the output terminal.

Abstract translation: 提供并行输出线性放大器，其包括跨导放大器，其被配置为从输入端子接收模拟输入信号并放大模拟输入信号。 并联输出线性放大器还包括连接到跨导放大器的第一前置放大器并使用浮动驱动电压进行操作，以及连接到第一前置放大器并被配置为向输出端子提供放大信号的共源共栅AB类放大器。 并行输出线性放大器还包括配置为连接到跨导放大器并使用浮动驱动电压进行操作的第二前置放大器，以及连接到第二前置放大器并被配置为向输出端子提供放大信号的级联AB类放大器 。