公开(公告)号：US20170163227A9

公开(公告)日：2017-06-08

申请号：US14016704

申请日：2013-09-03

Applicant: Samsung Electronics Co. Ltd.

Inventor： Jong-Woo LEE ,  Thomas Byung-Hak CHO ,  Jae-Hyun LIM

IPC: H03F3/45

CPC classification number: H03F3/183 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45636 ,  H03F2200/21 ,  H03F2200/555 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03F2203/45686 ,  H03F2203/45702 ,  H03G3/3005

Abstract: An analog amplifier for recovering an abnormal operation of a common-mode feedback is provided. An analog variable amplifier includes a first input transistor and a second input transistor, a first output transistor and a second output transistor, a third transistor and a fourth transistor, a first current source, a fifth transistor and a sixth transistor, and a second current source. The first input transistor and the second input transistor amplify a bias current depending on a magnitude of a first input voltage and a second input voltage. The first output transistor and the second output transistor output the amplified bias current. The third transistor and the fourth transistor receive an output voltage of the first output transistor as an input and amplifying the received output voltage. The first current source provides a predetermined current between the first output transistor and the third transistor.

公开(公告)号：US20150249435A1

公开(公告)日：2015-09-03

申请号：US14712267

申请日：2015-05-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jong-Woo LEE ,  Byung-Hak CHO ,  Jae-Hyun LIM

IPC: H03F3/183 ,  H03G3/30

CPC classification number: H03F3/183 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45636 ,  H03F2200/21 ,  H03F2200/555 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03F2203/45686 ,  H03F2203/45702 ,  H03G3/3005

Abstract: An analog amplifier is provided. The analog variable amplifier includes a first amplifier stage configured to amplify a bias current to output a first output voltage and a second output voltage that respectively depend on a magnitude of a first input voltage and a second input voltage, a second amplifier stage configured to receive the first output voltage and the second output voltage of the first amplifier stage as inputs and to amplify the received first output voltage and the second output voltage, and at least one auxiliary bias current source coupled to an electrical connection between the first amplifier stage and the second amplifier stage through which the second amplifier stage receives the first output voltage, and coupled to an electrical connection between the first amplifier stage and the second amplifier stage through which the second amplifier stage receives the second output voltage.

Abstract translation: 提供了一个模拟放大器。 模拟可变放大器包括：第一放大器级，被配置为放大偏置电流以输出分别取决于第一输入电压和第二输入电压的幅度的第一输出电压和第二输出电压;第二放大器级，被配置为接收 第一放大器级的第一输出电压和第二输出电压作为输入，并且放大所接收的第一输出电压和第二输出电压;以及至少一个辅助偏置电流源，耦合到第一放大器级与第一放大器级之间的电连接 第二放大器级，第二放大器级通过该第二放大器级接收第一输出电压，并且耦合到第一放大级与第二放大级之间的电连接，第二放大级接收第二输出电压。

公开(公告)号：US20150280656A1

公开(公告)日：2015-10-01

申请号：US14735454

申请日：2015-06-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jae-Kwon KIM ,  Jong-Woo LEE ,  Jae-Hyun LIM

IPC: H03F1/30 ,  H04B1/00 ,  H04B1/401

CPC classification number: H03F1/30 ,  H03F3/45179 ,  H03F3/505 ,  H03F2200/447 ,  H03F2203/45591 ,  H03F2203/45604 ,  H03G1/0088 ,  H03G3/001 ,  H04B1/005 ,  H04B1/401

Abstract: An analog baseband filter for a radio transceiver is provided. An analog baseband filter for a multi-mode multi-band radio transceiver includes a current-voltage conversion amplifier converting a current received at the analog baseband filter into a voltage and adjusting a gain of an output voltage of the current-voltage conversion amplifier using a plurality of resistors, and a source follower circuit compensating for temperature for the output voltage of the current-voltage conversion amplifier.

Abstract translation: 提供了一种用于无线电收发器的模拟基带滤波器。 一种用于多模式多频带无线电收发器的模拟基带滤波器包括电流 - 电压转换放大器，其将在模拟基带滤波器处接收到的电流转换为电压，并且使用以下方式调整电流 - 电压转换放大器的输出电压的增益 多个电阻器和补偿电流 - 电压转换放大器的输出电压的温度的源极跟随器电路。

公开(公告)号：US20150061764A1

公开(公告)日：2015-03-05

申请号：US14016704

申请日：2013-09-03

Applicant: Samsung Electronics Co. Ltd.

Inventor： Jong-Woo LEE ,  Thomas Byung-Hak CHO ,  Jae-Hyun LIM

IPC: H03F3/45

CPC classification number: H03F3/183 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45636 ,  H03F2200/21 ,  H03F2200/555 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03F2203/45686 ,  H03F2203/45702 ,  H03G3/3005

Abstract: An analog amplifier for recovering an abnormal operation of a common-mode feedback is provided. An analog variable amplifier includes a first input transistor and a second input transistor, a first output transistor and a second output transistor, a third transistor and a fourth transistor, a first current source, a fifth transistor and a sixth transistor, and a second current source. The first input transistor and the second input transistor amplify a bias current depending on a magnitude of a first input voltage and a second input voltage. The first output transistor and the second output transistor output the amplified bias current. The third transistor and the fourth transistor receive an output voltage of the first output transistor as an input and amplifying the received output voltage. The first current source provides a predetermined current between the first output transistor and the third transistor.

Abstract translation: 提供了用于恢复共模反馈的异常操作的模拟放大器。 模拟可变放大器包括第一输入晶体管和第二输入晶体管，第一输出晶体管和第二输出晶体管，第三晶体管和第四晶体管，第一电流源，第五晶体管和第六晶体管，以及第二电流 资源。 第一输入晶体管和第二输入晶体管根据第一输入电压和第二输入电压的幅度来放大偏置电流。 第一输出晶体管和第二输出晶体管输出放大的偏置电流。 第三晶体管和第四晶体管接收第一输出晶体管的输出电压作为输入并放大接收的输出电压。 第一电流源在第一输出晶体管和第三晶体管之间提供预定电流。

公开(公告)号：US20140242926A1

公开(公告)日：2014-08-28

申请号：US13937780

申请日：2013-07-09

Applicant: Samsung Electronics Co. Ltd.

Inventor： Jae-Kwon KIM ,  Jong-Woo LEE ,  Jae-Hyun LIM

IPC: H04B1/40

CPC classification number: H03F1/30 ,  H03F3/45179 ,  H03F3/505 ,  H03F2200/447 ,  H03F2203/45591 ,  H03F2203/45604 ,  H03G1/0088 ,  H03G3/001 ,  H04B1/005 ,  H04B1/401

Abstract: An analog baseband filter for a radio transceiver is provided. An analog baseband filter for a multi-mode multi-band radio transceiver includes a current-voltage conversion amplifier converting a current received at the analog baseband filter into a voltage and adjusting a gain of an output voltage of the current-voltage conversion amplifier using a plurality of resistors, and a source follower circuit compensating for temperature for the output voltage of the current-voltage conversion amplifier.

Abstract translation: 提供了一种用于无线电收发器的模拟基带滤波器。 一种用于多模式多频带无线电收发器的模拟基带滤波器包括电流 - 电压转换放大器，其将在模拟基带滤波器处接收到的电流转换为电压，并且使用以下方式调整电流 - 电压转换放大器的输出电压的增益 多个电阻器和补偿电流 - 电压转换放大器的输出电压的温度的源极跟随器电路。

公开(公告)号：US20140161208A1

公开(公告)日：2014-06-12

申请号：US14104440

申请日：2013-12-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jae-Hyun LIM ,  Young-Taek LEE

IPC: H04B1/04

CPC classification number: H04B1/0475

Abstract: An apparatus and a method for Direct Current (DC) offset calibration in a signal transmission device of a wireless communication system are provided. The apparatus includes a first DC calibration unit for removing a DC offset from a signal, which is output from a Current-to-Voltage Converter (IVC), by using a first DC calibration value, a Variable Gain Amplifier (VGA) for amplifying the signal output from the IVC, a second DC calibration unit for removing a DC offset from a signal output from the VGA by using a second DC calibration value, a Low Pass Filter (LPF) for filtering the signal output from the VGA, a third DC calibration unit for removing a DC offset from a signal output from the LPF by using a third DC calibration value, and a controller for determining the first DC calibration value, the second DC calibration value and the third DC calibration value.

Abstract translation: 提供了一种用于无线通信系统的信号传输设备中的直流（DC）偏移校准的装置和方法。 该装置包括：第一DC校准单元，用于通过使用第一DC校准值从用于从电流 - 电压转换器（IVC）输出的信号中去除DC偏移，用于放大 来自IVC的信号输出，用于通过使用第二DC校准值从VGA输出的信号中去除DC偏移的第二DC校准单元，用于对从VGA输出的信号进行滤波的低通滤波器（LPF），第三DC 校准单元，用于通过使用第三DC校准值从LPF输出的信号中去除DC偏移;以及控制器，用于确定第一DC校准值，第二DC校准值和第三DC校准值。