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Patent Agency Ranking
公开(公告)号：US09197174B2
公开(公告)日：2015-11-24
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
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。
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公开(公告)号：US09356563B2
公开(公告)日：2016-05-31
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
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.
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3.发明授权公开(公告)号：US09264079B2
公开(公告)日：2016-02-16
申请号：US14104440
申请日：2013-12-12
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jae-Hyun Lim , Young-Taek Lee
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。
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公开(公告)号：US09866189B2
公开(公告)日：2018-01-09
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.
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公开(公告)号：US09871492B2
公开(公告)日：2018-01-16
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
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.
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