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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
发明人： Jong-Woo Lee , Thomas Byung-Hak Cho , Jae-Hyun Lim
IPC分类号： H03F3/45
CPC分类号： 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
摘要： 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：US09912311B2
公开(公告)日：2018-03-06
申请号：US15164389
申请日：2016-05-25
发明人： So-Young Kang , Thomas Byung-Hak Cho , Hee-Seon Shin , Su-Seob Ahn , Jong-Mi Lee , Min-Gyu Jo
CPC分类号： H03G1/0029 , H03F1/14 , H03F3/45183 , H03F3/4521 , H03F3/45475 , H03F3/45659 , H03F3/72 , H03F2200/153 , H03F2200/411 , H03F2203/45522 , H03F2203/45526 , H03F2203/45591 , H03G1/0088 , H03G3/001 , H03G5/28 , H03H11/1256 , H03H11/126
摘要： Provided is a reconfigurable amplifier. The reconfigurable amplifier includes a gain circuit including a gain path configured to amplify an input signal, and a feed forward circuit including a feed forward path configured to receive the input signal and perform feed forward compensation on the input signal, and a first control circuit configured to perform the feed forward compensation in a first mode by activating the feed forward path, and deactivate the feed forward path in a second mode different from the first mode.
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3.发明授权公开(公告)号：US09853652B2
公开(公告)日：2017-12-26
申请号：US15214125
申请日：2016-07-19
发明人： Jong-Woo Lee , Thomas Byung-Hak Cho
CPC分类号： H03M1/06 , H03F3/45475 , H03F3/45941 , H03F2203/45136 , H03F2203/45438 , H03M1/38
摘要： A semiconductor device is provided that includes a first chip that generates a single signal by connecting a first signal line and a second signal line, to which differential signals are respectively provided, and outputs the single signal to a third signal line. The first chip is driven by a first power supply voltage. The semiconductor device also includes a second chip comprising an analog-to-digital converter (ADC) that receives the single signal through the third signal line, compares the single signal with a reference voltage, and outputs a digital signal based on the comparison. The semiconductor device also includes a controller that monitors the digital signal and adjusts the reference voltage to be approximately equivalent to the first power supply voltage.
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4.发明授权Apparatus and method for removing noise of power amplifier in mobile communication system 有权移动通信系统功率放大器噪声去除装置及方法公开(公告)号：US09590665B2
公开(公告)日：2017-03-07
申请号：US14723957
申请日：2015-05-28
发明人： Hyung-Sun Lim , Seung-Chul Lee , Thomas Byung-Hak Cho , Ji-Seon Paek , Jun-Seok Yang , Jun-Hee Jung
CPC分类号： 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
摘要： 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.
摘要翻译： 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）以及用于从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。
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5.发明申请公开(公告)号：US20170026030A1
公开(公告)日：2017-01-26
申请号：US15164389
申请日：2016-05-25
发明人： So-Young KANG , Thomas Byung-Hak Cho , Hee-Seon Shin , Su-Seob Ahn , Jong-Mi Lee , Min-Gyu Jo
CPC分类号： H03G1/0029 , H03F1/14 , H03F3/45183 , H03F3/4521 , H03F3/45475 , H03F3/45659 , H03F3/72 , H03F2200/153 , H03F2200/411 , H03F2203/45522 , H03F2203/45526 , H03F2203/45591 , H03G1/0088 , H03G3/001 , H03G5/28 , H03H11/1256 , H03H11/126
摘要： Provided is a reconfigurable amplifier. The reconfigurable amplifier includes a gain circuit including a gain path configured to amplify an input signal, and a feed forward circuit including a feed forward path configured to receive the input signal and perform feed forward compensation on the input signal, and a first control circuit configured to perform the feed forward compensation in a first mode by activating the feed forward path, and deactivate the feed forward path in a second mode different from the first mode.
摘要翻译： 提供了一种可重构放大器。 所述可重构放大器包括增益电路，所述增益电路包括被配置为放大输入信号的增益路径，以及包括前馈路径的前馈电路，所述前馈电路被配置为接收所述输入信号并对所述输入信号执行前馈补偿;以及第一控制电路 通过激活前馈路径以第一模式执行前馈补偿，并且以与第一模式不同的第二模式停用前馈路径。
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