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：US20150130542A1

公开(公告)日：2015-05-14

申请号：US14488884

申请日：2014-09-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Joon-Hee LEE ,  Jong-Won CHOI ,  Young-Taek LEE ,  Byung-Hak CHO ,  Young-Gun PU

IPC: H03L5/00

CPC classification number: H03L5/00 ,  H03B5/08 ,  H03L7/00 ,  H03L7/093 ,  H03L7/099

Abstract: An electronic device and a method for control of an output amplitude of a Voltage Control Oscillator (VCO) in the electronic device is provided. The electronic device includes a first circuit configured to output a frequency signal corresponding to a control voltage, and a second circuit configured to generate control bits that control an amplitude of the frequency signal based on a comparison result between a peak voltage of the frequency signal and a reference voltage of the frequency signal.

Abstract translation: 提供了一种用于控制电子设备中的电压控制振荡器（VCO）的输出幅度的电子设备和方法。 电子设备包括：第一电路，被配置为输出对应于控制电压的频率信号，以及第二电路，被配置为基于频率信号的峰值电压与频率信号的峰值电压之间的比较结果来生成控制频率信号的幅度的控制位; 频率信号的参考电压。