公开(公告)号：KR100413182B1

公开(公告)日：2003-12-31

申请号：KR1020010075186

申请日：2001-11-30

Applicant: 한국전자통신연구원

Inventor： 유현규 ,  이상국 ,  한선호 ,  윤용식 ,  박문양 ,  김성도 ,  김남수

IPC: H03F3/45

CPC classification number: H03G1/007 ,  H03F3/45179 ,  H03F2203/45492 ,  H03G1/0023

Abstract: An automatically gain controllable linear differential amplifier using a variable degeneration resistor is disclosed. The linear differential amplifier includes an input end, a bias current source, a load unit, a first MOS transistor and a second MOS transistor. The linear differential amplifiers of the present invention can control an amplifying gain according to an input signal and improve linearity IIP3 without needing additional power consumption caused by improving the linearity The automatically gain controllable linear differential amplifier uses NMOS/PMOS transistor so an integration process of the amplifier can be implemented more conveniently and efficiently.

Abstract translation: 公开了一种使用可变负反馈电阻的自动增益可控的线性差分放大器。 线性差分放大器包括输入端，偏置电流源，负载单元，第一MOS晶体管和第二MOS晶体管。 本发明的线性差分放大器可以根据输入信号控制放大增益并且改善线性度IIP3，而不需要由增加线性度引起的额外功耗。自动增益可控的线性差分放大器使用NMOS / PMOS晶体管， 放大器可以更加方便和高效地实现。

公开(公告)号：KR1020030044444A

公开(公告)日：2003-06-09

申请号：KR1020010075186

申请日：2001-11-30

Applicant: 한국전자통신연구원

Inventor： 유현규 ,  이상국 ,  한선호 ,  윤용식 ,  박문양 ,  김성도 ,  김남수

IPC: H03F3/45

CPC classification number: H03G1/007 ,  H03F3/45179 ,  H03F2203/45492 ,  H03G1/0023

Abstract: PURPOSE: A differential linear amplifier is provided to improve the linearity(IIP3) viewed from the input side by controlling the gain of the amplification in response to the input signal applied to the differential amplifier as well as improve the IIP3 by utilizing a poly silicon without using the polysilicon as a resistor, thereby obtaining an excellent characteristics. CONSTITUTION: A differential linear amplifier includes an input block for receiving a positive input signal and a negative input signal, a bias current source provided on one side of the input block for supplying a bias current, a pair of load blocks(110,120) provided on the other side of the input block for supplying the different level between the output signals between the positive output terminal and the negative output terminal corresponding to the positive input signal and the negative input signal, a first MOD transistor(210) connected between the bias current source and the input block for utilizing the positive input signal as a gate input and the gain control signal as a substrate bias voltage and a second MOS transistor(220) connected between the bias current source and the input block for utilizing the negative input signal as a gate input and the gain control signal as a substrate bias voltage.

Abstract translation: 目的：提供差分线性放大器，以通过控制放大器的输入信号来响应于差分放大器的输入信号来控制从输入侧观察的线性度（IIP3），并通过利用多晶硅来改善IIP3，而不需要 使用多晶硅作为电阻器，从而获得优异的特性。 构成：差分线性放大器包括用于接收正输入信号和负输入信号的输入块，设置在用于提供偏置电流的输入块的一侧上的偏置电流源，设置在该输入块上的一对加载块（110,120） 用于在与正输入信号和负输入信号相对应的正输出端和负输出端之间的输出信号之间提供不同电平的输入块的另一侧;连接在偏置电流之间的第一MOD晶体管（210） 源极和用于利用正输入信号作为栅极输入和增益控制信号作为衬底偏置电压的输入块和连接在偏置电流源和输入块之间的第二MOS晶体管（220），以将负输入信号用作 栅极输入和增益控制信号作为衬底偏置电压。

公开(公告)号：KR100334625B1

公开(公告)日：2002-08-27

申请号：KR1019970070315

申请日：1997-12-19

Applicant: 한국전자통신연구원

Inventor： 유현규 ,  이상국

IPC: H03F3/45

Abstract: PURPOSE: A differential amplifier is provided to be capable of converting a single input into a differential signal. CONSTITUTION: The first amplification means(Q11) has a collector connected to a power supply voltage(Vcc) via the first output impedance means(ZL3), an emitter connected to a current power, and a base connected to receive an input signal via an input impedance matching means(RS,RM). The second amplification means(Q12) has a collector connected to the power supply voltage via the second output impedance means(ZL4) and an emitter connected to the emitter of the first amplification means. A resistor(RB) is connected to a base of the second amplification means and has the same resistance value between the base of the first amplification means and a ground. The first output voltage(VO1) is output from the collector of the first amplification means, and the second output voltage(VO2) is output from the collector of second first amplification means.