公开(公告)号：KR1020140107881A

公开(公告)日：2014-09-05

申请号：KR1020130022033

申请日：2013-02-28

Applicant: 숭실대학교산학협력단

Inventor： 박창근 ,  윤재혁 ,  이철우 ,  강인성

IPC: H03F3/45

CPC classification number: H03F3/45183 ,  H03F1/56 ,  H03F3/45179 ,  H03F2200/213 ,  H03F2200/216 ,  H03F2200/222

Abstract: The present invention relates to a differential amplifier using a single input signal. The differential amplifier using a single input signal according to the present invention comprises first through third transistors. The first transistor includes a first terminal connected to a first terminal of a first source, and a second terminal connected to a second source, which supplies a voltage lower than that of the first source, receives an input signal through a third terminal, and generates an amplified signal with a phase opposite to that of the input signal through the first terminal. The second transistor includes a first terminal connected to the first terminal of the first transistor, and a second terminal connected to the second terminal of the first transistor. The third transistor includes a first terminal connected to a second terminal of the first source and the a third terminal of the second transistor, a second terminal connected to the second source, and a third terminal connected to the first transistor and the first terminal of the second transistor. As such, according to the invention, a balun used for an input terminal matching is removed, such that circuit size is reduced, a thermal noise is decreased, and a phase difference and a magnitude difference, which are generated while the single is converted to the differential signal, are minimized.

Abstract translation: 本发明涉及使用单个输入信号的差分放大器。 根据本发明的使用单个输入信号的差分放大器包括第一至第三晶体管。 第一晶体管包括连接到第一源的第一端子的第一端子和连接到第二源极的第二端子，其提供比第一源极低的电压，通过第三端子接收输入信号，并且产生 具有与通过第一端子的输入信号的相位相反的相位的放大信号。 第二晶体管包括连接到第一晶体管的第一端子的第一端子和连接到第一晶体管的第二端子的第二端子。 第三晶体管包括连接到第一源的第二端子和第二晶体管的第三端子的第一端子，连接到第二源极的第二端子和连接到第一晶体管的第三端子和与第一晶体管的第一端子连接的第三端子， 第二晶体管。 因此，根据本发明，去除了用于输入端子匹配的平衡 - 不平衡变换器，使得电路尺寸减小，热噪声降低，以及在将单个转换成单个时产生的相位差和幅度差异 差分信号被最小化。

公开(公告)号：KR101469753B1

公开(公告)日：2014-12-05

申请号：KR1020130022033

申请日：2013-02-28

Applicant: 숭실대학교산학협력단

Inventor： 박창근 ,  윤재혁 ,  이철우 ,  강인성

IPC: H03F3/45

Abstract: 본발명은단일입력신호를이용한차동증폭기에관한것이다. 본발명에따른단일입력신호를이용한차동증폭기는, 단일입력신호를이용한차동증폭기는, 제1단이제1 전원의제1단과연결되며, 제2단이상기제1 전원보다낮은전압을공급하는제2 전원과연결되고, 제3단을통하여입력신호를인가받아상기제1단을통해서상기입력신호와반대위상의증폭된신호를출력하는제1 트랜지스터; 제1단이상기제1 트랜지스터의제1단과연결되고, 제2단이상기제1 트랜지스터의제2단과연결되는제2 트랜지스터; 및제1단이상기제1 전원의제2단및 상기제2 트랜지스터의제3단과연결되고, 제2단이상기제2 전원과연결되며, 제3단이상기제1 트랜지스터및 제2 트랜지스터의제1단에연결되는제3 트랜지스터를포함한다. 이와같이, 본발명에따르면입력단매칭에이용되는발룬을제거하여회로의면적및 열잡음발생을줄일수 있고, 단일신호가차동신호로변환되는과정에서발생하는위상차와진폭차를최소화할수 있다.