公开(公告)号：US20130169365A1

公开(公告)日：2013-07-04

申请号：US13670016

申请日：2012-11-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang-Heung LEE ,  Seong-Il Kim ,  Dong Min Kang ,  Jong-Won Lim ,  Hyung Sup Yoon ,  Chull Won Ju ,  Jae Kyoung Mun ,  Eun Soo Nam

IPC: H03G3/00

CPC classification number: H03G1/0082 ,  H03G1/0088 ,  H03G3/3084

Abstract: Disclosed is an automatic gain control feedback amplifier that can arbitrarily control a gain even when a difference in input signal is large. The automatic gain control feedback amplifier includes: an amplification circuit unit configured to amplify voltage input from an input terminal and output the amplified voltage to an output terminal; a feedback circuit unit connected between the input terminal and the output terminal and including a feedback resistor unit of which a total resistance value is determined by one or more control signals and a feedback transistor connected to the feedback resistor unit in parallel; and a bias circuit unit configured to supply predetermined bias voltage to the feedback transistor.

Abstract translation: 公开了一种自动增益控制反馈放大器，即使当输入信号的差异大时也可以任意地控制增益。 自动增益控制反馈放大器包括：放大电路单元，被配置为放大从输入端输入的电压，并将放大的电压输出到输出端; 连接在输入端子和输出端子之间的反馈电路单元，包括反馈电阻器单元，其总电阻值由一个或多个控制信号确定，反馈晶体管并联连接到反馈电阻器单元; 以及偏置电路单元，被配置为向所述反馈晶体管提供预定的偏置电压。