公开(公告)号：KR1020120136465A

公开(公告)日：2012-12-20

申请号：KR1020110055411

申请日：2011-06-09

Applicant: 한화시스템 주식회사

Inventor： 김영제 ,  박종훈 ,  오진식 ,  조형원 ,  윤석호 ,  강승구 ,  조정일

IPC: H03M1/18

CPC classification number: H03M1/18 ,  H03M1/0609 ,  H03M2201/119 ,  H03M2201/6135 ,  H03M2201/6381

Abstract: PURPOSE: A two-step analog digital mixed automatic gain controller and an automatic gain control method using the same are provided to rapidly control a gain value in a desired range using a course AGC(automatic gain control). CONSTITUTION: An ADC(200) converts an inputted analog signal into a digital signal. A coarse AGC(300) measures an envelope of the digital signal outputted from the ADC. The coarse AGC reduce the gain as much as a gain attenuation coefficient. A fine AGC(400) measures the received signal strength of the envelope in response to a mode control signal outputted from the coarse AGC. The fine AGC fine-adjusts the gain according to a second threshold value and the difference of received signal strength which is measured. A DAC(500) outputs a decibel value for the gain. A VGA(100) linearly applies the decibel value of the gain and supplies the decibel value as an analog signal inputted to the ADC.

Abstract translation: 目的：提供两步模拟数字混合自动增益控制器和使用其的自动增益控制方法，以使用课程AGC（自动增益控制）快速控制所需范围内的增益值。 构成：ADC（200）将输入的模拟信号转换为数字信号。 粗略的AGC（300）测量从ADC输出的数字信号的包络。 粗略的AGC减小增益与增益衰减系数一样多。 精细AGC（400）响应于从粗略AGC输出的模式控制信号来测量包络的接收信号强度。 精细AGC根据第二阈值和所测量的接收信号强度的差异来微调增益。 DAC（500）输出增益的分贝值。 VGA（100）线性地施加增益的分贝值，并将分贝值作为输入到ADC的模拟信号提供。