公开(公告)号：KR100778317B1

公开(公告)日：2007-11-22

申请号：KR1020060046268

申请日：2006-05-23

Applicant: 인하대학교 산학협력단

Inventor： 박효달 ,  고민호 ,  송병진 ,  김재현

IPC: H04L27/04 ,  H04L27/18 ,  H04L25/02

CPC classification number: H04L27/04 ,  H03G3/3052 ,  H04L27/18

Abstract: A digital broadband signal processing system using a hybrid conversion method is provided to improve an electrical property and an image signal eliminating characteristic of the system by using single frequency component. A dual conversion part(100) has a gain control member controlling a gain of a broadband signal, a first oscillator(120) generating a first variable oscillation frequency and a first mixer(130) mixing the first variable oscillation frequencies to covert the broadband signal into an intermediate frequency signal. A direction conversion part(200) a second oscillator(210) generating a second variable oscillation frequency, a phase shifting member(220) shifting a phase of the second variable oscillation frequency, second and third mixers(230A,230B), and first and second low pass filters(240A,240B) filtering the signals output from the second and the third mixers.

Abstract translation: 提供一种使用混合转换方法的数字宽带信号处理系统，通过使用单频分量来改善系统的电气特性和图像信号消除特性。 双转换部分（100）具有控制宽带信号的增益的增益控制部件，产生第一可变振荡频率的第一振荡器（120）和混合第一可变振荡频率以将宽带信号 变成中频信号。 方向转换部分（200）产生第二可变振荡频率的第二振荡器（210），移相第二可变振荡频率相位的相移部件（220），第二和第三混频器（230A，230B） 第二低通滤波器（240A，240B）对从第二和第三混频器输出的信号进行滤波。