公开(公告)号：US20100046668A1

公开(公告)日：2010-02-25

申请号：US12234826

申请日：2008-09-22

申请人： Hae Moon Seo ,  Woo Chul Park ,  Myung Soo Lee ,  Myung Hyuo Yoon

发明人： Hae Moon Seo ,  Woo Chul Park ,  Myung Soo Lee ,  Myung Hyuo Yoon

IPC分类号： H04L27/36 ,  H04L27/00

CPC分类号： H04L27/364

摘要： Provided are a digital IF wireless transmitter, an RF modulator, and an RF modulating method. A digital IF wireless transmitter includes an IF up-converting unit up-converting a baseband I signal and a baseband Q signal on the basis of a first IF, a first operating unit subtracting the first IF-up-converted I signal and the first IF-up-converted Q signal, a D/A converting unit analog converting an output signal of the first operating unit, an IF modulating unit separating the same first and second signals from the output signal of the D/A converting unit, and modulating the first and the second signals on the basis of a second IF, a high-pass filtering unit passing a single sideband of the modulated first signal, a miss-matching correcting unit correcting an error of the modulated second signal, a second operating unit subtracting an output signal of the high-pass filtering unit and an output signal of the miss-matching correcting unit, a feedback unit receiving a feedback signal output from the second operating unit, detecting an error of the feedback signal, and providing the detected error to the miss-matching correcting unit, and an RF up-converting unit up-converting the output signal of the second operating unit on the basis of an RF.

摘要翻译： 提供了数字IF无线发射机，RF调制器和RF调制方法。 数字IF无线发射机包括：IF上变频单元，其基于第一IF上升转换基带I信号和基带Q信号;第一操作单元，减去第一IF上变频I信号和第一IF 上变频Q信号，对第一操作单元的输出信号进行模拟转换的D / A转换单元，将来自D / A转换单元的输出信号的相同第一和第二信号分离的IF调制单元， 基于第二IF的第一和第二信号，通过调制的第一信号的单个边带的高通滤波单元，校正调制的第二信号的误差的缺失匹配校正单元，第二运算单元，减去第 高通滤波单元的输出信号和失配匹配校正单元的输出信号，反馈单元接收从第二操作单元输出的反馈信号，检测反馈信号的误差，并提供 检测到错误匹配校正单元，以及RF上变频单元，基于RF对第二操作单元的输出信号进行上变频。