公开(公告)号：US20150372701A1

公开(公告)日：2015-12-24

申请号：US14744142

申请日：2015-06-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wufeng WANG ,  Min YI ,  Nianyong ZHU ,  Bingxuan MO

IPC: H04B1/04 ,  H04L7/033 ,  H04B7/01

CPC classification number: H04B1/0475 ,  H03L7/00 ,  H04L7/0331 ,  H04L7/0337 ,  H04L27/2092 ,  H04L27/364 ,  H04L27/365

Abstract: The present invention relates to a modulation circuit of a digital transmitter, a digital transmitter, and a signal modulation method. The modulation circuit includes: a first synchronizing circuit and a digital modulator, where the first synchronizing circuit separately perform phase delay on a first local-frequency signal or a second local-frequency signal to obtain corresponding delay signals, and perform phase adjustment on a digital baseband signal by using the delay signals, to generate a first adjusted signal and a second adjusted signal; and the digital modulator modulates the first adjusted signal by using the first local-frequency signal, to generate a first radio-frequency signal, and modulates the second adjusted signal by using the second local-frequency signal, to generate a second radio-frequency signal.

Abstract translation: 本发明涉及数字发射机的调制电路，数字发射机和信号调制方法。 调制电路包括：第一同步电路和数字调制器，其中第一同步电路在第一本地频率信号或第二本地频率信号上分别执行相位延迟以获得相应的延迟信号，并对数字 基带信号通过使用延迟信号产生第一调整信号和第二调整信号; 并且所述数字调制器通过使用所述第一本机频率信号来调制所述第一调整信号，以产生第一射频信号，并且通过使用所述第二本机频率信号对所述第二调整信号进行调制，以产生第二射频信号 。