基本信息:
- 专利标题： Digital broadcast wave relay device
- 专利标题（中）：数字广播波形继电器
- 申请号：JP2006247038 申请日：2006-09-12
- 公开(公告)号：JP2008072218A 公开(公告)日：2008-03-27
- 发明人： MURAKAMI YASUSHI , TSURUTA MAKOTO , YOSHIDA TETSUO
- 申请人： Toshiba Corp , 株式会社東芝
- 专利权人： Toshiba Corp,株式会社東芝
- 当前专利权人： Toshiba Corp,株式会社東芝
- 优先权： JP2006247038 2006-09-12
- 主分类号： H04B7/208
- IPC分类号： H04B7/208 ; H04H1/00 ; H04H3/00 ; H04H20/06 ; H04H20/67
摘要：
PROBLEM TO BE SOLVED: To provide a digital broadcast wave relay device of which the circuit constitution can be made simple and compact.
SOLUTION: A received RF signal is converted into an IF signal by a down converter 111 based on a first local oscillation signal, and then digitally converted by an analog-to-digital converting circuit 112 based on a second local oscillation signal. A digital signal processing circuit 113 applies signal processing to the digitally converted IF signal based on the second local oscillation signal. The processed signal is converted by a digital-to-analog converting circuit 114 into an analog IF signal based on the second local oscillation signal, and then converted into an RF signal by an up converter 115 based on the first local oscillation signal. A first local oscillation circuit 117 and a second local oscillation circuit 118 generates the first and second local oscillation signals respectively based on a common reference signal generated by a reference signal generation section 119.
COPYRIGHT: (C)2008,JPO&INPIT
摘要（中）：
SOLUTION: A received RF signal is converted into an IF signal by a down converter 111 based on a first local oscillation signal, and then digitally converted by an analog-to-digital converting circuit 112 based on a second local oscillation signal. A digital signal processing circuit 113 applies signal processing to the digitally converted IF signal based on the second local oscillation signal. The processed signal is converted by a digital-to-analog converting circuit 114 into an analog IF signal based on the second local oscillation signal, and then converted into an RF signal by an up converter 115 based on the first local oscillation signal. A first local oscillation circuit 117 and a second local oscillation circuit 118 generates the first and second local oscillation signals respectively based on a common reference signal generated by a reference signal generation section 119.
COPYRIGHT: (C)2008,JPO&INPIT
要解决的问题：提供一种电路结构简单紧凑的数字广播波继电器装置。 解决方案：接收到的RF信号由下变频器111基于第一本地振荡信号转换成IF信号，然后由模数转换电路112基于第二本地振荡信号进行数字转换。 数字信号处理电路113基于第二本地振荡信号对数字转换的IF信号应用信号处理。 经处理的信号由数模转换电路114转换为基于第二本地振荡信号的模拟IF信号，然后由上转换器115基于第一本地振荡信号转换为RF信号。 第一本地振荡电路117和第二本地振荡电路118分别基于由参考信号产生部分119产生的公共参考信号产生第一和第二本地振荡信号。（C）2008，JPO和INPIT