发明申请
- 专利标题： SEMICONDUCTOR INTEGRATED CIRCUIT AND RADIO COMMUNICATION APPARATUS
- 专利标题（中）： 半导体集成电路和无线电通信设备
-
申请号： US12886694申请日： 2010-09-21
-
公开(公告)号： US20110227656A1公开(公告)日： 2011-09-22
- 发明人: Yuji Satoh
- 申请人： Yuji Satoh
- 申请人地址： JP Tokyo
- 专利权人： KABUSHIKI KAISHA TOSHIBA
- 当前专利权人： KABUSHIKI KAISHA TOSHIBA
- 当前专利权人地址： JP Tokyo
- 优先权： JP2010-62691 20100318
- 主分类号： H03K3/03
- IPC分类号： H03K3/03
摘要：
A semiconductor integrated circuit includes a ring oscillator and a noise canceller. The ring oscillator includes first and second signal generators. The first signal generator is configured to generate a first output signal having a first phase based on an input signal. The second signal generator is configured to generate a second output signal having a second phase different from the first phase based on the input signal. The noise canceller includes first and second amplifiers and an arithmetic module. The first amplifier is configured to amplify the first output signal generated by the first signal generator using a first amplification factor. The second amplifier is configured to amplify the second output signal generated by the second signal generator using a second amplification factor. The arithmetic module is configured to combine the first output signal amplified by the first amplifier with the second output signal amplified by the second amplifier.