发明申请
- 专利标题： PLL CIRCUIT AND RADIO COMMUNICATION APPARATUS
- 专利标题（中）： PLL电路和无线电通信设备
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申请号： US12558771申请日： 2009-09-14
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公开(公告)号： US20100164633A1公开(公告)日： 2010-07-01
- 发明人: Hiroaki Hoshino , Osamu Watanabe , Shoji Otaka , Tetsuro Itakura
- 申请人： Hiroaki Hoshino , Osamu Watanabe , Shoji Otaka , Tetsuro Itakura
- 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： JP2008-330652 20081225
- 主分类号： H03L7/097
- IPC分类号： H03L7/097
摘要：
A PLL circuit includes: a voltage-controlled oscillator including: a first oscillating portion configured to generate first differential signals; and a second oscillating portion configured to generate second differential signals with a phase difference of 90 degrees from the first differential signals; a phase detector configured to compare phases of third differential signals based on the first and second differential signals with a phase of a reference signal; and a loop filter configured to generate a control voltage for controlling the voltage-controlled oscillator based on a result of the comparison in the phase detector.
公开/授权文献
- US07911281B2 PLL circuit and radio communication apparatus 公开/授权日：2011-03-22
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