发明授权
- 专利标题： PLL circuit and radio communication apparatus
- 专利标题（中）： PLL电路和无线电通信装置
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申请号： US12558771申请日： 2009-09-14
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公开(公告)号： US07911281B2公开(公告)日： 2011-03-22
- 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
- 代理机构： Turocy & Watson, LLP
- 优先权： JPP2008-330652 20081225
- 主分类号： H03B5/12
- IPC分类号： H03B5/12 ; H03B27/00 ; H03L7/18
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
- US20100164633A1 PLL CIRCUIT AND RADIO COMMUNICATION APPARATUS 公开/授权日：2010-07-01
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