发明申请
- 专利标题: LO GENERATION WITH DESKEWED INPUT OSCILLATOR SIGNAL
- 专利标题(中): LO生成与输入振荡器信号
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申请号: US12270764申请日: 2008-11-13
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公开(公告)号: US20100120390A1公开(公告)日: 2010-05-13
- 发明人: Vinod V. Panikkath , Prasad S. Gudem , Steven C. Ciccarelli
- 申请人: Vinod V. Panikkath , Prasad S. Gudem , Steven C. Ciccarelli
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM INCORPORATED
- 当前专利权人: QUALCOMM INCORPORATED
- 当前专利权人地址: US CA San Diego
- 主分类号: H04B1/16
- IPC分类号: H04B1/16
摘要:
Techniques for generating local oscillator (LO) signals are described. In one design, an apparatus may include a deskew circuit and a divider circuit. The deskew circuit may receive a differential input oscillator signal having timing skew and provide a differential output oscillator signal having reduced timing skew. The differential input oscillator signal may include first and second input oscillator signals, and the differential output oscillator signal may include first and second output oscillator signals. In one design, the deskew circuit may include first and second variable delay circuits that receive the first and second input oscillator signals, respectively, and provide the first and second output oscillator signals, respectively. Each output oscillator signal may have an adjustable delay selected to reduce timing skew. The divider circuit may divide the differential output oscillator signal in frequency and provide differential I and Q divided signals, which may be used to generate LO signals.
公开/授权文献
- US08712357B2 LO generation with deskewed input oscillator signal 公开/授权日:2014-04-29
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