发明授权
US07778610B2 Local oscillator with non-harmonic ratio between oscillator and RF frequencies using XOR operation with jitter estimation and correction
有权
振荡器和RF频率之间具有非谐波比的本地振荡器，使用具有抖动估计和校正的异或运算
- 专利标题： Local oscillator with non-harmonic ratio between oscillator and RF frequencies using XOR operation with jitter estimation and correction
- 专利标题（中）： 振荡器和RF频率之间具有非谐波比的本地振荡器，使用具有抖动估计和校正的异或运算
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申请号： US11844425申请日： 2007-08-24
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公开(公告)号： US07778610B2公开(公告)日： 2010-08-17
- 发明人: Robert B. Staszewski , Nir Tal
- 申请人： Robert B. Staszewski , Nir Tal
- 申请人地址： US TX Dallas
- 专利权人： Texas Instruments Incorporated
- 当前专利权人： Texas Instruments Incorporated
- 当前专利权人地址： US TX Dallas
- 代理商 Ronald O. Neerings; Wade James Brady, III; Frederick J. Telecky, Jr.
- 主分类号： H04B1/40
- IPC分类号： H04B1/40
摘要：
A novel and useful apparatus for and method of local oscillator (LO) generation with non-integer multiplication ratio between the local oscillator and RF frequencies. The LO generation schemes presented are operative to generate I and Q square waves at a designated frequency while avoiding the well known issue of harmonic pulling. The use of analog mixers of the prior art is avoided and replaced with an XOR gate configured to generate the correct average frequency. The edges are dynamically adjusted by ±T/12 or zero based on the state of the controlled oscillator down-divided clock.
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