发明名称 |
DIGITALLY CONTROLLED OSCILLATOR WITH IMPROVED DIGITAL FREQUENCY CALIBRATION |
摘要 |
<p>Techniques for calibrating digitally controlled oscillators (DCOs) are disclosed. In one aspect of the disclosure, an initial set of control codes for operating the DCO with a coarse frequency tuning bank with multiple overlapping coarse frequency tuning segments (LTBs) and one fine main frequency tuning bank (MTB) is determined. A range of output frequencies produced from the initial set is identified. Instances of overlap are identified in the frequency range between consecutive LTB segments. An offset in the MTB is added that corresponds to the overlap instance between consecutive LTBs to establish a revised set. The revised control codes are utilized to tune the DCO over the desired frequency range.</p> |
申请公布号 |
WO2010062621(A1) |
申请公布日期 |
2010.06.03 |
申请号 |
WO2009US62258 |
申请日期 |
2009.10.27 |
申请人 |
QUALCOMM INCORPORATED;SUN, BO;YANG, ZIXIANG |
发明人 |
SUN, BO;YANG, ZIXIANG |
分类号 |
H03B5/08;H03J3/06;H03J3/20;H03J5/02;H03J7/04;H03M1/10;H03M1/68;H03M1/86 |
主分类号 |
H03B5/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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