发明名称 |
ALL-DIGITAL FREQUENCY SYNTHESIS WITH DCO GAIN CALCULATION |
摘要 |
An all-digital frequency synthesizer architecture is built around a digitally controlled oscillator (DCO) that is tuned in response to a digital tuning word (OTW). In exemplary embodiments: (1) a gain characteristic (KDCO) of the digitally controlled oscillator can be determined by observing a digital control word before and after a known change (&Dgr;fmax) in the oscillating frequency; and (2) a portion (TUNE_TF) of the tuning word can be dithered (1202), and the resultant dithered portion (dkTF) can then be applied to a control input of switchable devices within the digitally controlled oscillator.
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申请公布号 |
US2011261871(A1) |
申请公布日期 |
2011.10.27 |
申请号 |
US201113175594 |
申请日期 |
2011.07.01 |
申请人 |
STASZEWSKI ROBERT B;LEIPOLD DIRK;WALLBERG JOHN |
发明人 |
STASZEWSKI ROBERT B.;LEIPOLD DIRK;WALLBERG JOHN |
分类号 |
H04B17/00;H03L7/085;H03L7/099 |
主分类号 |
H04B17/00 |
代理机构 |
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地址 |
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