- 专利标题: Compensation technique for the nonlinear behavior of digitally-controlled oscillator (DCO) gain
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申请号: US16106163申请日: 2018-08-21
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公开(公告)号: US10659057B2公开(公告)日: 2020-05-19
- 发明人: Chao Chieh Li , Min-Shueh Yuan , Robert Bogdan Staszewski , Chia-Chun Liao
- 申请人: Taiwan Semiconductor Manufacturing Company Limited
- 申请人地址: TW Hsinchu
- 专利权人: Taiwan Semiconductor Manufacturing Company Limited
- 当前专利权人: Taiwan Semiconductor Manufacturing Company Limited
- 当前专利权人地址: TW Hsinchu
- 代理机构: Jones Day
- 主分类号: H03L7/08
- IPC分类号: H03L7/08 ; H03L7/093 ; H03L7/099 ; H03B5/12 ; H03B5/04
摘要:
Systems and methods are provided for hopping a digitally controlled oscillator (DCO) among a plurality of channels, wherein a gain of the DCO KDCO is a nonlinear function of frequency. A first normalized tuning word (NTW) corresponding to a first channel of the plurality of channels is generated. A first normalizing gain multiplier X is generated based on the nonlinear function of frequency, on an estimate of the nonlinear function of frequency, at a first frequency corresponding to the first channel. The first NTW is multiplied by the first X to obtain a first oscillator tuning word (OTW). The first OTW is input to the DCO to cause the DCO to hop to the first channel. A system for hopping among a plurality of channels at a plurality of respective frequencies comprises a phase-locked loop (PLL), a digitally controlled oscillator (DCO), a multiplexer, and an arithmetic module.
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