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公开(公告)号:US07948274B2
公开(公告)日:2011-05-24
申请号:US12570068
申请日:2009-09-30
申请人: Tapio Rapinoja , Liangge Xu
发明人: Tapio Rapinoja , Liangge Xu
IPC分类号: H03B21/00
CPC分类号: G06F1/025 , H03K5/156 , H03K2005/00052
摘要: A method includes generating a plurality of reference phases of a reference signal and selecting a sub-phase from each of the plurality of reference phases to form a set of selected sub-phases. In the method selecting operates in response to synchronized outputs of a multi-phase phase accumulator that operates synchronously in accordance with one of the sub-phases of the set of sub-phases, and where the outputs of the multi-phase phase accumulator may be synchronized using at least one additional sub-phase.
摘要翻译: 一种方法包括生成参考信号的多个参考相位,并从多个参考相位中的每一个选择一个子相位,以形成一组选定的子相位。 在方法选择中,响应于根据子集合子集中的一个子阶段同步操作的多相位相位累加器的同步输出,以及多相位相位累加器的输出可以是 使用至少一个附加子阶段同步。
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公开(公告)号:US20110074469A1
公开(公告)日:2011-03-31
申请号:US12570068
申请日:2009-09-30
申请人: Tapio Rapinoja , Liangge Xu
发明人: Tapio Rapinoja , Liangge Xu
CPC分类号: G06F1/025 , H03K5/156 , H03K2005/00052
摘要: A method includes generating a plurality of reference phases of a reference signal and selecting a sub-phase from each of the plurality of reference phases to form a set of selected sub-phases. In the method selecting operates in response to synchronized outputs of a multi-phase phase accumulator that operates synchronously in accordance with one of the sub-phases of the set of sub-phases, and where the outputs of the multi-phase phase accumulator may be synchronized using at least one additional sub-phase.
摘要翻译: 一种方法包括生成参考信号的多个参考相位,并从多个参考相位中的每一个选择一个子相位,以形成一组选定的子相位。 在方法选择中,响应于根据子集合子集中的一个子阶段同步操作的多相位相位累加器的同步输出,以及多相位相位累加器的输出可以是 使用至少一个附加子阶段同步。
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3.
公开(公告)号:US08063669B2
公开(公告)日:2011-11-22
申请号:US12291255
申请日:2008-11-06
申请人: Saska Lindfors , Kari Stadius , Liangge Xu , Tapio Rapinoja , Jussi Ryynanen , Risto H. S. Kaunisto , Aarno Parssinen
发明人: Saska Lindfors , Kari Stadius , Liangge Xu , Tapio Rapinoja , Jussi Ryynanen , Risto H. S. Kaunisto , Aarno Parssinen
IPC分类号: H03B21/00
CPC分类号: G06F1/022
摘要: Described is an apparatus that includes a frequency source and a plurality of time domain direct digital synthesizers each having an input connected to an output of the frequency source and an output providing an output frequency signal. A particular time domain direct digital synthesizer includes a sigma-delta modulator that functions as a second order multi-stage noise shaping sigma-delta modulator. In one exemplary embodiment sigma-delta modulator outputs provide a unitary-weighted word used to switch certain unit capacitors that comprise part of a delay modulator to produce a time-varying delay having a time-averaged value that directly corresponds to a binary value appearing on a plurality of phase accumulator outputs.
摘要翻译: 描述了一种装置,其包括频率源和多个时域直接数字合成器,每个时域直接数字合成器具有连接到频率源的输出的输入端和提供输出频率信号的输出。 特定的时域直接数字合成器包括用作二阶多级噪声整形Σ-Δ调制器的Σ-Δ调制器。 在一个示例性实施例中,Σ-Δ调制器输出提供用于切换包括延迟调制器的一部分的某些单位电容器的单位加权字,以产生时变延迟,该时变延迟具有直接对应于出现在 多个相位累加器输出。
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4.
公开(公告)号:US20100109714A1
公开(公告)日:2010-05-06
申请号:US12291255
申请日:2008-11-06
申请人: Saska Lindfors , Kari Stadius , Liangge Xu , Tapio Rapinoja , Jussi Ryynanen , Risto H.S. Kaunisto , Aarno Parssinen
发明人: Saska Lindfors , Kari Stadius , Liangge Xu , Tapio Rapinoja , Jussi Ryynanen , Risto H.S. Kaunisto , Aarno Parssinen
IPC分类号: H03B21/00
CPC分类号: G06F1/022
摘要: Described is an apparatus that includes a frequency source and a plurality of time domain direct digital synthesizers each having an input connected to an output of the frequency source and an output providing an output frequency signal. A particular time domain direct digital synthesizer includes a sigma-delta modulator that functions as a second order multi-stage noise shaping sigma-delta modulator. In one exemplary embodiment sigma-delta modulator outputs provide a unitary-weighted word used to switch certain unit capacitors that comprise part of a delay modulator to produce a time-varying delay having a time-averaged value that directly corresponds to a binary value appearing on a plurality of phase accumulator outputs.
摘要翻译: 描述了一种装置,其包括频率源和多个时域直接数字合成器,每个时域直接数字合成器具有连接到频率源的输出的输入端和提供输出频率信号的输出。 特定的时域直接数字合成器包括用作二阶多级噪声整形Σ-Δ调制器的Σ-Δ调制器。 在一个示例性实施例中,Σ-Δ调制器输出提供用于切换包括延迟调制器的一部分的某些单位电容器的单位加权字,以产生时变延迟,该时变延迟具有直接对应于出现在 多个相位累加器输出。
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公开(公告)号:US08666012B2
公开(公告)日:2014-03-04
申请号:US13277305
申请日:2011-10-20
IPC分类号: H03D3/24
CPC分类号: H03L7/16 , H03L7/085 , H03L7/087 , H03L7/113 , H03L2207/50
摘要: An apparatus and method for operating a frequency synthesizer wherein a value of an first control signal associated with a fine frequency feedback loop connected to a signal generator is monitored, and a second control signal associated with a medium or coarse frequency feedback loop connected to the signal generator is adjusted based on the monitoring. The first and second control signals are then output to control the frequency synthesizer.
摘要翻译: 一种用于操作频率合成器的装置和方法,其中监视与连接到信号发生器的精细频率反馈回路相关联的第一控制信号的值,以及与连接到信号的中等或粗频率反馈回路相关联的第二控制信号 发电机根据监控进行调整。 然后输出第一和第二控制信号以控制频率合成器。
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公开(公告)号:US20130099829A1
公开(公告)日:2013-04-25
申请号:US13277305
申请日:2011-10-20
IPC分类号: H03B21/00
CPC分类号: H03L7/16 , H03L7/085 , H03L7/087 , H03L7/113 , H03L2207/50
摘要: An apparatus and method for operating a frequency synthesizer wherein a value of an first control signal associated with a fine frequency feedback loop connected to a signal generator is monitored, and a second control signal associated with a medium or coarse frequency feedback loop connected to the signal generator is adjusted based on the monitoring. The first and second control signals are then output to control the frequency synthesizer.
摘要翻译: 一种用于操作频率合成器的装置和方法,其中监视与连接到信号发生器的精细频率反馈回路相关联的第一控制信号的值,以及与连接到信号的中等或粗频率反馈回路相关联的第二控制信号 发电机根据监控进行调整。 然后输出第一和第二控制信号以控制频率合成器。
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