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1. 发明授权

US07928789B2 Methods and apparatus for improved phase switching and linearity in an analog phase interpolator 有权
标题翻译：用于改善模拟相位内插器中的相位切换和线性度的方法和装置
公开(公告)号：US07928789B2
公开(公告)日：2011-04-19
申请号：US12344047
申请日：2008-12-24
申请人： Ronald L. Freyman , Craig B. Ziemer
发明人： Ronald L. Freyman , Craig B. Ziemer
IPC分类号： H03K11/16
CPC分类号： H03C3/225
摘要： Methods and apparatus are provided for improving phase switching and linearity in an analog phase interpolator. A phase interpolator in accordance with the present invention comprises (i) a plurality of tail current sources that are activated for substantially all times when the phase interpolator is operational; (ii) at least two pairs of input transistor devices, wherein one pair of the input transistor devices is associated with a minimum phase of the phase interpolator and another pair of the input transistor devices is associated with a maximum phase of the phase interpolator; and (iii) a plurality of current steering switches that provide currents generated by the plurality of tail current sources to one or more of the at least two pairs of input transistor devices, based on an applied interpolation control signal.
摘要翻译：提供了用于改善模拟相位内插器中的相位切换和线性度的方法和装置。根据本发明的相位插值器包括（i）多个尾电流源，其在相位内插器可操作时基本上被激活; （ii）至少两对输入晶体管器件，其中一对输入晶体管器件与相位内插器的最小相位相关联，另一对输入晶体管器件与相位内插器的最大相位相关联; 以及（iii）多个电流转向开关，其基于所施加的内插控制信号，将多个尾电流源产生的电流提供给所述至少两对输入晶体管器件中的一个或多个。

2. 发明授权

US07560967B2 Methods and apparatus for improved phase switching and linearity in an analog phase interpolator 失效
标题翻译：用于改善模拟相位内插器中的相位切换和线性度的方法和装置
公开(公告)号：US07560967B2
公开(公告)日：2009-07-14
申请号：US11870204
申请日：2007-10-10
申请人： Ronald L. Freyman , Craig B. Ziemer
发明人： Ronald L. Freyman , Craig B. Ziemer
IPC分类号： H03K11/16
CPC分类号： H03C3/225
摘要： Methods and apparatus are provided for improving phase switching and linearity in an analog phase interpolator. A phase interpolator in accordance with the present invention comprises (i) a plurality of tail current sources that are activated for substantially all times when the phase interpolator is operational; (ii) at least two pairs of input transistor devices, wherein one pair of the input transistor devices is associated with a minimum phase of the phase interpolator and another pair of the input transistor devices is associated with a maximum phase of the phase interpolator; and (iii) a plurality of current steering switches that provide currents generated by the plurality of tail current sources to one or more of the at least two pairs of input transistor devices, based on an applied interpolation control signal.
摘要翻译：提供了用于改善模拟相位内插器中的相位切换和线性度的方法和装置。根据本发明的相位插值器包括（i）多个尾电流源，其在相位内插器可操作时基本上被激活; （ii）至少两对输入晶体管器件，其中一对输入晶体管器件与相位内插器的最小相位相关联，另一对输入晶体管器件与相位内插器的最大相位相关联; 以及（iii）多个电流转向开关，其基于所施加的内插控制信号，将多个尾电流源产生的电流提供给所述至少两对输入晶体管器件中的一个或多个。

3. 发明授权

US07884659B2 Phase mixer and delay locked loop including the same 有权
标题翻译：相位混合器和延迟锁定环包括相同
公开(公告)号：US07884659B2
公开(公告)日：2011-02-08
申请号：US12347298
申请日：2008-12-31
申请人： Jae-Min Jang , Yong-Ju Kim , Sung-Woo Han , Hee-Woong Song , Ic-Su Oh , Hyung-Soo Kim , Tae-Jin Hwang , Hae-Rang Choi , Ji-Wang Lee , Chang-Kun Park
发明人： Jae-Min Jang , Yong-Ju Kim , Sung-Woo Han , Hee-Woong Song , Ic-Su Oh , Hyung-Soo Kim , Tae-Jin Hwang , Hae-Rang Choi , Ji-Wang Lee , Chang-Kun Park
IPC分类号： H03K11/16
CPC分类号： H03L7/0814 , H03K5/13 , H03K2005/00052 , H03K2005/00065 , H03L7/0818
摘要： A phase mixer includes a phase mixing unit configured to mix a phase of a first input signal and a phase of a second input signal in response to a phase control signal and output a phase mixed signal whose phase is varied by one or more units of a unit phase value, and a phase value adjusting unit configured to control an operation of the phrase mixing unit so that the unit phase value is adjusted in response to a code signal coding at least one of a process, voltage, or temperature (PVT) variation.
摘要翻译：相位混合器包括：相位混合单元，被配置为响应于相位控制信号混合第一输入信号的相位和第二输入信号的相位，并输出相位混合信号，该相位混合信号的相位由一个或多个单位单位相位值，以及相位值调整单元，被配置为控制短语混合单元的操作，使得响应于代码信号来编码单位相位值，编码信号编码处理，电压或温度（PVT）变化中的至少一个。

4. 发明授权

US07298194B2 Interpolation 有权
标题翻译：插值
公开(公告)号：US07298194B2
公开(公告)日：2007-11-20
申请号：US11151335
申请日：2005-06-13
申请人： Andrew Pickering , Susan Simpson , Peter Hunt
发明人： Andrew Pickering , Susan Simpson , Peter Hunt
IPC分类号： H03K11/16
CPC分类号： H03K5/13 , H03K2005/00052
摘要： A steering current generator for a phase interpolator has a multiplicity of fine phase adjustment current sources, each of which is switchable to direct its current to one or other of two summing nodes. The current of each of those two summing nodes is supplemented by respective fixed always-on current sources. The steering current generator has four current outputs and a switching matrix is provided to switch the current from the summing nodes to first and second selected ones of those outputs. The switching matrix is also connected to switch bleed currents to the other two of the current outputs.
摘要翻译：用于相位内插器的转向电流发生器具有多个精细相位调整电流源，每个电流源可切换以将其电流引导到两个求和节点中的一个或另一个。这两个求和节点中的每一个的电流由相应固定的永久在线电流源补充。转向电流发生器具有四个电流输出，并且提供开关矩阵以将电流从求和节点切换到那些输出中的第一和第二选定的输出。开关矩阵也连接到另外两个电流输出的断流电流。

5. 发明授权

US06897698B1 Phase shifting and PWM driving circuits and methods 失效
公开(公告)号：US06897698B1
公开(公告)日：2005-05-24
申请号：US10448496
申请日：2003-05-30
申请人： Virgil Ioan Gheorghiu , Da Liu
发明人： Virgil Ioan Gheorghiu , Da Liu
IPC分类号： H01J29/76 , H03K11/16
CPC分类号： H02M3/158 , H02M3/33569
摘要： The present invention provides an inverter controller comprising a drive circuit that generates a plurality of switch drive signals for inverter applications. In some exemplary embodiments, the drive circuit operates by reversing the command level of an error signal. In other embodiments, the drive circuit operates by using a half period of a sawtooth signal. In still other embodiments, the drive circuit operates by using a double period opposite shifting pulses method. The present invention also provides a PWM signal generator circuit that generates periodic PWM switch drive signals symmetrical to the minimum or maximum of a sawtooth waveform.

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