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公开(公告)号：US08502609B2
公开(公告)日：2013-08-06
申请号：US13158121
申请日：2011-06-10
申请人： Mahyar Kargar , Siavash Fallahi , Namik Kocaman , Mehdi Khanpour , Afshin Momtaz
发明人： Mahyar Kargar , Siavash Fallahi , Namik Kocaman , Mehdi Khanpour , Afshin Momtaz
CPC分类号： G01R23/02 , G01R23/15 , G01R25/00 , H03D13/00 , H03L7/00 , H03L7/0807 , H03L7/091 , H03L7/113 , H03L2207/06
摘要： Embodiments provide a reference-less frequency detector that overcomes the “dead zone” problem of conventional circuits. In particular, the frequency detector is able to accurately resolve the polarity of the frequency difference between the VCO clock signal and the data signal, irrespective of the magnitude of the frequency difference and the presence of VCO clock jitter and/or ISI on the data signal.
摘要翻译： 实施例提供了一种克服常规电路的“死区”问题的无参考频率检测器。 特别地，频率检测器能够精确地解决VCO时钟信号和数据信号之间的频率差的极性，而不管频率差的大小和数据信号上是否存在VCO时钟抖动和/或ISI 。
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公开(公告)号：US20120313715A1
公开(公告)日：2012-12-13
申请号：US13158121
申请日：2011-06-10
申请人： Mahyar Kargar , Siavash Fallahi , Namik Kocaman , Mehdi Khanpour , Afshin Momtaz
发明人： Mahyar Kargar , Siavash Fallahi , Namik Kocaman , Mehdi Khanpour , Afshin Momtaz
CPC分类号： G01R23/02 , G01R23/15 , G01R25/00 , H03D13/00 , H03L7/00 , H03L7/0807 , H03L7/091 , H03L7/113 , H03L2207/06
摘要： Embodiments provide a reference-less frequency detector that overcomes the “dead zone” problem of conventional circuits. In particular, the frequency detector is able to accurately resolve the polarity of the frequency difference between the VCO clock signal and the data signal, irrespective of the magnitude of the frequency difference and the presence of VCO clock jitter and/or ISI on the data signal.
摘要翻译： 实施例提供了一种克服常规电路的死区问题的无参考频率检测器。 特别地，频率检测器能够精确地解决VCO时钟信号和数据信号之间的频率差的极性，而不管频率差的大小和数据信号上是否存在VCO时钟抖动和/或ISI 。
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公开(公告)号：US20120313714A1
公开(公告)日：2012-12-13
申请号：US13158075
申请日：2011-06-10
申请人： Mahyar Kargar , Siavash Fallahi , Namik Kocaman , Afshin Momtaz
发明人： Mahyar Kargar , Siavash Fallahi , Namik Kocaman , Afshin Momtaz
IPC分类号： H03L7/00
CPC分类号： H03L7/0807 , H03L7/00 , H03L7/087 , H03L7/091 , H03L7/0991 , H03L7/113 , H03L2207/06 , H04L7/0004 , H04L7/033
摘要： Embodiments for reference-less voltage controlled oscillator (VCO) calibration are provided. Embodiments include a VCO calibration module which uses one or more signals from a frequency detector to automatically select a proper VCO band and bring the VCO clock frequency close enough to the data rate. The VCO calibration module uses a calibration code to calibrate the VCO. In embodiments, the calibration code is determined using a frequency search scheme, which includes a discovery phase to determine the proper VCO band, and a binary search phase and a monitoring phase to select the calibration code that brings the VCO clock frequency closest to the data rate.
摘要翻译： 提供了无参考压控振荡器（VCO）校准的实施例。 实施例包括VCO校准模块，其使用来自频率检测器的一个或多个信号来自动选择适当的VCO频带并使VCO时钟频率接近于数据速率。 VCO校准模块使用校准代码校准VCO。 在实施例中，使用频率搜索方案来确定校准码，该频率搜索方案包括确定适当的VCO频带的发现阶段以及二进制搜索阶段和监视阶段，以选择使VCO时钟频率最接近数据的校准码 率。
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公开(公告)号：US09281828B2
公开(公告)日：2016-03-08
申请号：US13158075
申请日：2011-06-10
申请人： Mahyar Kargar , Siavash Fallahi , Namik Kocaman , Afshin Momtaz
发明人： Mahyar Kargar , Siavash Fallahi , Namik Kocaman , Afshin Momtaz
CPC分类号： H03L7/0807 , H03L7/00 , H03L7/087 , H03L7/091 , H03L7/0991 , H03L7/113 , H03L2207/06 , H04L7/0004 , H04L7/033
摘要： Embodiments for reference-less voltage controlled oscillator (VCO) calibration are provided. Embodiments include a VCO calibration module which uses one or more signals from a frequency detector to automatically select a proper VCO band and bring the VCO clock frequency close enough to the data rate. The VCO calibration module uses a calibration code to calibrate the VCO. In embodiments, the calibration code is determined using a frequency search scheme, which includes a discovery phase to determine the proper VCO band, and a binary search phase and a monitoring phase to select the calibration code that brings the VCO clock frequency closest to the data rate.
摘要翻译： 提供了无参考压控振荡器（VCO）校准的实施例。 实施例包括VCO校准模块，其使用来自频率检测器的一个或多个信号来自动选择适当的VCO频带并使VCO时钟频率接近于数据速率。 VCO校准模块使用校准代码校准VCO。 在实施例中，使用频率搜索方案来确定校准码，该频率搜索方案包括确定适当的VCO频带的发现阶段以及二进制搜索阶段和监视阶段，以选择使VCO时钟频率最接近数据的校准码 率。
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公开(公告)号：US08094056B2
公开(公告)日：2012-01-10
申请号：US12283853
申请日：2008-09-15
申请人： Ali Nazemi , Georgios Asmanis , German Cesar Augusto Luna , Mahyar Kargar , Carl Grace , Sumant Ramprasad
发明人： Ali Nazemi , Georgios Asmanis , German Cesar Augusto Luna , Mahyar Kargar , Carl Grace , Sumant Ramprasad
IPC分类号： H03M1/20
CPC分类号： H03M1/1042 , H03M1/1215 , H03M1/44
摘要： A lookahead pipelined ADC architecture uses open-loop residue amplifiers with calibration. This approach is able to achieve a high-speed, high-accuracy ADC with reduced power consumption. In one aspect, an ADC pipeline unit includes a plurality of lookahead pipeline stages (i.e., an ADC lookahead pipeline) coupled to a calibration unit. The ADC lookahead pipeline uses open-loop residue amplifiers. The calibration unit compensates for non-linearity in the open-loop amplifiers.
摘要翻译： 先进的流水线ADC架构使用开环残余放大器进行校准。 这种方法能够实现具有降低功耗的高速，高精度ADC。 在一个方面，ADC流水线单元包括耦合到校准单元的多个先行流水线级（即，ADC先行流水线）。 ADC前端管道使用开环残留放大器。 校准单元补偿开环放大器中的非线性。
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公开(公告)号：US20090243907A1
公开(公告)日：2009-10-01
申请号：US12283853
申请日：2008-09-15
申请人： Ali Nazemi , Georgios Asmanis , German Luna , Mahyar Kargar , Carl Grace , Sumant Ramprasad
发明人： Ali Nazemi , Georgios Asmanis , German Luna , Mahyar Kargar , Carl Grace , Sumant Ramprasad
IPC分类号： H03M1/38
CPC分类号： H03M1/1042 , H03M1/1215 , H03M1/44
摘要： A lookahead pipelined ADC architecture uses open-loop residue amplifiers with calibration. This approach is able to achieve a high-speed, high-accuracy ADC with reduced power consumption. In one aspect, an ADC pipeline unit includes a plurality of lookahead pipeline stages (i.e., an ADC lookahead pipeline) coupled to a calibration unit. The ADC lookahead pipeline uses open-loop residue amplifiers. The calibration unit compensates for non-linearity in the open-loop amplifiers.
摘要翻译： 先进的流水线ADC架构使用开环残余放大器进行校准。 这种方法能够实现具有降低功耗的高速，高精度ADC。 在一个方面，ADC流水线单元包括耦合到校准单元的多个先行流水线级（即，ADC先行流水线）。 ADC前端管道使用开环残留放大器。 校准单元补偿开环放大器中的非线性。
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