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1. 发明申请

US20120075012A1 Systems and Methods for Filter Initialization and Tuning 有权
标题翻译：过滤器初始化和调优的系统和方法
公开(公告)号：US20120075012A1
公开(公告)日：2012-03-29
申请号：US12889288
申请日：2010-09-23
申请人： James A. Bailey , Robert K. Chen , Richard T. Kaul
发明人： James A. Bailey , Robert K. Chen , Richard T. Kaul
IPC分类号： H03K5/00
CPC分类号： H03H17/0248 , G11B20/10009 , G11B20/10027 , G11B20/10046 , G11B2220/2516 , H03H11/0472 , H03H2210/012 , H03H2210/015 , H03H2210/021
摘要： Various embodiments of the present invention provide systems and methods for data filter tuning. As an example, a method for filter tuning is disclosed that includes: providing a tunable filter having an operation filter and a calibration filter; applying a low frequency test input to the operation filter in place of an input signal to yield a first filter output; calculating a low frequency magnitude value corresponding to the first filter output; applying a high frequency test input to the operation filter in place of an input signal to yield a second filter output; calculating a high frequency magnitude value corresponding to the second filter output; modifying a tuning factor of the calibration filter when a ratio of the high frequency magnitude value and the low frequency magnitude value is outside of a defined range; and storing the tuning factor of the calibration filter when the ratio of the high frequency magnitude value and the low frequency magnitude value is within the defined range.
摘要翻译：本发明的各种实施例提供了用于数据滤波器调谐的系统和方法。作为示例，公开了一种用于滤波器调谐的方法，其包括：提供具有操作滤波器和校准滤波器的可调谐滤波器; 将低频测试输入施加到操作滤波器来代替输入信号以产生第一滤波器输出; 计算对应于第一滤波器输出的低频幅度值; 将高频测试输入代替输入信号施加到操作滤波器以产生第二滤波器输出; 计算对应于第二滤波器输出的高频幅度值; 当所述高频幅度值和所述低频幅度值的比率超出限定范围时，修改所述校准滤波器的调谐因子; 并且当所述高频幅度值和所述低频幅度值的比率在所述限定范围内时，存储所述校准滤波器的调谐系数。

2. 发明授权

US08816761B2 Tunable biquad filter circuit including phase shift detection and methods for using such 有权
标题翻译：包括相移检测的可调二进制滤波电路及其使用方法
公开(公告)号：US08816761B2
公开(公告)日：2014-08-26
申请号：US12889270
申请日：2010-09-23
申请人： James A. Bailey , Robert K. Chen , Richard T. Kaul
发明人： James A. Bailey , Robert K. Chen , Richard T. Kaul
IPC分类号： H03B1/00 , H03H11/04
CPC分类号： H03H11/0422 , G11B20/10009 , G11B20/10027 , G11B20/10046 , G11B2220/2516 , H03H11/0472 , H03H2210/012 , H03H2210/015 , H03H2210/021
摘要： Various embodiments of the present invention provide tunable filter circuits and methods for using such. As an example, a tunable biquad filter is disclosed that includes a tunable biquad circuit, a mixer circuit and a low pass filter. The tunable biquad circuit exhibits a cutoff frequency corresponding to an adjustment value, and is operable to receive an filter input and to provide a filter output. The mixer circuit is operable to provide a product of the filter input and the filter output. The product includes a time dependent component and a static component. The low pass filter is operable to receive the product and to provide the static component.
摘要翻译：本发明的各种实施例提供了可调谐滤波器电路及其使用方法。作为示例，公开了包括可调双二阶电路，混频器电路和低通滤波器的可调二阶滤波器。可调谐二次电路具有对应于调整值的截止频率，并且可操作以接收滤波器输入并提供滤波器输出。混频器电路可操作以提供滤波器输入和滤波器输出的乘积。该产品包括时间依赖组件和静态组件。低通滤波器可操作以接收产品并提供静态组件。

3. 发明申请

US20120075011A1 Tunable Biquad Filter Circuit Including Phase Shift Detection and Methods for Using Such 有权
标题翻译：包括相移检测的可调整Biquad滤波电路及其使用方法
公开(公告)号：US20120075011A1
公开(公告)日：2012-03-29
申请号：US12889270
申请日：2010-09-23
申请人： James A. Bailey , Robert K. Chen , Richard T. Kaul
发明人： James A. Bailey , Robert K. Chen , Richard T. Kaul
IPC分类号： H03K5/00
CPC分类号： H03H11/0422 , G11B20/10009 , G11B20/10027 , G11B20/10046 , G11B2220/2516 , H03H11/0472 , H03H2210/012 , H03H2210/015 , H03H2210/021
摘要： Various embodiments of the present invention provide tunable filter circuits and methods for using such. As an example, a tunable biquad filter is disclosed that includes a tunable biquad circuit, a mixer circuit and a low pass filter. The tunable biquad circuit exhibits a cutoff frequency corresponding to an adjustment value, and is operable to receive an filter input and to provide a filter output. The mixer circuit is operable to provide a product of the filter input and the filter output. The product includes a time dependent component and a static component. The low pass filter is operable to receive the product and to provide the static component.
摘要翻译：本发明的各种实施例提供了可调谐滤波器电路及其使用方法。作为示例，公开了包括可调双二阶电路，混频器电路和低通滤波器的可调二阶滤波器。可调谐二次电路具有对应于调整值的截止频率，并且可操作以接收滤波器输入并提供滤波器输出。混频器电路可操作以提供滤波器输入和滤波器输出的乘积。该产品包括时间依赖组件和静态组件。低通滤波器可操作以接收产品并提供静态组件。

4. 发明授权

US08560589B2 Systems and methods for filter initialization and tuning 有权
标题翻译：滤波器初始化和调谐的系统和方法
公开(公告)号：US08560589B2
公开(公告)日：2013-10-15
申请号：US12889288
申请日：2010-09-23
申请人： James A. Bailey , Robert K. Chen , Richard T. Kaul
发明人： James A. Bailey , Robert K. Chen , Richard T. Kaul
IPC分类号： G06F17/10
CPC分类号： H03H17/0248 , G11B20/10009 , G11B20/10027 , G11B20/10046 , G11B2220/2516 , H03H11/0472 , H03H2210/012 , H03H2210/015 , H03H2210/021
摘要： Various embodiments of the present invention provide systems and methods for data filter tuning. As an example, a method for filter tuning is disclosed that includes: providing a tunable filter having an operation filter and a calibration filter; applying a low frequency test input to the operation filter in place of an input signal to yield a first filter output; calculating a low frequency magnitude value corresponding to the first filter output; applying a high frequency test input to the operation filter in place of an input signal to yield a second filter output; calculating a high frequency magnitude value corresponding to the second filter output; modifying a tuning factor of the calibration filter when a ratio of the high frequency magnitude value and the low frequency magnitude value is outside of a defined range; and storing the tuning factor of the calibration filter when the ratio of the high frequency magnitude value and the low frequency magnitude value is within the defined range.
摘要翻译：本发明的各种实施例提供了用于数据滤波器调谐的系统和方法。作为示例，公开了一种用于滤波器调谐的方法，其包括：提供具有操作滤波器和校准滤波器的可调谐滤波器; 将低频测试输入施加到操作滤波器来代替输入信号以产生第一滤波器输出; 计算对应于第一滤波器输出的低频幅度值; 将高频测试输入代替输入信号施加到操作滤波器以产生第二滤波器输出; 计算对应于第二滤波器输出的高频幅度值; 当所述高频幅度值和所述低频幅度值的比率超出限定范围时，修改所述校准滤波器的调谐因子; 并且当所述高频幅度值和所述低频幅度值的比率在所述限定范围内时，存储所述校准滤波器的调谐系数。

5. 发明授权

US06617991B2 Structure for adjusting gain in a flash analog to digital converter 失效
公开(公告)号：US06617991B2
公开(公告)日：2003-09-09
申请号：US09832775
申请日：2001-04-11
申请人： Richard T. Kaul , Steven J. Tanghe
发明人： Richard T. Kaul , Steven J. Tanghe
IPC分类号： H03M112
CPC分类号： H03M1/1014 , H03M1/0682 , H03M1/365
摘要： A flash analog to digital converter includes a reference ladder, consisting primarily of resistors, a plurality of comparators, each coupled to a different reference voltage on the reference ladder (the comparators compare a received voltage with a reference voltage level developed across corresponding resistor or group of resistors), and a variable power source coupled to the reference ladder for varying the reference levels generated from the ladder. The structure includes a fixed (or variable) gain driver supplying the received signal voltage to the bank of comparators. The variable power source can be an adjustable current source or an adjustable voltage source. The comparators can be single-ended comparators or differential comparators.

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