专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2008048744A3 CONTROLLING THE BANDWIDTH OF AN ANALOG FILTER 审中-公开
标题翻译：控制模拟滤波器的带宽
公开(公告)号：WO2008048744A3
公开(公告)日：2008-07-03
申请号：PCT/US2007077169
申请日：2007-08-30
申请人： FREESCALE SEMICONDUCTOR INC , RAHMAN MAHIBUR , PARKES JOHN J , RICHES JAMES J
发明人： RAHMAN MAHIBUR , PARKES JOHN J , RICHES JAMES J
IPC分类号： H04B1/66
CPC分类号： H04B1/30 , H03H11/1256 , H03H11/1291 , H03H2210/012 , H03H2210/015 , H03H2210/025 , H03H2210/036
摘要： A digital tuning system (250) for changing a cutoff frequency of an analog filter (132) includes digital synthesizers (292 and 294) for producing a two-tone calibration signal (196) applied to an input of the filter after a quality factor of the filter is increased The filter includes at least one R/C circuit with two resistors (304 and 306) for changing the quality factor and arrays (308 and 310) of capacitors for changing the cutoff frequency The amplitude of the magnitude responses (409 and 411 ) of the filter to each tone (405 and 407) is measured by a two discrete Fourier transform single-frequency bin power detection circuits 10 (253 and 254) while the filter is sequenced through a plurality of capacitance settings An optimal capacitance for the R/C circuit is selected by comparing, to a pre¬ selected value, a difference between the responses of the filter to each tone, for each capacitance setting.
摘要翻译：用于改变模拟滤波器（132）的截止频率的数字调谐系统（250）包括数字合成器（292和294），用于产生应用于滤波器的输入的双色调校信号（196）滤波器增加滤波器包括至少一个具有两个电阻器（304和306）的R / C电路，用于改变用于改变截止频率的电容器的品质因子和阵列（308和310）。幅度响应的幅度（409和 411和滤波器对于每个音调（405和407）的测量是通过两个离散的傅里叶变换单频箱功率检测电路10（253和254）来测量的，而滤波器通过多个电容设置进行排序。对于每个电容设置，通过将滤波器的响应与每个音调的差值与预选值进行比较来选择R / C电路。

2. 发明申请

WO02056470A1 ACTIVE FILTER CIRCUIT WITH DYNAMICALLY MODIFIABLE GAIN 审中-公开
标题翻译：具有动态可变增益的主动滤波电路
公开(公告)号：WO02056470A1
公开(公告)日：2002-07-18
申请号：PCT/US2002/004669
申请日：2002-01-10
IPC分类号： H03B1/00 , H03F1/00 , H03G1/04 , H03G3/00 , H03G5/00 , H03G7/00 , H03H11/04 , H03H11/12 , H03K5/00
CPC分类号： H03G1/04 , H03G3/001 , H03G7/00 , H03H11/04 , H03H11/1252 , H03H11/1256 , H03H11/126 , H03H11/1291
摘要： A signal processing system (100) comprises an input terminal (102), and a main path having a main filter input gain unit (126) coupled to said input terminal (102), a main filter (132) and an output gain unit (138). An auxiliary path includes an auxiliary filter input gain unit (106) coupled to the input terminal (102), an auxiliary filter (112) and an auxiliary filter output gain unit (118). An adder (144) is coupled to the output gain units (118, 138) for generating an output signal to an output terminal (148). The gains of the gain units are adjusted by a control unit (18) responsive to a detecting signal from a detector (160).
摘要翻译：信号处理系统（100）包括输入端（102），以及具有耦合到所述输入端（102）的主滤波器输入增益单元（126）的主路径，主滤波器（132）和输出增益单元 138）。辅助路径包括耦合到输入端子（102）的辅助滤波器输入增益单元（106），辅助滤波器（112）和辅助滤波器输出增益单元（118）。加法器（144）耦合到输出增益单元（118,138），用于产生到输出端子（148）的输出信号。响应于来自检测器（160）的检测信号，控制单元（18）调整增益单元的增益。

3. 发明申请

WO2007119264A1 入力インピーダンス回路及び低域通過フィルタ回路审中-公开
标题翻译：输入阻抗电路和低通滤波电路
公开(公告)号：WO2007119264A1
公开(公告)日：2007-10-25
申请号：PCT/JP2006/305523
申请日：2006-03-20
申请人：富士通株式会社 , 山▲崎▼ 博
发明人：山▲崎▼ 博
IPC分类号： H03H11/04 , H03H11/12
CPC分类号： H03H11/46 , H03H11/08 , H03H11/1252 , H03H11/1256
摘要：　入力端子及び反転出力端子を有する第１の微分回路（２０１ａ）と、第１の微分回路の反転出力端子及び入力端子間に接続される第１の容量（２０２ａ）とを有することを特徴とする入力インピーダンス回路が提供される。また、上記の入力インピーダンス回路と、入力インピーダンス回路内の第１の微分回路の入力端子に接続されるフィルタ出力端子と、電圧信号源及びフィルタ出力端子間に接続されるフィルタ抵抗とを有することを特徴とする低域通過フィルタ回路が提供される。
摘要翻译：一种输入阻抗电路，其特征在于包括具有输入端和反相输出端的第一微分电路（201a）和连接在反相输出端和第一微分电路的输入端之间的第一电容（202a）。一种低通滤波器电路，其特征在于包括输入阻抗电路，与输入阻抗电路中的第一微分电路的输入端相连的滤波器输出端和连接在电压信号源与滤波器输出端之间的滤波电阻，也提供。

4. 发明申请

WO02056558A9 ACTIVE FILTER CIRCUIT WITH DYNAMICALLY MODIFIABLE INTERNAL GAIN 审中-公开
公开(公告)号：WO02056558A9
公开(公告)日：2002-12-05
申请号：PCT/US0204668
申请日：2002-01-10
申请人： UNIV COLUMBIA , PALASKAS GEORGE , TSIVIDIS YANNIS , TOTH LASZLO
发明人： PALASKAS GEORGE , TSIVIDIS YANNIS , TOTH LASZLO
IPC分类号： H03B1/00 , H03F1/00 , H03G1/04 , H03G3/00 , H03G5/00 , H03G7/00 , H03H11/04 , H03H11/12 , H03K5/00 , H04L27/22
CPC分类号： H03G1/04 , H03G3/001 , H03G7/00 , H03H11/04 , H03H11/1252 , H03H11/1256 , H03H11/126 , H03H11/1291
摘要： Techniques are provided for the implementation of a signal processing circuit (100) which expands the dynamic range of the signal processing circuit (100) without interrupting the output of the circuit. The techniques can receive an input signal (104), proce ss the signal (104) through one of a plurality of dynamically modifiable signal processing circuits, and switch (130) to processing the signal through another of the plurality of signal processing circuits without disturbing the output of the system.

5. 发明申请

WO2008048744A2 CONTROLLING THE BANDWIDTH OF AN ANALOG FILTER 审中-公开
标题翻译：控制模拟滤波器的带宽
公开(公告)号：WO2008048744A2
公开(公告)日：2008-04-24
申请号：PCT/US2007/077169
申请日：2007-08-30
申请人： FREESCALE SEMICONDUCTOR INC. , RAHMAN, Mahibur , PARKES, John, J. , RICHES, James J.
发明人： RAHMAN, Mahibur , PARKES, John, J. , RICHES, James J.
IPC分类号： H04B1/06 , H04B1/10
CPC分类号： H04B1/30 , H03H11/1256 , H03H11/1291 , H03H2210/012 , H03H2210/015 , H03H2210/025 , H03H2210/036
摘要： A digital tuning system (250) for changing a cutoff frequency of an analog filter (132) includes digital synthesizers (292 and 294) for producing a two-tone calibration signal (196) applied to an input of the filter after a quality factor of the filter is increased. The filter includes at least one R/C circuit with two resistors (304 and 306) for changing the quality factor and arrays (308 and 310) of capacitors for changing the cutoff frequency. The amplitude of the magnitude responses (409 and 411) of the filter to each tone (405 and 407) is measured by a two discrete Fourier transform single-frequency bin power detection circuits (253 and 254) while the filter is sequenced through a plurality of capacitance settings. An optimal capacitance for the R/C circuit is selected by comparing, to a pre-selected value, a difference between the responses of the filter to each tone, for each capacitance setting.
摘要翻译：用于改变模拟滤波器（132）的截止频率的数字调谐系统（250）包括数字合成器（292和294），用于产生应用于滤波器的输入的双色调校信号（196）过滤器增加。滤波器包括至少一个R / C电路，其具有用于改变用于改变截止频率的电容器的品质因数和阵列（308和310）的两个电阻器（304和306）。滤波器对每个音调（405和407）的幅度响应（409和411）的幅度通过两个离散的傅里叶变换单频率二次谐波频域功率检测电路（253和254）来测量，而滤波器通过多个的电容设置。对于每个电容设置，通过将滤波器的响应与每个音调的差值与预选值进行比较来选择R / C电路的最佳电容。

6. 发明申请

WO2005060095A1 COMPLEX FILTER WITH HIGHER ORDER POLE 审中-公开
标题翻译：具有较高订购量的复杂过滤器
公开(公告)号：WO2005060095A1
公开(公告)日：2005-06-30
申请号：PCT/US2004/041204
申请日：2004-12-10
申请人： DSP GROUP INC.
发明人： HARVEY, Jackson
IPC分类号： H03H11/12
CPC分类号： H03H11/1217 , H03H11/1256 , H03H2011/0494
摘要： Pairs of second-order filters with feedback and cross coupling may be used to implement pairs of complex poles. The cross coupling may be frequency-dependent cross coupling or frequency-independent cross coupling. Frequency independent cross coupling may include coupling an internal node of a biquad filter. The pairs of second-order filters can be used together to form a complex filter. The complex filter can be used to readily provide higher order poles. The resulting complex filter can achieve higher order poles while offering reduced circuit complexity.
摘要翻译：具有反馈和交叉耦合的二阶滤波器可用于实现成对的复极。交叉耦合可以是频率依赖的交叉耦合或频率无关的交叉耦合。频率无关的交叉耦合可以包括耦合双二阶滤波器的内部节点。一对二阶滤波器可以一起使用以形成复杂滤波器。复合滤波器可用于容易地提供高阶极点。所得到的复合滤波器可以实现更高阶的极点，同时提供降低的电路复杂度。

7. 发明申请

WO02056558A2 ACTIVE FILTER CIRCUIT WITH DYNAMICALLY MODIFIABLE INTERNAL GAIN 审中-公开
标题翻译：主动滤波电路具有动态可修改内部增益
公开(公告)号：WO02056558A2
公开(公告)日：2002-07-18
申请号：PCT/US0204668
申请日：2002-01-10
申请人： UNIV COLUMBIA , PALASKAS GEORGE , TSIVIDIS YANNIS , TOTH LASZLO
发明人： PALASKAS GEORGE , TSIVIDIS YANNIS , TOTH LASZLO
IPC分类号： H03B1/00 , H03F1/00 , H03G1/04 , H03G3/00 , H03G5/00 , H03G7/00 , H03H11/04 , H03H11/12 , H03K5/00 , H04L27/22
CPC分类号： H03G1/04 , H03G3/001 , H03G7/00 , H03H11/04 , H03H11/1252 , H03H11/1256 , H03H11/126 , H03H11/1291
摘要： Techniques are provided for the implementation of a signal processing circuit (100) which expands the dynamic range of the signal processing circuit (100) without interrupting the output of the circuit. The techniques can receive an input signal (104), proce ss the signal (104) through one of a plurality of dynamically modifiable signal processing circuits, and switch (130) to processing the signal through another of the plurality of signal processing circuits without disturbing the output of the system.
摘要翻译：提供技术用于实现信号处理电路（100），信号处理电路（100）扩展信号处理电路（100）的动态范围，而不中断电路的输出。这些技术可以接收输入信号（104），通过多个可动态修改的信号处理电路中的一个处理信号（104），以及开关（130），以通过多个信号处理电路中的另一个来处理该信号而不受干扰系统的输出。

8. 发明申请

WO2013151591A1 METHOD AND APPARATUS FOR SIGNAL FILTERING AND FOR IMPROVING PROPERTIES OF ELECTRONIC DEVICES 审中-公开
标题翻译：用于信号滤波和改善电子设备性能的方法和装置
公开(公告)号：WO2013151591A1
公开(公告)日：2013-10-10
申请号：PCT/US2012/071486
申请日：2012-12-21
申请人： AVATEKH, INC. , NIKITIN, Alexei, V.
发明人： NIKITIN, Alexei, V.
IPC分类号： G01R29/02
CPC分类号： G06G7/02 , G01R29/02 , H03H7/0153 , H03H11/1256 , H03H11/1291 , H03H11/24 , H03H21/0001 , H03H2210/043
摘要： The present invention relates to nonlinear signal processing, and, in particular, to adap¬ tive nonlinear filtering of real-, complex-, and vector- valued signals utilizing analog Nonlinear Differential Limiters (NDLs), and to adaptive real-time signal conditioning, processing, analy¬ sis, quantification, comparison, and control. More generally, this invention relates to methods, processes and apparatus for real-time measuring and analysis of variables, and to generic mea¬ surement systems and processes. This invention also relates to methods and corresponding apparatus for measuring which extend to different applications and provide results other than instantaneous values of variables. The invention further relates to post-processing analysis of measured variables and to statistical analysis. The NDL-based filtering method and apparatus enable improvements in the overall properties of electronic devices including, but not limited to, improvements in performance, reduction in size, weight, cost, and power consumption, and, in particular for wireless devices, NDLs enable improvements in spectrum usage efficiency.
摘要翻译：本发明涉及非线性信号处理，特别是涉及使用模拟非线性差分限制器（NDL）对自适应实时信号调制的实数，复数和向量值信号进行自适应非线性滤波，处理，分析，量化，比较和控制。更一般地，本发明涉及用于实时测量和分析变量的方法，过程和装置，以及通用测量系统和过程。本发明还涉及用于测量的方法和相应的装置，其延伸到不同的应用并且提供除变量的瞬时值之外的结果。本发明还涉及测量变量的后处理分析和统计分析。基于NDL的滤波方法和装置能够改进电子设备的整体特性，包括但不限于性能的改善，尺寸，重量，成本和功耗的减小，特别是对于无线设备，NDL使得能够频谱使用效率的提高。

9. 发明申请

WO2011152896A1 BROADBAND ANALOG RADIO-FREQUENCY COMPONENTS 审中-公开
标题翻译：宽带模拟无线电频率组件
公开(公告)号：WO2011152896A1
公开(公告)日：2011-12-08
申请号：PCT/US2011/024542
申请日：2011-02-11
申请人： NEWLANS, INC. , GUPTA, Dev, V. , LAI, Zhiguo
发明人： GUPTA, Dev, V. , LAI, Zhiguo
IPC分类号： H03F3/45 , H03H11/04 , H03H11/24 , H04L25/03
CPC分类号： H03F3/45183 , H03F1/223 , H03F3/19 , H03F3/45188 , H03F3/45197 , H03F3/45201 , H03F2200/264 , H03F2200/36 , H03F2203/45318 , H03F2203/45374 , H03F2203/45644 , H03F2203/45686 , H03F2203/45702 , H03H7/24 , H03H7/25 , H03H7/482 , H03H7/487 , H03H11/1256 , H03H11/53 , H03H2210/017 , H03H2210/021 , H03H2210/028 , H03H2210/036 , H03H2210/04
摘要： Broadband analog radio-frequency devices can be used to create building blocks for scalable analog signal processors that operate over bandwidths of 50 MHz to 20 GHz or more. Example devices include integrators (transconductors), digitally controlled attenuators, buffers, and scalable summers implemented using deep sub-micron CMOS technology. Because the devices are implemented in CMOS, the ratio of trace/component size to signal wavelength is about the same as that of low-frequency devices implemented in printed circuit boards. Combining this scaling with high gain/high bandwidth enables implementation of feedback and programmability for broadband analog signal processing.
摘要翻译：宽带模拟射频设备可用于为可扩展的模拟信号处理器创建构建块，该处理器的工作频率可达50 MHz至20 GHz或更高。示例器件包括使用深亚微米CMOS技术实现的积分器（跨导体），数字控制衰减器，缓冲器和可扩展的夏季。由于器件是用CMOS实现的，所以迹线/器件尺寸与信号波长的比率与印刷电路板中实现的低频器件的比率大致相同。将此扩展与高增益/高带宽相结合，可实现宽带模拟信号处理的反馈和可编程性。

10. 发明申请

WO2010048233A1 TUNABLE FILTER WITH GAIN CONTROL CIRCUIT 审中-公开
标题翻译：带增益控制电路的滤波器
公开(公告)号：WO2010048233A1
公开(公告)日：2010-04-29
申请号：PCT/US2009/061386
申请日：2009-10-20
申请人： QUALCOMM INCORPORATED , WANG, Cheng-Han , PAN, Tzu-Wang
发明人： WANG, Cheng-Han , PAN, Tzu-Wang
IPC分类号： H03H11/12 , H03F3/45 , H04B1/10
CPC分类号： H03H11/1291 , H03H11/1256
摘要： An apparatus (200) includes a filter (220) and a gain control circuit (250). The filter (220) receives and filters an input signal and provides an output signal in a first mode and operates as part of an oscillator in a second mode. The gain control circuit (250) varies the amplitude of an oscillator signal from the filter (220) in the second mode, e.g., by adjusting at least one variable gain element within the filter (220) in the oscillator second mode to obtain a target amplitude and/or non rail- to-rail signal swing for the oscillator signal. The apparatus (200) may further include a bandwidth control circuit (280) to adjust the bandwidth of the filter (220) in the second mode. The bandwidth control circuit (280) receives the oscillator signal, determines a target oscillation frequency corresponding to a selected bandwidth for the filter, and adjusts at least one circuit element (312, 314, 316, 318, 322, 324) within the filter to obtain the target oscillation frequency.
摘要翻译：装置（200）包括滤波器（220）和增益控制电路（250）。滤波器（220）接收和滤波输入信号并提供处于第一模式的输出信号，并且在第二模式中作为振荡器的一部分进行操作。增益控制电路（250）在第二模式中改变来自滤波器（220）的振荡器信号的振幅，例如通过在振荡器第二模式中调整滤波器（220）内的至少一个可变增益元件以获得目标用于振荡器信号的振幅和/或非轨至轨信号摆幅。装置（200）还可以包括带宽控制电路（280），以在第二模式中调整滤波器（220）的带宽。带宽控制电路（280）接收振荡器信号，确定与滤波器的选定带宽相对应的目标振荡频率，并且调整滤波器内的至少一个电路元件（312,314,316,318,322,324）至获得目标振荡频率。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式