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1. 发明授权

US10637490B2 Method and apparatus for nonlinear filtering and for mitigation of interference 有权
公开(公告)号：US10637490B2
公开(公告)日：2020-04-28
申请号：US16383782
申请日：2019-04-15
申请人： Alexei V. Nikitin
发明人： Alexei V. Nikitin
IPC分类号： H03M1/06 , H03H17/02 , H03M3/00
CPC分类号： H03M1/0626 , H03H17/0219 , H03M3/344 , H03M3/368 , H03M3/43 , H03M3/438 , H03M3/444 , H03M3/456 , H03M3/458 , H03M3/476 , H03H17/0223 , H03H17/0261 , H03H2017/0298
摘要： Method and apparatus for nonlinear signal processing include mitigation of outlier noise in the process of analog-to-digital conversion and adaptive real-time signal conditioning, processing, analysis, quantification, comparison, and control. Methods, processes and apparatus for real-time measuring and analysis of variables include statistical analysis and generic measurement systems and processes which are not specially adapted for any specific variables, or to one particular environment. Methods and corresponding apparatus for mitigation of electromagnetic interference, for improving properties of electronic devices, and for improving and/or enabling coexistence of a plurality of electronic devices include post-processing analysis of measured variables and post-processing statistical analysis.

2. 发明授权

US09985809B2 Dynamic range of wideband RF front end using delta sigma converters with envelope tracking and injected digitally equalized transmit signal 有权
公开(公告)号：US09985809B2
公开(公告)日：2018-05-29
申请号：US15103310
申请日：2015-11-06
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Timothy J. Talty , Cynthia D. Baringer , Mohiuddin Ahmed , Albert E. Cosand , James Chingwei Li , Peter Petre , Zhiwei A. Xu , Yen-Cheng Kuan
IPC分类号： H04B1/525 , H04L27/00 , H04B14/06 , H03M3/00 , H04B1/18
CPC分类号： H04L27/0002 , H03M3/438 , H03M3/464 , H04B1/18 , H04B1/525 , H04B14/06
摘要： A cellular radio architecture that includes a programmable bandpass sampling radio frequency front-end and an optimized digital baseband. The architecture includes a receiver module having a plurality of signal channels for different frequency bands, where each signal channel in the receiver module includes a receiver delta-sigma modulator that converts analog receive signals to a representative digital signal. The architecture also includes a transmitter module having a transmitter delta-sigma modulator for converting digital data bits to analog transmit signals, where the transmitter module includes a power amplifier and a switch for directing the transmit signals to one of the signal paths. The architecture also includes a dual self-cancellation circuit providing digital and analog cancellation of the transmit signal in the receiver module.

3. 发明授权

US09853843B2 Software programmable, multi-segment capture bandwidth, delta-sigma modulators for flexible radio communication systems 有权
公开(公告)号：US09853843B2
公开(公告)日：2017-12-26
申请号：US15103287
申请日：2015-11-06
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Timothy J. Talty , Cynthia D. Baringer , Mohiuddin Ahmed , Albert E. Cosand , James Chingwei Li , Peter Petre , Zhiwei A. Xu , Yen-Cheng Kuan
IPC分类号： H04B14/04 , H04L27/00 , H04B14/06 , H04B1/525 , H03M3/00 , H04B1/18
CPC分类号： H04L27/0002 , H03M3/438 , H03M3/464 , H04B1/18 , H04B1/525 , H04B14/06
摘要： A cellular radio architecture that includes a multiplexer coupled to an antenna structure and including multiple signal paths, where each signal path includes a bandpass filter that passes a different frequency band than the other bandpass filters and a circulator that provides signal isolation between the transmit signals and the receive signals. The architecture also includes a receiver module having a separate signal channel for each of the signal paths in the multiplexer, where each signal channel in the receiver module includes a receiver delta-sigma modulator that converts analog receive signals to a representative digital signal. The delta-sigma modulator includes an LC filter having a plurality of LC resonator circuits, a plurality of transconductance amplifiers and a plurality of integrator circuits, where a combination of one resonator circuit, transconductance amplifier and integrator circuit represents a two-order stage of the LC filter.

4. 发明授权

US09853658B1 Digital to analog converter circuit and digital to analog conversion method 有权
公开(公告)号：US09853658B1
公开(公告)日：2017-12-26
申请号：US15639825
申请日：2017-06-30
申请人： RICHTEK TECHNOLOGY CORPORATION
发明人： Ming-Jun Hsiao , Zong-Yi Chen
IPC分类号： H03M3/00
CPC分类号： H03M3/50 , H03M1/504 , H03M3/438 , H03M3/506
摘要： A DAC circuit includes: a PWM encoding circuit for converting a digital signal to first and second PWM signals, whereby a combination of the first and second PWM signals becomes a PWM encoded signal of at least 3 levels including a positive, a zero and a negative level, wherein the digital signal represents a number in a numerical range; and a demodulation circuit for generating the analog signal according to the first and second PWM signals. The first and second PWM signals have a minimum duty larger than 0 when the digital signal represents a middle number in the numerical range. The zero level of the combination of the first and second PWM signals has a duty which decreases as a difference between the number represented by the digital signal and the middle number increases.

5. 发明授权

US09768798B2 Delta-sigma modulator and method for signal conversion 有权
公开(公告)号：US09768798B2
公开(公告)日：2017-09-19
申请号：US15121753
申请日：2015-02-13
申请人： ams AG
发明人： Thomas Christen , Thomas Froehlich , Andreas Fitzi , Dusan Prelog
IPC分类号： H03M3/00
CPC分类号： H03M3/422 , H03M3/328 , H03M3/334 , H03M3/424 , H03M3/43 , H03M3/436 , H03M3/438 , H03M3/464
摘要： A delta-sigma modulator (10) comprises a modulator loop (11) and a code generator (12). The modulator loop (11) comprises a loop filter (18). The code generator (12) is configured to generate a generator signal (BS) that is realized as an extended Barker code. The code generator (12) comprises a generator output (23) that is coupled to the loop filter (18).

6. 发明授权

US09639203B2 Touch control detection system, delta-sigma modulator and modulating method thereof 有权
公开(公告)号：US09639203B2
公开(公告)日：2017-05-02
申请号：US14582215
申请日：2014-12-24
申请人： Novatek Microelectronics Corp.
发明人： Chih-Yuan Chang
IPC分类号： G06F3/041 , H03M3/00
CPC分类号： G06F3/0416 , H03M3/396 , H03M3/422 , H03M3/438 , H03M3/458
摘要： A touch control detection system, a delta-sigma modulator and a modulating method thereof are provided. The delta-sigma modulator includes a quantizer and N integrating units. The quantizer generates a modulating result signal. The integrating units are coupled in series. Each of the integrating receives an input signal, and each of the integrating units receives a plurality of gain parameters, N is a positive integer. The quantizer quantizes a signal on an output end of the Nth stage integrating unit according to an error signal for generating the modulating result signal. A center frequency of a noise transfer function (NTF) of the delta-sigma modulator is adjusted according to the gain parameters, and the gain parameters are determined according to a frequency of the input signal.

7. 发明申请

US20160269043A1 LOOP FILTER FOR DATA CONVERTER IN WIRELESS COMMUNICATION SYSTEM AND METHOD OF IMPLEMENTING CORRESPONDING LOOP FILTER 有权
标题翻译：无线通信系统中数据转换器的环路滤波器及实现相关环路滤波器的方法
公开(公告)号：US20160269043A1
公开(公告)日：2016-09-15
申请号：US15057793
申请日：2016-03-01
申请人： Electronics and Telecommunications Research Institute
发明人： Young Kyun CHO , Bong Hyuk PARK , Jung Hoon OH
IPC分类号： H03M3/00
CPC分类号： H03M3/44 , G06G7/18 , H03H11/0433 , H03H11/1252 , H03H11/126 , H03M3/438 , H03M3/458
摘要： Provided is a loop filter for a data converter in a wireless communication system that improves both an anti-aliasing filtering characteristic and a power consumption characteristic, the loop filter including first and third resistors sequentially connected to an input end, fourth and second resistors sequentially connected to between an inverting output end and ground, a first capacitor connected to between another end of the first resistor and one end of the fourth resistor, a second capacitor connected to between the one end of the fourth resistor and the output end, a third capacitor connected to between another end of the third resistor and the output end, and an operational amplifier, wherein an inverting end of the operational amplifier is connected to the other end of the first resistor and a non-inverting end of the operational amplifier is connected to ground to output an operational amplifier response to the output end.
摘要翻译：提供了一种用于无线通信系统中的数据转换器的环路滤波器，其改进了抗混叠滤波特性和功耗特性，该环路滤波器包括顺序地连接到输入端的第一和第三电阻器，第四和第二电阻器顺序地连接连接到所述第一电阻器的另一端和所述第四电阻器的一端之间的第一电容器，连接到所述第四电阻器的一端和所述输出端之间的第二电容器，第三电容器连接到第三电阻器的另一端和输出端之间，以及运算放大器，其中运算放大器的反相端连接到第一电阻器的另一端，并且运算放大器的非反相端连接到接地以输出对输出端的运算放大器响应。

8. 发明授权

US09240801B2 Analog-to-digital converter 有权
标题翻译：模数转换器
公开(公告)号：US09240801B2
公开(公告)日：2016-01-19
申请号：US14211233
申请日：2014-03-14
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Jan-Tore Marienborg , Gregory Arndt , Stefan Dannenberger
IPC分类号： H03M3/00 , H03M1/00 , H03M1/12
CPC分类号： H03M3/424 , H03M1/00 , H03M1/12 , H03M1/56 , H03M1/822 , H03M3/30 , H03M3/438
摘要： A delta sigma analog-to-digital converter (ADC) providing optimized performance and energy consumption. In one embodiment, a delta-sigma ADC includes a loop filter and a multi-bit quantizer. The multi-bit quantizer is coupled to the loop filter. The quantizer includes a counter, a reference voltage generator, and a comparator. The counter is configured to provide a multi-bit output value that estimates an output of the loop filter. The reference voltage generator is configured to generate a reference voltage ramp based on the output value of the counter. The comparator is coupled to the reference voltage generator to compare the reference voltage ramp to output of the loop filter.
摘要翻译：提供优化的性能和能耗的Δ-Σ模数转换器（ADC）。在一个实施例中，Δ-ΣADC包括环路滤波器和多位量化器。多位量化器耦合到环路滤波器。量化器包括计数器，参考电压发生器和比较器。计数器被配置为提供估计环路滤波器的输出的多位输出值。参考电压发生器被配置为基于计数器的输出值产生参考电压斜坡。比较器耦合到参考电压发生器，以将参考电压斜坡与环路滤波器的输出进行比较。

9. 发明申请

US20150171887A1 DELTA-SIGMA MODULATOR 有权
标题翻译： DELTA-SIGMA调制器
公开(公告)号：US20150171887A1
公开(公告)日：2015-06-18
申请号：US14548377
申请日：2014-11-20
申请人： RENESAS ELECTRONICS CORPORATION
发明人： Takashi OKUDA
IPC分类号： H03M3/00
CPC分类号： H03M3/372 , H03M3/422 , H03M3/438 , H03M3/464
摘要： A delta-sigma modulator is configured to feedback an output signal of a quantizer to an input of an integrator, and also feedback to the input of the integrator a differentiated error signal representing derivative of quantization error caused by the quantizer.
摘要翻译： Δ-Σ调制器被配置为将量化器的输出信号反馈到积分器的输入，并且还向积分器的输入反馈表示由量化器引起的量化误差的微分误差信号。

10. 发明申请

US20150171877A1 ANALOG-TO-DIGITAL CONVERTING DEVICE AND ANALOG-TO-DIGITAL CONVERTING METHOD 有权
标题翻译：模拟到数字转换器件和模拟数字转换方法
公开(公告)号：US20150171877A1
公开(公告)日：2015-06-18
申请号：US14540041
申请日：2014-11-13
申请人： MEDIATEK INC.
发明人： Yen-Chuan Huang , Chih-Hong Lou , Chi-Yun Wang , Li-Han Hung , Min-Hua Wu
IPC分类号： H03M1/00 , H03M3/00 , H03M1/46 , H03M1/06
CPC分类号： H03M1/001 , H03M1/0626 , H03M1/46 , H03M3/344 , H03M3/37 , H03M3/438 , H03M3/458
摘要： An analog-to-digital converting device includes: an integrator arranged to generate an integrating signal according to an analog input signal and a first analog feedback signal; a low-pass filter arranged to generate a first filtered signal according to the integrating signal; an analog-to-digital converter arranged to generate a digital output signal according to the first filtered signal; and a first digital-to-analog converter arranged to generate the first analog feedback signal according to the digital output signal.
摘要翻译：模数转换装置包括：积分器，被配置为根据模拟输入信号和第一模拟反馈信号产生积分信号; 低通滤波器，被布置成根据积分信号产生第一滤波信号; 一个模数转换器，被配置成根据第一滤波信号产生数字输出信号; 以及第一数模转换器，被配置为根据数字输出信号产生第一模拟反馈信号。

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