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1. 发明授权

US09698738B2 Bandpass filter providing wide gain control range 有权
公开(公告)号：US09698738B2
公开(公告)日：2017-07-04
申请号：US15004474
申请日：2016-01-22
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Seon-Ho Han , Cheon-Soo Kim , Nam Nguyen Hoai , Ki-Su Kim
IPC分类号： H03F1/32 , H03H11/04 , H03F3/193 , H03F3/45 , H03G5/28
CPC分类号： H03F1/3241 , H03F1/3211 , H03F3/193 , H03F3/45179 , H03F3/45475 , H03F2200/451 , H03G5/28 , H03H11/0466 , H03H11/0472
摘要： A bandpass filter that provides a wide gain control range is provided. The bandpass filter performs channel filtering and gain control while maintaining the bandpass characteristic of the bandpass filter. The bandpass filter enables gain control for a wide signal amplitude range while maintaining performance characteristics, such as an out-of-band attenuation ratio capable of high linearity and good pass-band flatness.

2. 发明授权

US09401694B2 Operational transconductance amplifier, operational transconductance amplifier-capacitor filter and high order reconfigurable analog filter 有权
标题翻译：工作跨导放大器，运算跨导放大器 - 电容滤波器和高阶可重构模拟滤波器
公开(公告)号：US09401694B2
公开(公告)日：2016-07-26
申请号：US14453631
申请日：2014-08-07
申请人： National Taiwan University of Science and Technology
发明人： Sheng-Yu Peng , Hung-Yu Shih , Min-Rui Lai , Chiang-His Lee , Tzu-Yun Wang
IPC分类号： G06G7/26 , H03H11/04 , H03F1/02 , H03F1/32 , H03F3/45
CPC分类号： H03H11/0422 , H03F1/0205 , H03F1/3211 , H03F3/45183 , H03F3/45237 , H03F3/4565 , H03F2203/45134 , H03F2203/45288 , H03H11/0433 , H03H11/0472
摘要： An operational transconductance amplifier includes a fully-differential amplifying circuit, a bias driving circuit, and a common mode feedback circuit. The fully-differential amplifying circuit is configured for receiving a differential input voltage and providing a differential output voltage. The fully-differential amplifying circuit includes a plurality of diffusor-differential-pair circuits. The bias driving circuit is configured for providing at least one first bias current to drive the fully-differential amplifying circuit and adjust the transconductance of the transconductance amplifier. The common mode feedback circuit is configured for stabilizing the differential output voltage. An operational transconductance amplifier-capacitor (OTA-C) filter and a high order filter are disclosed herein as well.
摘要翻译：运算跨导放大器包括全差分放大电路，偏置驱动电路和共模反馈电路。全差分放大电路被配置为接收差分输入电压并提供差分输出电压。全差分放大电路包括多个扩散差分对电路。偏置驱动电路被配置为提供至少一个第一偏置电流来驱动全差分放大电路并调节跨导放大器的跨导。共模反馈电路被配置为稳定差分输出电压。本文还公开了一种工作跨导放大器 - 电容器（OTA-C）滤波器和高阶滤波器。

3. 发明授权

US09300246B2 Resonator having distributed transconductance elements 有权
标题翻译：具有分布式跨导元件的谐振器
公开(公告)号：US09300246B2
公开(公告)日：2016-03-29
申请号：US14189596
申请日：2014-02-25
申请人： International Business Machines Corporation
发明人： Mark A. Ferriss , Daniel J. Friedman , Alexander V. Rylyakov , Bodhisatwa Sadhu , Alberto Valdes Garcia
IPC分类号： H03L7/00 , H03B5/12 , H03L7/093 , H03H19/00 , H03H11/46 , H03H11/04
CPC分类号： H03B5/1265 , H03B5/00 , H03B5/12 , H03B5/1206 , H03H11/0422 , H03H11/0472 , H03H11/46 , H03H19/00 , H03H19/004 , H03L7/093
摘要： An apparatus comprises a resonator including a plurality of switched impedances spatially distributed within the resonator and a corresponding plurality of transconductance elements distributed within respective distances among the switched impedances. The resonator has a given desired resonant frequency and a given amplitude of response. Combined pairs of the switched impedances and transconductance elements have respective parasitic resonant frequencies which are higher than the given desired resonant frequency and have respective amplitudes of response which are lower than the given amplitude of response. The apparatus may be a voltage controlled oscillator or an active filter.
摘要翻译：一种装置包括谐振器，其包括在谐振器内空间分布的多个开关阻抗以及分布在开关阻抗之间的相应距离内的对应的多个跨导元件。谐振器具有给定的期望谐振频率和给定的响应振幅。组合成对的开关阻抗和跨导元件具有高于给定期望谐振频率的各自的寄生谐振频率，并具有低于给定的响应振幅的响应幅度。该装置可以是压控振荡器或有源滤波器。

4. 发明申请

US20150200648A1 OPERATIONAL TRANSCONDUCTANCE AMPLIFIER, OPERATIONAL TRANSCONDUCTANCE AMPLIFIER-CAPACITOR FILTER AND HIGH ORDER RECONFIGURABLE ANALOG FILTER 有权
标题翻译：运算放大器，运算放大器电容滤波器和高阶可重构模拟滤波器
公开(公告)号：US20150200648A1
公开(公告)日：2015-07-16
申请号：US14453631
申请日：2014-08-07
申请人： National Taiwan University of Science and Technology
发明人： Sheng-Yu PENG , Hung-Yu SHIH , Min-Rui LAI , Chiang-His LEE , Tzu-Yun WANG
IPC分类号： H03H11/04 , H03F1/02 , H03F3/45 , H03H11/12
CPC分类号： H03H11/0422 , H03F1/0205 , H03F1/3211 , H03F3/45183 , H03F3/45237 , H03F3/4565 , H03F2203/45134 , H03F2203/45288 , H03H11/0433 , H03H11/0472
摘要： An operational transconductance amplifier includes a fully-differential amplifying circuit, a bias driving circuit, and a common mode feedback circuit. The fully-differential amplifying circuit is configured for receiving a differential input voltage and providing a differential output voltage. The fully-differential amplifying circuit includes a plurality of diffusor-differential-pair circuits. The bias driving circuit is configured for providing at least one first bias current to drive the fully-differential amplifying circuit and adjust the transconductance of the transconductance amplifier. The common mode feedback circuit is configured for stabilizing the differential output voltage. An operational transconductance amplifier-capacitor (OTA-C) filter and a high order filter are disclosed herein as well.
摘要翻译：运算跨导放大器包括全差分放大电路，偏置驱动电路和共模反馈电路。全差分放大电路被配置为接收差分输入电压并提供差分输出电压。全差分放大电路包括多个扩散差分对电路。偏置驱动电路被配置为提供至少一个第一偏置电流来驱动全差分放大电路并调节跨导放大器的跨导。共模反馈电路被配置为稳定差分输出电压。本文还公开了一种工作跨导放大器 - 电容器（OTA-C）滤波器和高阶滤波器。

5. 发明授权

US08762094B2 Method for calibrating frequency of gm-C filter and devices using the method 有权
标题翻译：使用该方法校准gm-C滤波器和器件的频率的方法
公开(公告)号：US08762094B2
公开(公告)日：2014-06-24
申请号：US12984223
申请日：2011-01-04
申请人： Yun-Cheol Han
发明人： Yun-Cheol Han
IPC分类号： G06F19/00 , H03H11/12
CPC分类号： H03H11/1291 , H03H11/0472 , H03H2210/023 , H03H2210/04
摘要： A method of calibrating the frequency of a gm-C filter is provided. The method includes generating, by a frequency calibration circuit, a calibration code capable of tuning a cut-off frequency of the gm-C filter according to a frequency of an oscillation signal that is output from a gm-C oscillator and indicates a process distribution and a reference code, determining, by the frequency calibration circuit, whether the calibration code exists within a range of a reference code, and outputting, by the frequency calibration circuit, the calibration code to the gm-C filter or generating a variable current to simultaneously tune transconductance of the gm-C oscillator and transconductance of the gm-C filter, according to a result of the determination.
摘要翻译：提供了一种校准gm-C滤波器频率的方法。该方法包括通过频率校准电路产生能够根据从gm-C振荡器输出的振荡信号的频率来调谐gm-C滤波器的截止频率的校准码，并指示处理分布以及参考码，通过频率校准电路确定校准代码是否存在于参考码的范围内，并且通过频率校准电路将校准码输出到gm-C滤波器或产生可变电流根据测定结果同时调节gm-C振荡器的跨导和gm-C滤波器的跨导。

6. 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。

7. 发明申请

US20110316628A1 COMPLIMENTARY SINGLE-ENDED-INPUT OTA-C UNIVERSAL FILTER STRUCTURES 失效
标题翻译：合成单端输入OTA-C通用滤波器结构
公开(公告)号：US20110316628A1
公开(公告)日：2011-12-29
申请号：US13168777
申请日：2011-06-24
申请人： Chun-Ming CHANG , Shu-Hui Tu
发明人： Chun-Ming CHANG , Shu-Hui Tu
IPC分类号： H03F3/45
CPC分类号： H03F3/45475 , H03F3/211 , H03F2200/405 , H03F2203/21142 , H03F2203/21145 , H03F2203/21175 , H03F2203/45544 , H03F2203/45548 , H03F2203/45631 , H03H11/0433 , H03H11/0455 , H03H11/0472 , H03H11/1291 , H03H11/32 , H03H11/34
摘要： A complimentary single-ended-input OTA-C universal filter structures in terms of integrated circuits is provided. The integrated circuit comprises a plurality of amplifiers and a plurality of capacitors. In some capacitors, one electrode is electrically connected to the positive input of its corresponding amplifier, and the other electrode can be electrically connected to an electrical source. In addition, the negative input of one amplifier is electrically connected to the negative input of another amplifier. Besides, there are a head amplifier and a tail amplifier. The output of the head amplifier is electrically connected to the negative input of the head amplifier, and the positive input of the tail amplifier can be electrically connected to an electrical source.
摘要翻译：提供了集成电路方面的免费单端输入OTA-C通用滤波器结构。集成电路包括多个放大器和多个电容器。在一些电容器中，一个电极电连接到其对应的放大器的正输入端，另一个电极可以电连接到电源。此外，一个放大器的负输入电连接到另一放大器的负输入。此外，还有头放大器和尾放大器。头放大器的输出电连接到头放大器的负输入，并且尾放大器的正输入端可以电连接到电源。

8. 发明申请

US20110025411A1 Apparatus and Method for Tuning a GM-C Filter 有权
标题翻译：用于调整GM-C滤波器的装置和方法
公开(公告)号：US20110025411A1
公开(公告)日：2011-02-03
申请号：US12936494
申请日：2009-06-11
申请人： Francesco Piazza , Claudio Cantoro
发明人： Francesco Piazza , Claudio Cantoro
IPC分类号： H03H11/12
CPC分类号： H03H11/1291 , H03H11/0433 , H03H11/0472 , H03H2210/023
摘要： An apparatus to control a tuneable Gm-C filter, including and a filter that can be reconfigured as a free running oscillator by toggling the feedback sign of an output amplifier (304), a digital controller (42), sensitive to the output of the filter in the calibration configuration, and a DAC (44) to provide an analogue control signal (48) to the gm inputs of the transconductance amplifiers (310, 320) composing the filter.
摘要翻译：一种用于控制可调Gm-C滤波器的装置，包括可以通过切换输出放大器（304）的反馈符号的可重新配置为自由振荡器的滤波器，数字控制器（42），其对于滤波器，以及DAC（44），以向组成滤波器的跨导放大器（310,320）的gm输入端提供模拟控制信号（48）。

9. 发明申请

US20100188143A1 Bias circuit, and gm-C filter circuit and semiconductor integrated circuit each including the same 审中-公开
标题翻译：偏置电路和gm-C滤波电路及半导体集成电路各自包含
公开(公告)号：US20100188143A1
公开(公告)日：2010-07-29
申请号：US12591815
申请日：2009-12-02
申请人： Teisuke Kishikawa
发明人： Teisuke Kishikawa
IPC分类号： H03K5/00
CPC分类号： H03H11/0472 , H03F3/45475 , H03F2203/45134 , H03F2203/45138 , H03H11/0433 , H03H2210/021
摘要： A bias circuit, includes: a first positive channel Metal Oxide Semiconductor transistor forming a first current source; a second positive channel Metal Oxide Semiconductor transistor composing a current mirror circuit of the first positive channel Metal Oxide Semiconductor transistor and forming a second current source; a first negative channel Metal Oxide Semiconductor transistor having a drain to which a current is supplied from the first current source; a second negative channel Metal Oxide Semiconductor transistor composing a current mirror circuit together with the first negative channel Metal Oxide Semiconductor transistor, and having a drain to which a current is supplied from the second current source; and a resistor connected between a source of the second negative channel Metal Oxide Semiconductor transistor and a ground; wherein a resistance component for gm adjustment is connected between a source of the first negative channel Metal Oxide Semiconductor transistor and the ground.
摘要翻译：偏置电路包括：形成第一电流源的第一正通道金属氧化物半导体晶体管; 构成第一正通道金属氧化物半导体晶体管的电流镜电路并形成第二电流源的第二正通道金属氧化物半导体晶体管; 第一负沟道金属氧化物半导体晶体管，具有从第一电流源供给电流的漏极; 与第一负沟道金属氧化物半导体晶体管一起构成电流镜电路的第二负沟道金属氧化物半导体晶体管，具有从第二电流源供给电流的漏极; 以及连接在第二负极沟道金属氧化物半导体晶体管的源极与地之间的电阻器; 其中用于调整gm的电阻分量连接在第一负极沟道金属氧化物半导体晶体管的源极与地之间。

10. 发明申请

US20100176847A1 VOLTAGE-CURRENT CONVERTER AND FILTER CIRCUIT USING SAME 有权
标题翻译：使用电压电流转换器和滤波电路
公开(公告)号：US20100176847A1
公开(公告)日：2010-07-15
申请号：US12602548
申请日：2008-06-04
申请人： Masaki Kitsunezuka , Shinichi Hori
发明人： Masaki Kitsunezuka , Shinichi Hori
IPC分类号： H02M11/00
CPC分类号： H03G1/0088 , H03H11/0427 , H03H11/0433 , H03H11/0472
摘要： The voltage-current converter of the present invention includes a converter input terminal, a converter output terminal, a voltage-current conversion unit for converting voltage that is applied as input to the converter input terminal to current, and a current extraction unit for intermittently extracting current from the output terminal of the voltage-current conversion unit and supplying this current as output from the converter output terminal.
摘要翻译：本发明的电压 - 电流转换器包括转换器输入端子，转换器输出端子，用于将作为输入端施加到转换器输入端子的电压转换为电流的电压 - 电流转换单元，以及用于间歇地提取的电流提取单元从电压 - 电流转换单元的输出端子提供电流，并将该电流作为转换器输出端子的输出。

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