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A Positive Type DVCC-Based Universal Biquad
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作者 Takao Tsukutani Noboru Yabuki 《Journal of Physical Science and Application》 2023年第1期6-8,共3页
This paper presents a current-mode universal biquad employing only positive type DVCCs(differential voltage current conveyors).The circuit enables LP(low-pass),BP(band-pass),HP(high-pass),BS(band-stop)and AP(all-pass)... This paper presents a current-mode universal biquad employing only positive type DVCCs(differential voltage current conveyors).The circuit enables LP(low-pass),BP(band-pass),HP(high-pass),BS(band-stop)and AP(all-pass)responses by the selection and addition of the input and output currents without any component matching constraints.Moreover the circuit parametersω0 and Q can be set orthogonally adjusting the circuit components.A design example is given together with simulation results by PSPICE. 展开更多
关键词 Analogue circuit biquad characteristic DVCC CMOS technology
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A State Variable Method for the Realization of Universal Current-Mode Biquads 被引量:2
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作者 Raj Senani Kasim Karam Abdalla Data Ram Bhaskar 《Circuits and Systems》 2011年第4期286-292,共7页
A state variable method of converting single-resistance-controlled- oscillators (SRCO), into universal current-mode biquad (offering realizations of all the five standard filter functions namely, low pass, band pass, ... A state variable method of converting single-resistance-controlled- oscillators (SRCO), into universal current-mode biquad (offering realizations of all the five standard filter functions namely, low pass, band pass, high pass, notch and all pass) has been highlighted. The workability of the exemplary implementation of the derived current-mode universal biquad has been demonstrated by PSPICE simulation results based upon 0.35 μ m technology. It is expected that the proposed method can be applied to other SRCOs to generate other multifunction filter structures. 展开更多
关键词 ANALOG ELECTRONICS Circuit Theory and Design CURRENT Mode Circuits UNIVERSAL biquads CURRENT Conveyors
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VDTA Based Electronically Tunable Voltage-Mode and Trans-Admittance Biquad Filter 被引量:2
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作者 Gunjan Gupta Sajai Vir Singh Sunil Vidya Bhooshan 《Circuits and Systems》 2015年第3期93-102,共10页
In this paper, a biquad filter configuration based on two voltage differencing transconductance amplifiers (VDTAs) as newly active elements and only two capacitors as passive elements is proposed which can realize vol... In this paper, a biquad filter configuration based on two voltage differencing transconductance amplifiers (VDTAs) as newly active elements and only two capacitors as passive elements is proposed which can realize voltage-mode low pass (LP), band pass (BP), high pass (HP), band reject (BR) and all pass (AP) filtering responses using three voltage inputs. Simultaneously, the same configuration can also be used to obtain LP, BP and HP filtering responses in transadmittance-mode. The proposed biquad is capable of providing electronic control of quality factor independent of pole frequency through single transconductance parameter (biasing current). It also offers the advantage of low active and passive sensitivity. To support the theoretical analysis, the PSPICE simulation of the proposed circuit is done using 0.18 μm CMOS technology from TSMC. 展开更多
关键词 VDTA biquad FILTER VOLTAGE-MODE Trans-Admittance-Mode
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Single MO-CCCCTA-Based Electronically Tunable Current/Trans-Impedance-Mode Biquad Universal Filter 被引量:2
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作者 Sajai Vir Singh Sudhanshu Maheshwari Durg Singh Chauhan 《Circuits and Systems》 2011年第1期1-6,共6页
This paper presents an electronically tunable current/trans-impedance-mode biquad universal filter employing only single multi-output current controlled current conveyor trans-conductance amplifier (MO-CCCCTA) and two... This paper presents an electronically tunable current/trans-impedance-mode biquad universal filter employing only single multi-output current controlled current conveyor trans-conductance amplifier (MO-CCCCTA) and two grounded capacitors. The proposed filter realizes all the standard filter func-tions i.e. low pass (LP), band pass (BP) and high pass (HP), notch and all pass (AP) filters in the current form at high impedance output through appropriate selection of the input signals, without any matching conditions. Simultaneously, it can also realize all the standard filter functions in trans-impedance form from the same circuit topology. The circuit does not require inverting-type input current signal(s) and double input current signal(s) to realize all the responses in the design. The validity of proposed filter is verified through PSPICE simulations. 展开更多
关键词 UNIVERSAL CURRENT-MODE Trans-Impedance-Mode biquad FILTER
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An Active-Only Temperature-Insensitive Current-Mode Biquad Filter Based on Differentiator Structures Employing CCCCTAs 被引量:1
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作者 Supawat Lawanwisut Montree Siripruchyanun Winai Jaikla 《Circuits and Systems》 2013年第3期280-286,共7页
This article presents an active-only current-mode universal biquad filter performing three standard functions: low-pass, high-pass and band-pass function, which can be readily modified to achieve the rest functions (b... This article presents an active-only current-mode universal biquad filter performing three standard functions: low-pass, high-pass and band-pass function, which can be readily modified to achieve the rest functions (band-stop and all-pass). The circuit principle is based on active-only circuit designed by using differentiators which are constructed from current controlled current conveyor transconductance amplifier (CCCCTA) cooperating with an internally frequency compensated operational amplifier (OA). The features of the circuit are that: the pole frequency and quality factor can be independently tuned via the input bias currents and it is ideally temperature-insensitive, its circuit description is very simple, consisting of 3 CCCCTAs and 2 operational amplifiers, and the proposed circuit is very appropriate for further developing into integrated circuit architecture. The PSpice simulation results are shown. The given results agree well with the theoretical anticipation. 展开更多
关键词 Active-Only CCCCTA CURRENT-MODE biquad FILTER
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Universal Current-Controlled Current-Mode Biquad Filter Employing MO-CCCCTAs and Grounded Capacitors 被引量:1
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作者 Sajai Vir Singh Sudhanshu Maheshwari Durg Singh Chauhan 《Circuits and Systems》 2010年第2期35-40,共6页
This paper presents a universal current-controlled current-mode biquad filter employing current controlled current conveyor trans-conductance amplifiers (CCCCTAs). The proposed filter employs only three MO- CCCCTAs an... This paper presents a universal current-controlled current-mode biquad filter employing current controlled current conveyor trans-conductance amplifiers (CCCCTAs). The proposed filter employs only three MO- CCCCTAs and two grounded capacitors. The proposed filter can simultaneously realize low pass (LP), band pass (BP), high pass (HP), band reject (BR) and all pass (AP) responses in current form by choosing appropriate current output branches. In addition, the pole frequency and quality factor of the proposed filter circuit can be tuned independently and electronically over the wide range by adjusting the external bias currents. The circuit possesses low active and passive sensitivity performance. The validity of proposed filter is verified through PSPICE simulations. 展开更多
关键词 biquad CURRENT-MODE UNIVERSAL FILTER
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A Plus Type CC-Based Current-Mode Universal Biquad 被引量:1
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作者 Takao Tsukutani Noboru Yabuki 《Journal of Electrical Engineering》 2020年第1期17-20,共4页
This paper introduces a current-mode universal biquad circuit using only plus type CCs(current conveyors)(i.e.DVCCs(differential voltage current conveyors)and CCIIs(second generation current conveyors)).The circuit en... This paper introduces a current-mode universal biquad circuit using only plus type CCs(current conveyors)(i.e.DVCCs(differential voltage current conveyors)and CCIIs(second generation current conveyors)).The circuit enables LP(low-pass),BP(band-pass),HP(high-pass),BS(band-stop)and AP(all-pass)responses by the selection and/or addition of the input and output currents without any component matching constraints.Moreover the circuit parametersω0 and Q can be set orthogonally adjusting the circuit components.A design example is given together with simulation responses by PSPICE. 展开更多
关键词 Analog circuit biquad responses current conveyors CMOS technology
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A VERSATILE CURRENT-MODE BIQUAD USING OPERATIONAL AMPLIFIERS
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作者 Yuan Shiwen Lu Huibin Shi Weidong Yutaka Fukui(Yanshan University, Qinhuangdao 066004) (Tottori University, Koyama, Tottori, 680 Japan) 《Journal of Electronics(China)》 1999年第1期73-80,共8页
A versatile current-mode biquadratic filter using three operational amplifiers and nine passive elements is proposed. By suitably choosing the output branch, lowpass, bandpass, highpass, bandstop and allpass transfer ... A versatile current-mode biquadratic filter using three operational amplifiers and nine passive elements is proposed. By suitably choosing the output branch, lowpass, bandpass, highpass, bandstop and allpass transfer functions are realized simultaneously without changing the circuit configuration and elements. Two circuits, one is for low frequency application and the other for high frequency, are proposed. The center frequency, quality factor and gain constants of the circuit can be tuned independently. Simulated results show that the circuits work successfully. 展开更多
关键词 CURRENT-MODE CIRCUIT TRANSFER function biquad filter OPERATIONAL AMPLIFIER
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CM-Biquad Filter Using Single DO-VDBA
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作者 Chandra Ketu Yadav Dinesh Prasad +2 位作者 Zainab Haseeb Laxya   Mayank Kumar 《Circuits and Systems》 2018年第9期133-139,共7页
In this manuscript we present a current mode biquad using one dual output-voltage differencing buffered amplifier (DO-VDBA) and four passive components (2 grounded capacitors and 2 resistors). The proposed circuit off... In this manuscript we present a current mode biquad using one dual output-voltage differencing buffered amplifier (DO-VDBA) and four passive components (2 grounded capacitors and 2 resistors). The proposed circuit offers very low active and passive sensitivity. The filter presented here is electronically tunable, frequency of oscillation (FO) can be tuned by controlling transconductance (gm) by varying the bias current (IB) of the circuit. The workability of proposed circuit is tested using PSPICE with 180 nm TSMC CMOS process parameters. 展开更多
关键词 Current Mode biquad FILTER Dual Output-Voltage Differencing Buffered AMPLIFIER
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Switched Capacitor Biquad Filter Using CDTA
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作者 Meeti Dehran Indu Prabha Singh +1 位作者 Kalyan Singh Rabindra Kumar Singh 《Circuits and Systems》 2013年第6期438-442,共5页
A switched capacitor biquad filter using current differencing transconductance amplifier (CDTA) is presented in this paper. The proposed circuit employs only one CDTA, two virtually grounded capacitors and one switche... A switched capacitor biquad filter using current differencing transconductance amplifier (CDTA) is presented in this paper. The proposed circuit employs only one CDTA, two virtually grounded capacitors and one switched capacitor. It is a resistorless circuit, so it is beneficial to IC implementation in terms of space consideration. The proposed circuit is a second order single input multiple output (SIMO) current-mode filter. This filter can simultaneously realize all basic filter functions high pass, low pass and band pass responses without any component-matching conditions. All the active and passive sensitivities are low. The natural angular frequency (ω0) and quality factor (Q) of proposed filter can be electronically controlled. Owing to current mode operation it consumes less power. PSPICE simulation results are used to verify the theoretical analysis. 展开更多
关键词 Current Differencing TRANSCONDUCTANCE AMPLIFIER (CDTA) biquad FILTER CURRENT-MODE CIRCUIT
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Realization of a New Current Mode Second-Order Biquad Using Two Current Follower Transconductance Amplifiers (CFTAs)
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作者 Nisha Walde Syed Naseem Ahmad 《Circuits and Systems》 2015年第5期113-120,共8页
A new circuit for realization of universal current-mode filter using current Follower Transconductance Amplifiers (CFTAs) is presented. The proposed circuit realizes current-mode low pass, high pass and band pass filt... A new circuit for realization of universal current-mode filter using current Follower Transconductance Amplifiers (CFTAs) is presented. The proposed circuit realizes current-mode low pass, high pass and band pass filter functions simultaneously with a single current source at the input. The band reject and all pass filters can also be obtained from the proposed circuit without any extra hardware. The proposed circuit employs three passive grounded elements and two CFTAs. Linear electronic control of natural frequency ω0 is available in the proposed circuit. The quality factor can be independently adjusted through grounded resistor. The proposed circuit employs two grounded capacitors and a grounded resistor along with two CFTAs. The grounded resistor can be replaced by an OTA based circuit for linear electronic control of quality factor Q0. The circuit exhibits low active and passive sensitivities for ω0 and Q0. Simulation results are obtained using PSPICE software which is in conformity with the theoretical findings. 展开更多
关键词 CURRENT FOLLOWER TRANSCONDUCTANCE Amplifier (CFTA) Current-Mode CIRCUIT biquad Filter VOLTAGE-MODE CIRCUIT CURRENT CONVEYOR (CC)
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Current Processing Current Tunable Universal Biquad Filter Employing Two CCTAs and Two Grounded Capacitors
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作者 Ravindra Singh Tomar Sajai Vir Singh Durg Singh Chauhan 《Circuits and Systems》 2013年第6期443-450,共8页
This paper presents a current processing current-tunable universal biquad filter employing two current conveyor transconductance amplifiers (CCTAs) as active element and two grounded capacitors as passive element. It ... This paper presents a current processing current-tunable universal biquad filter employing two current conveyor transconductance amplifiers (CCTAs) as active element and two grounded capacitors as passive element. It realizes all the five standard filtering responses such as low pass (LP), band pass (BP), high pass (HP), band reject (BR) and all pass (AP) through appropriate selection of applied current inputs. Proposed circuit does not require minus input current signal and double input current signal to realize different filtering responses. It also does not require component matching condition to realize any filtering responses. Moreover, the circuit offers the advantage of orthogonal electronic tunability of pole-frequency and quality factor. The circuit exhibits low active and passive sensitivities. The circuit performance is verified through P-SPICE simulation software. 展开更多
关键词 biquad CURRENT-MODE UNIVERSAL FILTER CCTA
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A Novel Plus Type DVCC-Based Current-Mode Biquad
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作者 Takao Tsukutani Noboru Yabuki 《Journal of Electrical Engineering》 2019年第2期51-53,共3页
This paper presents a novel current-mode biquad using only plus type DVCCs(differential voltage current conveyors).The circuit enables LP(low-pass),BP(band-pass),HP(high-pass),BS(band-stop)and AP(all-pass)responses by... This paper presents a novel current-mode biquad using only plus type DVCCs(differential voltage current conveyors).The circuit enables LP(low-pass),BP(band-pass),HP(high-pass),BS(band-stop)and AP(all-pass)responses by the selection and/or addition of the circuit currents with no component matching constraints.Moreover the circuit parametersω0 and Q can be set orthogonally adjusting the circuit components.An achievement example is given together with simulation results by PSPICE. 展开更多
关键词 ANALOG circuits biquad RESPONSES PLUS TYPE DVCCs
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A Mixed-Mode Biquad Employing OTAs and Grounded Capacitors
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作者 Takao Tsukutani Yasutomo Kinugasa Noburu Yabuki 《Journal of Electrical Engineering》 2018年第3期151-155,共5页
This paper introduces a mixed-mode biquad employing OTAs (operational trans-conductance amplifiers) and grounded capacitors. The circuit can perform mixed-mode operation by selecting the input and output terminals. ... This paper introduces a mixed-mode biquad employing OTAs (operational trans-conductance amplifiers) and grounded capacitors. The circuit can perform mixed-mode operation by selecting the input and output terminals. Additionally, the circuit enables low-pass, band-pass, high-pass, band-stop and all-pass transfer functions suitably choosing the input terminals. The circuit parameters ω0 and Q can be tuned orthogonally through adjusting the trans-conductance gains of the OTAs. The biquad enjoys very low sensitivities with respect to the circuit active and passive components. The achievement examples are given together with simulation results by PSPICE. 展开更多
关键词 Active circuit mixed-mode operation biquad characteristics OTAs.
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有源滤波器的一种设计方法——四运放BIQUAD的应用 被引量:1
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作者 张宁 《电声技术》 北大核心 1989年第4期46-55,共10页
随着电子科学的急速发展,电子器件已向小形化、功能全的方向发展。本文介绍一种设计有源网络的实用方法,并通过实际验证,表明这套计算方法是非常有价值的。在文章中介绍了应用最为普遍的考尔切比雪夫型滤波器,因为对给定的滤波器技术要... 随着电子科学的急速发展,电子器件已向小形化、功能全的方向发展。本文介绍一种设计有源网络的实用方法,并通过实际验证,表明这套计算方法是非常有价值的。在文章中介绍了应用最为普遍的考尔切比雪夫型滤波器,因为对给定的滤波器技术要求,它所需要的阶数最低。 展开更多
关键词 滤波器 有源 biquad 四运放
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可编程模拟器件的研究与应用
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作者 韩丽英 《数字技术与应用》 2009年第12期93-96,共4页
本文介绍了lattice半导体公司推出的可编程模拟器件ispPAC10的内部结构原理及在信号调理方面的应用。详细地阐述了该控制芯片灵活、多变的放大、滤波及衰减功能,并讨论了每种功能的设计方法。
关键词 可编程模拟器件 ISPPAC biquad FILTER
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LCL型并网逆变器自适应谐振抑制 被引量:5
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作者 张奔奔 胥芳 +1 位作者 吴乐彬 艾青林 《浙江大学学报(工学版)》 EI CAS CSCD 北大核心 2016年第1期180-185,共6页
针对弱电网时在电流控制器前向通路串联陷波器的电感-电容-电感(LCL)型并网逆变器谐振抑制方法可能失效的问题,提出采用自适应陷波器的新方法.通过对基于陷波器的有源阻尼方法机理研究,得到该方法的实质是实现传递函数的零极点对消,提... 针对弱电网时在电流控制器前向通路串联陷波器的电感-电容-电感(LCL)型并网逆变器谐振抑制方法可能失效的问题,提出采用自适应陷波器的新方法.通过对基于陷波器的有源阻尼方法机理研究,得到该方法的实质是实现传递函数的零极点对消,提出采用在线检测系统谐振频率的方法实时修正陷波器的陷波频率.为了简化数字运算,将陷波器改进为可独立配置零极点的双二阶滤波器,根据所测系统的谐振频率修正PI控制器的比例系数,以保证系统的带宽及稳定性.实验证明,采用所提方案可以有效地提高LCL滤波并网逆变器的弱网适应性. 展开更多
关键词 并网逆变器 电感-电容-电感(LCL)滤波器 自适应性 有源阻尼 弱电网 双二阶滤波器
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Multifunction Filter Employing Current Differencing Buffered Amplifier
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作者 Tajinder Singh Arora Udit Rana 《Circuits and Systems》 2016年第5期543-550,共8页
This paper proposes a new filter biquad circuit, which utilizes three Current Differencing Buffered Amplifiers (CDBA), two capacitors and five resistors, and operates in the trans-resistance mode. This multi-input and... This paper proposes a new filter biquad circuit, which utilizes three Current Differencing Buffered Amplifiers (CDBA), two capacitors and five resistors, and operates in the trans-resistance mode. This multi-input and single-output multifunction filter uses only grounded capacitors. All the employed resistors are either grounded or virtually grounded, which is an important parameter for its implementation as an integrated circuit. The circuit enjoys independent tunability of angular frequency and bandwidth. The 0.5 μm technology process parameters have been utilized to test and verify the performance characteristics of the circuit using PSPICE. The non-ideal analysis and sensitivity analysis, transient response, Monte-Carlo analysis and calculations of total harmonic distortion have also been shown. 展开更多
关键词 Active Filters Current Differencing Buffered Amplifier biquadratic Filter KHN-biquad
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0.13μm CMOS宽带大动态范围六阶跨导电容低通滤波器(英文) 被引量:2
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作者 万培元 胡赛君 +2 位作者 郎伟 林平分 Yu John 《半导体技术》 CAS CSCD 北大核心 2009年第9期903-906,共4页
提出了一种适用于宽带大动态范围应用的六阶跨导电容低通滤波器。该滤波器为Chebyshev类型,采用开环级联结构来实现。通过一组开关电容阵列来补偿由工艺温度等因素引入的截止频率的偏差。实际测试结果表明,该滤波器的-3dB截止频率可调... 提出了一种适用于宽带大动态范围应用的六阶跨导电容低通滤波器。该滤波器为Chebyshev类型,采用开环级联结构来实现。通过一组开关电容阵列来补偿由工艺温度等因素引入的截止频率的偏差。实际测试结果表明,该滤波器的-3dB截止频率可调范围为30~100MHz,在500mVp-p输入信号幅度下,IM3为-48dB。电源电压为3V时,消耗电流25mA,芯片面积为0.5mm2。该滤波器采用TSMC0.13μm CMOS工艺实现。 展开更多
关键词 跨导电容滤波器 Chebyshev滤波器 低通滤波器 连续时间滤波器 CMOS 二阶节
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基于改进型CCII的电流模式多功能二阶滤波器 被引量:4
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作者 李树涛 何怡刚 吴杰 《电路与系统学报》 CSCD 1998年第1期33-37,共5页
本文给出了一种结构简单性能优良的改进型电流传送器,并提出了由该电流传送器实现的电流模式多功能双二阶滤波器。该滤波器由三个CCI±和五个无源元件构成,可以实现二阶低通、高通、带通带阻和全通滤波功能,且可以多端输出,... 本文给出了一种结构简单性能优良的改进型电流传送器,并提出了由该电流传送器实现的电流模式多功能双二阶滤波器。该滤波器由三个CCI±和五个无源元件构成,可以实现二阶低通、高通、带通带阻和全通滤波功能,且可以多端输出,电路中电阻电容全部接地,适于全集成。中心频率和品质因数的无源灵敏度很低,面向实际电路完成MOS管级的PSPICE仿真,结果表明所提出的电路方案是可行的。 展开更多
关键词 改进型 电流传送器 电流模式 滤波器
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