Current-mode all-pass filters using current differencing buffered amplifier and a new high-Q bandpass filter configuration

Toker, Ali; Özoğuz, Serdar; Çiçekoğlu, Oğüzhan; Acar, C.

doi:10.1109/82.868465

Cited by 164 publications

(76 citation statements)

References 19 publications

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“…CDU was studied as an independent building part by Vavra et al [4] and introduced as a suitable active device for synthesis of applications in [5,6]. The very-well known active devices utilizing CDU part are so-called a current differencing buffered amplifier (CDBA) [6,7,8] and a current differencing transconductance amplifier (CDTA) [6,9]. There were some attempts to extend the features of control in the frame of the CDU part.…”

Section: Introductionmentioning

confidence: 99%

Design of the simple oscillator with linear tuning and pi/4 phase shift based on emulator of the modified current differencing unit

Šotner

Jeřábek

Herencsár

et al. 2015

IEICE Electron. Express

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This paper presents a simple oscillator with 45 degrees phase shift between output signals. A Modified Current Differencing Unit (MCDU) was used for its design. The MCDU offers controllability of input resistances of current inputs and controllability of current gains. These features are not available together in the standard current differencing unit and it limits usability in some applications. The proposed oscillator allows linear electronic control of oscillation frequency and independent control of condition of oscillation with simple implementation of amplitude stabilization. The PSpice simulations and measurements in laboratory with manufactured behavioral emulator of the MCDU confirmed the expected features of the solution.

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Section: Introductionmentioning

confidence: 99%

Design of the simple oscillator with linear tuning and pi/4 phase shift based on emulator of the modified current differencing unit

Šotner

Jeřábek

Herencsár

et al. 2015

IEICE Electron. Express

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“…It finds applications in realizing high selectivity active bandpass filters, delay equalizers and quadrature oscillators [1] [2]. Several voltage mode voltage-mode first-order allpass filter configurations employing different active building blocks (ABBs) such as, current conveyors (CCIIs) [3]- [9], Operational Transconductance Amplifiers (OTAs) [10] [11], current controlled current conveyors (CCCIIs) [12]- [14], differential voltage current conveyor (DVCC) [15]- [17], differential difference current conveyors (DDCCs) [18]- [20], current differencing buffered amplifier (CDBA) [21]- [23], operational transresis-tance amplifiers (OTRAs) [24]- [26], current controlled current differencing transconductance amplifiers (CCCDTA) [27], universal voltage conveyor [28] and Fully Balanced Voltage Differencing Buffered Amplifier (FBVDBA) [29] have been reported in literature but unfortunately, these proposed configurations suffer from one or more of the following drawbacks: i) use of excessive (more than one) number of ABBs [6] [29].…”

Section: Introductionmentioning

confidence: 99%

CDDITA-Based Voltage-Mode First Order All Pass Filter Configuration

Prasad¹,

Panwar²,

Bhaskar³

et al. 2015

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This realization of a voltage-mode first order voltage-mode all pass filter (VM-APF) employing single current differencing differential input transconductance amplifier (CDDITA) as active component is presented. The proposed configuration employs one CDDITA along with two resistors and one grounded capacitor. The pole frequency and phase shift of proposed VM-APF are electronically tunable by transconductance of CDDITA. The proposed circuit is verified by SPICE simulations.

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“…Numerous first order current-mode APFs employing different types of current-mode active elements such as second generation current conveyor (CCII) [5-6, 8-9, 11, 15-16, 18, 20, 27], four terminal floating nullor (FTFN) [7], third generation current conveyor (CCIII) [12,17], Current operational amplifier (COA) [13], differential voltage current conveyor (DVCC) [14], current differencing buffered amplifier (CDBA) [10], dual-X second-generation current conveyor (DXCCII) [4,19,26] are available in the literature. Some of the current-mode all-pass filter circuits do enjoy the feature(s) of grounded components, minimum components, single active element, low-input and high-output impedances.…”

Section: Introductionmentioning

confidence: 99%

Single Active Element based Current-Mode All-Pass Filter

Mohan¹

2013

IJCA

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In this paper, a current-mode all-pass filter employing single multi-output dual-X second-generation current conveyor, a grounded resistor and a grounded capacitor is proposed. The circuit is as good as ideal for current-mode cascading by possessing low input and high output impedances. The use of grounded passive components makes the circuit, ideal for IC implementation. The effect of non-idealities and parasitics associated with the real MO-DXCCII implementation is also considered. The theoretical results are validated through PSPICE simulation program using 0.35µm CMOS process parameters.

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Current-mode all-pass filters using current differencing buffered amplifier and a new high-Q bandpass filter configuration

Cited by 164 publications

References 19 publications

Design of the simple oscillator with linear tuning and pi/4 phase shift based on emulator of the modified current differencing unit

Design of the simple oscillator with linear tuning and pi/4 phase shift based on emulator of the modified current differencing unit

CDDITA-Based Voltage-Mode First Order All Pass Filter Configuration

Single Active Element based Current-Mode All-Pass Filter

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