Current-mode KHN filter employing current differencing transconductance amplifiers

Keskïn, Ali; Biolek, Dalibor; Hancioglu, Erhan; Biolková, Viera

doi:10.1016/j.aeue.2005.09.003

Cited by 154 publications

(78 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [1], the review of basic, modified, and novel active elements is also given. In the last years in the literature interesting applications of components mentioned in [1], such as operational transconductance amplifier (OTA) [2,3], current controlled second-generation current conveyor (CCCII) [4,5], dual-X second-generation current conveyor (DXCCII) [6,7], fully-differential secondgeneration current conveyer (FDCCII) [8,9], current feedback amplifier (CFA) [10], current controlled CFA (CC-CFA) [11], modified current feedback operational amplifier (MCFOA) [12], current differencing buffered amplifier (CDBA) [13,14], current differencing transconductance amplifier (CDTA) [15,16], current follower transconductance amplifier (CFTA) [17,18], programmable current amplifiers [19,20], adjustable current followers [21], etc, have been published. Many of these components offer features for electronic control and great frequency response.…”

Section: Introductionmentioning

confidence: 99%

New Double Current Controlled CFA (DCC–CFA) Based Voltage–Mode Oscillator with Independent Electronic Control of Oscillation Condition and Frequency

Šotner¹,

Herencsár²,

Jeřábek³

et al. 2013

Journal of Electrical Engineering

View full text Add to dashboard Cite

In this paper, a new electronically tunable quadrature oscillator (ETQO) based on two modified versions of current feedback amplifiers (CFAs), the so called double current controlled CFA (DCC-CFAs) is presented. The frequency of oscillation (FO) of the proposed voltage-mode (VM) ETQO is electronically adjustable by current gain or by varying the intrinsic resistance of the X terminal of the active element used. The condition of oscillation (CO) is adjustable by current gain independently with respect to frequency of oscillation. Simultaneous control of current gain and intrinsic resistance allows linear control of FO and provides extension of frequency tuning range. In the proposed circuit all the capacitors are grounded. The use of only grounded capacitors makes the proposed circuit ideal for integrated circuit implementation. The presented active element realized by using BiCMOS technology and the behavior of proposed circuit are discussed in details. The theoretical results are verified by SPICE simulations based on CMOS ON-Semi C5 0.5 µ m and bipolar ultra high frequency transistor arrays Intersil HFA 3096 process parameters.

show abstract

Section: Introductionmentioning

confidence: 99%

New Double Current Controlled CFA (DCC–CFA) Based Voltage–Mode Oscillator with Independent Electronic Control of Oscillation Condition and Frequency

Šotner¹,

Herencsár²,

Jeřábek³

et al. 2013

Journal of Electrical Engineering

View full text Add to dashboard Cite

show abstract

“…A universal filter and a current-mode Kerwin-Huelsman-Newcomb filter were proposed in [10] and [11], respectively. Both of the filters consisted of 2 CDTAs and 2 capacitors and their structures were very simple; the filter in [10] was especially easy to cascade for high-order filters.…”

Section: Introductionmentioning

confidence: 99%

“…Both of the filters consisted of 2 CDTAs and 2 capacitors and their structures were very simple; the filter in [10] was especially easy to cascade for high-order filters. However, the 2 filters could only realize low-pass (LP), band-pass (BP), and high-pass (HP) filter functions, and the HP in [10] and BP and HP in [11] were not at high-impedance output nodes, which need z-copy terminals to copy the currents to high-impedance terminals. The multifunction filter in [12] used too many active elements (more than 2 CDTAs).…”

Section: Introductionmentioning

confidence: 99%

Current-mode universal filter and quadrature oscillator using CDTAs

Wang¹

2014

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

“…Some active elements which have two externally controllable (by bias voltage or current) parameters have been already published. Typical examples of active elements with two-parameter control are modifications of the current differencing transconductance amplifier (CDTA) [2], where R X and g m control is implemented by DC bias currents [3,4]. Several active elements, based on transconductance section (OTA) [1,5] and current conveyor of second generation (CCII) [6,7], have been also proposed.…”

Section: Introductionmentioning

confidence: 99%

Tiso Adjustable Filter with Controllable Controlled–Gain Voltage Differencing Current Conveyor

Jeřábek¹,

Šotner

Vrba³

2014

Journal of Electrical Engineering

View full text Add to dashboard Cite

The main aim of this paper is to present solution of triple-input single-output (TISO) filter with independently adjustable pole frequency, quality factor, bandwidth and also gain. Filter is universal, operates in current mode and includes only one active element -the so-called Controlled-Gain Voltage Differencing Current Conveyor (CG-VDCC) with two controllable parameters: transconductance ( gm ) and gain of output currents ( B X ). Implementation of CG-VDCC element in 0.18 µm CMOS technology is also included and this model is used in proposed filter simulations.K e y w o r d s: current mode, SITO filter, universal filter, CG-VDCC

show abstract

Current-mode KHN filter employing current differencing transconductance amplifiers

Cited by 154 publications

References 9 publications

New Double Current Controlled CFA (DCC–CFA) Based Voltage–Mode Oscillator with Independent Electronic Control of Oscillation Condition and Frequency

New Double Current Controlled CFA (DCC–CFA) Based Voltage–Mode Oscillator with Independent Electronic Control of Oscillation Condition and Frequency

Current-mode universal filter and quadrature oscillator using CDTAs

Tiso Adjustable Filter with Controllable Controlled–Gain Voltage Differencing Current Conveyor

Contact Info

Product

Resources

About