Electronically tunable low-component-count current-mode biquadratic filter using dual-output current followers

Tangsrirat, Worapong; Prasertsom, Danucha

doi:10.1007/s00202-006-0051-1

Cited by 14 publications

(9 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A second example is provided herein by analyzing a universal biquadratic filter using only dual-output CMs and grounded capacitors, it is taken from [33]. Its nullorequivalent is shown in Fig.…”

Section: Symbolic Analysis Of Analog Circuits Containing Vms Cms Andmentioning

confidence: 99%

“…However, when the output-resistances equal to ?, the reduced symbolic expression is given by (6). As one sees, only the input resistances R ina and R inc are included in the reduced symbolic expression, as already shown in [33]. When the gains are set to unity, (6) becomes (7).…”

Section: Symbolic Analysis Of Analog Circuits Containing Vms Cms Andmentioning

confidence: 99%

“…Among them, the CM could be the most useful cell covering a wide range of applications [9,13,31,33,43 ], and also it can provide multiple-outputs (MO-CM). The four UGCs can be combined to model the behavior of already known and new active devices [3].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Symbolic analysis of analog circuits containing voltage mirrors and current mirrors

Tlelo‐Cuautle

Sánchez–López

Martinez-Romero

et al. 2010

Analog Integr Circ Sig Process

View full text Add to dashboard Cite

The pathological elements voltage mirror (VM) and current mirror (CM) have shown advantages in analog behavioral modeling and circuit synthesis, where many nullor-mirror equivalences have been explored to design and to transform voltage-mode circuits to current-mode ones and viceversa. However, both the VM and CM have not equivalents to perform automatic symbolic circuit analysis. In this manner, we introduce nullor-equivalents for these pathological elements allowing to include parasitics and to perform only symbolic nodal analysis. The nullor-equivalent of the CM is extended to provide multiple-outpus (MO-CM). Finally, two active filters containing VMs, CMs and MO-CMs are analysed to show the usefulness of the models.

show abstract

Section: Symbolic Analysis Of Analog Circuits Containing Vms Cms Andmentioning

confidence: 99%

Section: Symbolic Analysis Of Analog Circuits Containing Vms Cms Andmentioning

confidence: 99%

See 1 more Smart Citation

Symbolic analysis of analog circuits containing voltage mirrors and current mirrors

Tlelo‐Cuautle

Sánchez–López

Martinez-Romero

et al. 2010

Analog Integr Circ Sig Process

View full text Add to dashboard Cite

show abstract

“…Many different types of active elements are used in filtering circuitries, starting from the simple current followers (CF) [2,3], through dual-or multiple-output current followers (DO-CF, MO-CF) [4,5], OTA amplifiers, mostly in the form of the OTA-C filter [6,7], current conveyors (CC) of different generations [8,9] up to more complex active elements such as the Current Differencing Transconductance Amplifier (CDTA) [10][11][12], which consists of a differential current follower and a transconductance amplifier, and also the Current Follower Transconductance Amplifier (CFTA) [13,14], which contains a simple current follower and also a transconductance amplifier.…”

Section: Introductionmentioning

confidence: 99%

Tunable Universal Filter with Current Follower and Transconductance Amplifiers and Study of Parasitic Influences

Jeřábek¹,

Šotner²,

Vrba³

2011

Journal of Electrical Engineering

View full text Add to dashboard Cite

A universal filter with dual-output current follower (DO-CF), two transconductance amplifiers (OTAs) and two passive elements is presented in this paper. The filter is tunable, of the single-input multiple-output (SIMO) type, and operates in the current mode. Our solution utilizes a low-impedance input node and high-impedance outputs. All types of the active elements used can be realized using our UCC-N1B 0520 integrated circuit and therefore the paper contains not only simulation results that were obtained with the help of behavioral model of the UCC-N1B 0520 element, but also the characteristics that were gained by measurement with the mentioned circuit. The presented simulation and measurement results prove the quality of designed filter. Similar multi-loop structures are very-well known, but there are some drawbacks that are not discussed in similar papers. This paper also contains detailed study of parasitic influences on the filter performance.

show abstract

“…For instance, among the plethora of active devices, the current conveyor (CC) is a universal one [3,4], whose derivations are known as first generation CC (CCI) [5][6][7], second generation CC (CCII) [8][9][10][11][12][13], and third generation CC (CCIII) [14,15]. These three kinds of CCs have been designed to provide tunable characteristics [16,17], and also they have their inverting topologies [18,19]. In particular, the positive-type CCII (CCII+) can be evolved to design the current feedback opamp (CFOA) [20].…”

Section: Introductionmentioning

confidence: 99%

Symbolic analysis of (MO)(I)CCI(II)(III)‐based analog circuits

Tlelo‐Cuautle

Sánchez–López

Moro-Frías

2010

Circuit Theory & Apps

View full text Add to dashboard Cite

SUMMARYNew nullor-based models are introduced to describe the behavior of the first generation current conveyor (CCI), second generation current conveyor (CCII), third generation current conveyor (CCIII), their inverting equivalents (ICCI(II)(III)), and/or their multiple output topologies (MO(I)CCI(II)(III)). These nullor equivalents include only grounded resistors to improve the formulation of equations in symbolic nodal analysis. In this manner, it is highlighted the usefulness of the proposed models to calculate analytical expressions in MO(I)CCI(II)(III)-based analog circuits.

show abstract

Electronically tunable low-component-count current-mode biquadratic filter using dual-output current followers

Cited by 14 publications

References 12 publications

Symbolic analysis of analog circuits containing voltage mirrors and current mirrors

Symbolic analysis of analog circuits containing voltage mirrors and current mirrors

Tunable Universal Filter with Current Follower and Transconductance Amplifiers and Study of Parasitic Influences

Symbolic analysis of (MO)(I)CCI(II)(III)‐based analog circuits

Contact Info

Product

Resources

About