Fully Controllable First Order Current Mode Universal Filter Composed of BJTs and a Grounded Capacitor

Arslanalp, Remzi; Tola, Abdullah T.; Yüce, Erkan

doi:10.5755/j01.eee.112.6.448

Cited by 13 publications

(9 citation statements)

References 10 publications

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“…Nowadays, researchers have also shown massive interest in the designing of universal filter structures. In existing first-order filter designs (Abaci & Yuce, 2018;Arslanalp, 2011;Ayten et al, 2014;Beg et al, 2011;Chaturvedi & Kumar, 2018b;Chaturvedi & Mohan, 2015a;Chaturvedi et al, 2020;Horng, 2010;Kumar & Chaturvedi, 2016;Kumar & Paul, 2017;Maheshwari, 2007a;Maheshwari, 2007b;Maheshwari, 2008;Maheshwari, 2018;Maheshwari & Khan, 2001;Maheshwari & Khan, 2003;Maheshwari et al, 2006;Mohan, 2013;Mohan et al, 2013;Safari et al, 2017;Yuce & Minaei, 2016;Yuce et al, 2013), a universal filter circuit is one which generates low-pass, high-pass, and all-pass responses within a single circuit. Contemporary research works (Abaci & Yuce, 2018;Arslanalp, 2011;Beg et al, 2011;Chaturvedi et al, 2020;Horng, 2010;Kumar & Paul, 2017;Maheshwari, 2008;Maheshwari & Khan, 2001;Maheshwari et al, 2006;Safari et al, 2017;Yuce & Minaei, 2016;Yuce et al, 2013) present diverse first-order universal filter structures and aim to achieve some good signal processing attributes as follows:…”

Section: Introductionmentioning

confidence: 99%

Resistorless Realization of First‐Order Current Mode Universal Filter

et al. 2020

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This paper proposes a first-order current mode universal filter employing single active building block, namely differential difference dual-X second generation current conveyor. The proposed filter is designed to provide multiple filter responses simultaneously, namely low-pass, high-pass, and all-pass on applying a current signal at its input terminal. The proposed work also enjoys the presence of metal oxide semiconductor transistors working as tunable resistors. Some of the key features of the proposed filter are as follows: use of single passive element (a grounded capacitor), ease of cascadability as all the outputs are available at highimpedance ports, low active and passive sensitivities, significantly high frequency of operation (3 MHz), low total harmonic distortion of output current (1.28%), low output current noise (10 pA/√Hz), and low power dissipation (2 mW). A detailed study of device nonidealities is also presented to show the satisfactory performance of the proposed structure under all practical considerations. PSPICE simulations effectively demonstrate the good performance of the proposed filter.

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Section: Introductionmentioning

confidence: 99%

Resistorless Realization of First‐Order Current Mode Universal Filter

et al. 2020

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“…Literature survey shows that first‐order AP filters using second‐generation current conveyors (CCIIs) [1–9], current followers (CFs) [10], inverting CCIIs (ICCIIs) [11], differential voltage current conveyors (DVCCs) [12–14], dual‐X CCIIs (DX‐CCIIs) [15–20], extra‐X current controlled conveyors (EX‐CCCIIs) [21, 22], third‐generation current conveyors (CCIIIs) [23], dual‐X current conveyor transconductance amplifiers (DXCCTAs) [24, 25], current operational amplifiers (COAs) [26], MOS transistors [27], bipolar junction transistors (BJTs) [28, 29], operational transresistance amplifiers (OTRAs) [30], current differencing transconductance amplifiers (CDTAs) [31], voltage gain‐controlled modified current feedback operational amplifiers (VGC‐MCFOAs) [32] and so on have been reported so far.…”

Section: Introductionmentioning

confidence: 99%

New mixed‐mode second‐generation voltage conveyor based first‐order all‐pass filter

Yüce

Safari

Mınaeı

et al. 2020

IET Circuits, Devices & Systems

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“…On the other hand, log-domain circuits and since they were invented received considerable attention as a powerful technique of realizing analog signal processing functions using bipolar junction transistors (BJT's) [15]. This is mainly due to the additional merits log-domain circuits considered to have including lower sensitivity to temperature variations, larger bandwidth, higher density and ease of tuning [16].…”

Section: Introductionmentioning

confidence: 99%

Log-domain electronically-tuneable fully differential high order multi-function filter

Fares¹

2020

IJECE

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This paper presents the synthesis of fully deferential circuit that is capable of performing simultaneous high-pass, low-pass, and band-pass filtering in the log domain. The circuit utilizes modified Seevinck’s integrators in the current mode. The transfer function describing the filter is first presented in the form of a canonical signal flow graph through applying Mason’s gain formula. The resulting signal flow graph consists of summing points and pick-off points associated with current mode integrators within unity-gain negative feedback loops. The summing points and the pick-off points are then synthesized as simple nodes and current mirrors, respectively. A new fully differential current-mode integrator circuit is proposed to realize the integration operation. The proposed integrator uses grounded capacitors with no resistors and can be adjusted to work as either lossless or lossy integrator via tuneable current sources. The gain and the cutoff frequency of the integrator are adjustable via biasing currents. Detailed design and simulation results of an example of a 5th order filter circuit is presented. The proposed circuit can perform simultaneously 5th order low-pass filtering, 5th order high-pass filtering, and 4th order band-pass filtering. The simulation is performed using Pspice with practical Infineon BFP649 BJT model. Simulation results show good matching with the target.

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Fully Controllable First Order Current Mode Universal Filter Composed of BJTs and a Grounded Capacitor

Cited by 13 publications

References 10 publications

Resistorless Realization of First‐Order Current Mode Universal Filter

Resistorless Realization of First‐Order Current Mode Universal Filter

New mixed‐mode second‐generation voltage conveyor based first‐order all‐pass filter

Log-domain electronically-tuneable fully differential high order multi-function filter

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