A new ICCII based resistor-less current-mode first-order universal filter with electronic tuning capability

Safari, Leila; Yüce, Erkan; Mınaeı, Shahram

doi:10.1016/j.mejo.2017.07.015

Cited by 43 publications

(29 citation statements)

References 32 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%

“…Nowadays, researchers have also shown massive interest in the designing of universal filter structures. In existing first‐order filter designs (Abaci & Yuce, ; Arslanalp, 2011; Ayten et al, ; Beg et al, ; Chaturvedi & Kumar, ; Chaturvedi & Kumar, ; Chaturvedi & Mohan, ; Chaturvedi et al, ; Chaturvedi et al, ; Horng, ; Kumar & Chaturvedi, ; Kumar & Paul, ; Maheshwari, ; Maheshwari, ; Maheshwari, ; Maheshwari, ; Maheshwari & Khan, ; Maheshwari & Khan, ; Maheshwari et al, ; Mohan, ; Mohan et al, ; Safari et al, ; Yuce & Minaei, ; Yuce et al, ), 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, ; Arslanalp, 2011; Beg et al, ; Chaturvedi & Kumar, ; Chaturvedi et al, ; Chaturvedi et al, ; Horng, ; Kumar & Paul, ; Maheshwari, ; Maheshwari & Khan, ; Maheshwari et al, ; Safari et al, ; Yuce & Minaei, ; Yuce et al, ) present diverse first‐order universal filter structures and aim to achieve some good signal processing attributes as follows: Single ABB based realization Use of minimum number of resistors Use of minimum number of capacitors Use of grounded passive components Cascadability support Higher operating frequency Lower supply voltages Lesser power dissipation. …”

Section: Introductionmentioning

confidence: 99%

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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%

Section: Introductionmentioning

confidence: 99%

Resistorless Realization of First‐Order Current Mode Universal Filter

et al. 2020

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“…Device-based CM circuits are being continuously used to synthesis different analog signal processing functions. Current conveyors of 1 st , 2 nd , and 3 rd generations (CCI, CCII, CCIII), 2 nd generation current controlled current conveyors (CCCII), transconductance amplifiers (OTA), and the four terminal floating nullor (FTFN) are examples of popular analog blocks that are being widely used in implementing CM filters [4,5,8,12,13]. However, high order analog filters based on such active elements usually suffers from relatively lower frequency range, limited ability to be tuned and limited performance.…”

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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“…This is due to the fact that these filters do not require any inductor or coupling elements, resulting in more integration ability and smaller chip size. Moreover, these filters provide better electrical characteristics such as electronic tunability in comparison with the filters in passive approaches, at the cost of high sensitivity values, additional noise sources, and power consumption due to the presence of active elements in the circuit . Therefore, designing of a mixed‐mode universal filter, which generates all the filtering responses (low‐pass, high‐pass, band‐pass, all‐pass, and band‐stop) with the ability of operating in both voltage and current modes is a complex task …”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11][12][13] Therefore, designing of a mixed-mode universal filter, which generates all the filtering responses (low-pass, high-pass, band-pass, all-pass, and band-stop) with the ability of operating in both voltage and current modes is a complex task. [1][2][3][4][5][6][7][8][9][10][11][12][13] Due to the increasing demands for miniaturization of portable devices as well as minimizing the power consumption in different battery powered applications, designing of subthreshold circuits in low-voltage (LV) and low-power (LP) conditions is a challenging task, which should be considered in modern electronic systems. 5,[14][15][16] Therefore, the subthreshold technique is inevitable in low-voltage/lowpower applications, especially when the supply voltage is reduced to values of less than the threshold voltage.…”

Section: Introductionmentioning

confidence: 99%

A CNTFET universal mixed‐mode biquad active filter in subthreshold region

Zanjani

Dousti

Dolatshahi

2018

Int J RF Microw Comput Aided Eng

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This paper presents a new low‐voltage and low‐power mixed‐mode universal active filter, using only 12 carbon nanotube field effect transistors (CNTFETs) and 2 grounded capacitors to improve the noise performance of the proposed circuit. Due to the use of subthreshold transistors biased at ±0.2 V supply voltage, the power consumption of the proposed multi input‐single output (MISO) filter is only 850 nW at 19 MHz center frequency. On the other hand, relaxing from any matching components, the center frequency and quality factor of the proposed filter can be tuned electronically with low sensitivity to the values of the active and passive elements. Furthermore, the active chip area of the proposed filter is significantly reduced to 0.047 μm2, in 32 nm CNTFET technology. Therefore, as the HSPICE simulation results show, the input referred noise values at 19 MHz are reduced to 15.5 nV/Hz and 185 fA/Hz in voltage and current modes, respectively. It is also shown that, by changing the number of nanotubes in the CNTFET structure, a very good power‐frequency trade‐off can be achieved for low‐power GHz applications.

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A new ICCII based resistor-less current-mode first-order universal filter with electronic tuning capability

Cited by 43 publications

References 32 publications

Resistorless Realization of First‐Order Current Mode Universal Filter

Resistorless Realization of First‐Order Current Mode Universal Filter

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

A CNTFET universal mixed‐mode biquad active filter in subthreshold region

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