Cascadable Current‐Mode First‐Order All‐Pass Filter Based on Minimal Components

Mohan, Jitendra; Maheshwari, Sudhanshu

doi:10.1155/2013/859784

Cited by 21 publications

(7 citation statements)

References 19 publications

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“…Nonidealities of the active element along with parasitics are also considered, so as to evaluate the proposed filter. The filter reported in [ 23 , 24 ] is a current mode all-pass filter while the filter presented in this work is a voltage mode all-pass filter.…”

Section: Discussionmentioning

confidence: 99%

Tunable First-Order Resistorless All-Pass Filter with Low Output Impedance

Beg

2014

The Scientific World Journal

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This paper presents a voltage mode cascadable single active element tunable first-order all-pass filter with a single passive component. The active element used to realise the filter is a new building block termed as differential difference dual-X current conveyor with a buffered output (DD-DXCCII). The filter is thus realized with the help of a DD-DXCCII, a capacitor, and a MOS transistor. By exploiting the low output impedance, a higher order filter is also realized. Nonideal and parasitic study is also carried out on the realised filters. The proposed DD-DXCCII filters are simulated using TSMC the 0.25 µm technology.

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Section: Discussionmentioning

confidence: 99%

Tunable First-Order Resistorless All-Pass Filter with Low Output Impedance

Beg

2014

The Scientific World Journal

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“…Some published CM all-pass circuits with at least 19 transistors and capacitances are observed in [12]- [20]. Also, [12], [16], [17], [22] contain passive resistances. All-pass filters are proposed in [21] which employ 10 transistors and a capacitor.…”

Section: Introductionmentioning

confidence: 99%

Novel First Order Current Mode MOS-C Phase Shifters

Ozenli¹,

Yeşil²,

Arslan³

et al. 2018

ElAEE

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In this work, novel first order MOS-C phase shifter structures are proposed in NMOS and PMOS configurations. Core circuits consist of only three transistors and a single capacitor. The pole frequency of the phase shifters can be easily controlled by the bias voltage. The presented circuits in this work bring advantages such as low power consumption and small chip area when compared to other works including large numbers of active and passive elements in the literature. Furthermore, the proposed circuits are designed with a simple design automation flow that is proper for MOS-Only or MOS-C architectures. It is shown by simulations that the simulation results agree with the theoretical results for a wide frequency range.

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“…5 two NMOS transistors, both operating in saturation region, forming inverting voltage buffer is used. Second-generation current conveyor (CCII) [6][7][8][9][10][11][12] , second-generation currentcontrolled conveyor (CCCII) [13][14][15][16][17][18][19][20] , dual-X second-generation multi-output current conveyor (DX-MOCCII) 21,22 , third-generation current conveyor (CCIII) 23,24 , gain-variable third-generation current conveyor (GVCCIII) 25 , and differential voltage current conveyor (DVCC) 26,27 were also very popular and useful ABBs for first-order APF design in the past. Later on, a four terminal floating nullor (FTFN) and voltage gain-controlled modified current feedback amplifier (VGC-MCFOA)-based CM APFs were introduced in the literature 28,29 .…”

Section: Introductionmentioning

confidence: 99%

“…In addition to the given study above our investigation also shows that the proposed circuits in Refs. 2-46 suffer from some additional weaknesses:  use of BJTs in its internal structure 2,[13][14][15][16][17]19,29,30,[36][37][38]40,[43][44][45] , which is not preferred due to effect of thermal voltage,  use of multiple current output terminal ABB (device with three or more outputs) 4,12,19,21,22,37,38,40,43 , which increases the number of transistors in structure,  employs excessive number of passive components (three or more) [5][6][7][8][24][25][26][27][28][29]31,34,35,45 ,  two or more capacitors are required 5,26 ,  capacitor is connected in series to low input-impedance terminal of ABB 7,12,15,17,26,[32...…”

Section: Introductionmentioning

confidence: 99%

Resistorless Current-Mode First-Order All-Pass Filter with Electronic Tuning Employing Low-Voltage CBTA and Grounded Capacitor

Herencsár

Koton

Lahiri³

et al. 2017

J CIRCUIT SYST COMP

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In this paper, a new realization of a current-mode first-order all-pass filter (APF) using a single active building block (ABB) and one grounded capacitor is presented. As the ABB, the current backward transconductance amplifier (CBTA) is used, which is one of the most recently reported active elements in the literature. The theoretical results are in detail verified by numerous SPICE simulations using a new low-voltage implementation of CBTA. In the design, the PTM 90[Formula: see text]nm level-7 CMOS process BSIM3v3 parameters with [Formula: see text]0.45[Formula: see text]V supply voltages were used. The proposed resistorless CBTA-C APF provides easy electronic tuning of the pole frequency in the frequency range from 763[Formula: see text]kHz to 17.6[Formula: see text]MHz, which is more than one decade. Maximum power dissipation of the circuit is 828[Formula: see text][Formula: see text]W at bias current 233[Formula: see text][Formula: see text]A. Nonideal, parasitic effects, sensitivity analyses, temperature and noise variation, current swing capability, and Monte Carlo analysis results are also provided. Compared to prior state-of-the-art works, the proposed CBTA-C APF has achieved the highest figure of Merit value, which proves its superior performance.

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Cascadable Current‐Mode First‐Order All‐Pass Filter Based on Minimal Components

Cited by 21 publications

References 19 publications

Tunable First-Order Resistorless All-Pass Filter with Low Output Impedance

Tunable First-Order Resistorless All-Pass Filter with Low Output Impedance

Novel First Order Current Mode MOS-C Phase Shifters

Resistorless Current-Mode First-Order All-Pass Filter with Electronic Tuning Employing Low-Voltage CBTA and Grounded Capacitor

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