CMOS implementations of VDTA based frequency agile filters for encrypted communications

Alaybeyoglu, Ersin; Kuntman, Hakan

doi:10.1007/s10470-016-0760-y

Cited by 33 publications

(13 citation statements)

References 11 publications

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“…Finally, Table 2 provides a comparison of the proposed filters with previously published shadow filters in [ 22 , 23 , 26 , 29 , 30 ]. The proposed filters provide lower power consumption, as compared with [ 22 , 23 ], lower output impedance, as compared with [ 26 , 30 ] (except the output impedance of the LP filter in Figure 3 b), larger number of low-impedance nodes, as compared with [ 29 ], and lower supply voltage, as compared with [ 23 , 26 , 29 , 30 ].…”

Section: Simulation Resultsmentioning

confidence: 99%

“…There are many shadow filters (also known as frequency-agile filters) realized using variant active elements available in the literature [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. In [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ], current-mode (CM) shadow filters have been reported whereas in [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ] voltage-mode (VM) shadow filters have been introduced. This paper is focused on the VM filters which offer high-input and low-output impedances, electronic tuning ability, and use grounded passive components.…”

Section: Introductionmentioning

confidence: 99%

“…However, the circuits in [ 19 , 20 , 21 , 22 ] don’t provide an electronic tuning ability of the natural frequency and the quality factor. The shadow filters employing voltage differencing transconductance amplifier (VDTA) [ 23 , 24 , 25 , 26 , 27 ], voltage differencing gain amplifier (VDGA) [ 28 ], voltage differencing differential difference amplifier (VDDDA) [ 29 ], and operational transconductance amplifier (OTA) [ 30 ] offer an electronic tuning ability and high-input impedance, which is advantageous for VM circuits. However, these active filters were supplied with relatively high voltages, namely, ±0.9 V in [ 23 , 29 ], ±1 V in [ 24 , 25 , 27 ], ±1.5 V in [ 26 ], and ±1.8 V in [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

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Shadow Filters Using Multiple-Input Differential Difference Transconductance Amplifiers

Kumngern

Khateb

Kulej

2023

Sensors

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This paper presents new voltage-mode shadow filters employing a low-power multiple-input differential difference transconductance amplifier (MI-DDTA). This device provides multiple-input voltage-mode arithmetic operation capability, electronic tuning ability, high-input and low-output impedances. Therefore, the proposed shadow filters offer circuit simplicity, minimum number of active and passive elements, electronic control of the natural frequency and the quality factor, and high-input and low-output impedances. The proposed MI-DDTA can work with supply voltage of ±0.5 V and consumes 9.94 μW of power. The MI-DDTA and shadow filters have been designed and simulated with the SPICE program using 0.18 μm CMOS process parameters to validate the functionality and workability of the new circuits.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Shadow Filters Using Multiple-Input Differential Difference Transconductance Amplifiers

Kumngern

Khateb

Kulej

2023

Sensors

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“…2. The implementation of temperature independent current generator is designed based on (Alaybeyoğlu and Kuntman 2016). Layout of the comparator is given in Fig.…”

Section: Comparator Designmentioning

confidence: 99%

Low-Power Dynamic Comparator With High Precision for Sar Adc

Alaybeyoglu

2020

Turkish Journal of Engineering

Self Cite

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In this work, low-power dynamic comparator is presented with auto-zeroing technique for successive approximation register (SAR) analogue-to-digital converter (ADC). The comparator designed with DTMOS technique operates in subthreshold region. The designed circuit consumes low power with high gain. The dynamic range of the comparator is increased with a new biasing technique for DTMOS transistors. The core design consumes 6.01µW power and overall design consumes 17.06µW. The design is realized with two different supply voltage with 600mV (core design) and 1.8V (biasing circuit). The comparator has been simulated with 0.18µm TSMC process in Cadence environment.

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“…In view of carrying such specific properties, the VDTA has been treated as the most favored element in use for various applications. Some of the applications include filters, oscillators, simulation of inductors and capacitors which use one VDTA block taking the help of capacitors [22][23][24][25][26][27][28][29][30][31][32][33]. Some of the current mode devices are furnished below.…”

Section: Historical Background Of Carbon Nano Tube Field Effect Transmentioning

confidence: 99%

A Novel Simple Differentiator Circuit Based on Carbon Nano Tube Field Effect Transistors Voltage Difference Transconductance Amplifier

Bhargav

Saini

2019

MNS

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: This paper brings in a new design, namely, voltage mode differentiator with an active element, Carbon Nanotube Field Effect Transistors Voltage Difference Transconductance Amplifier (CNVDTA). The circuit thus proposed needs one Carbon Nanotube Field Effect Transistors Voltage Difference Transconductance Amplifier (CNVDTA) element and a single capacitor. While fabricating IC’s in VLSI design, the proposed circuit proves more adaptable and applicable with the anticipated results. Methods: The proposed CNVDTA based voltage mode differentiator in CNFET technology was simulated at 32 nm at a voltage supply of ±0.9 V using the Cadence Virtuoso CAD tool. Results: It is also reported that the proposed circuit would function with ±0.9 V supply voltage and would also take care of the bias current of the order of 150 µA. Further, on the part of the transconductance (gm), it is electronically tunable with the help of bias current. Conclusion: The CNVDTA based differentiator has been found to be very useful in the triggering circuit of CRO’s, wave shaping circuits, power control circuits etc. It is also found useful in detecting the high-frequency components in the input signals.

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CMOS implementations of VDTA based frequency agile filters for encrypted communications

Cited by 33 publications

References 11 publications

Shadow Filters Using Multiple-Input Differential Difference Transconductance Amplifiers

Shadow Filters Using Multiple-Input Differential Difference Transconductance Amplifiers

Low-Power Dynamic Comparator With High Precision for Sar Adc

A Novel Simple Differentiator Circuit Based on Carbon Nano Tube Field Effect Transistors Voltage Difference Transconductance Amplifier

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