Roy Paily

Indian Institute of Technology Guwahati | IIT Guwahati · Department of Electronics and Electrical Engineering (EEE)

The demand for hydrogen is on a continuous rise in view of its application as a clean-burning and alternate carbon-free energy source. It is flammable at concentration above 4 % in air and is odorless. Fabrication of highly sensitive and selective hydrogen sensors based on small organic molecules which operate at room temperature is challenging. Th...

We designed and synthesized four naphthalene and perylene bisimide-based imidazole-containing liquid-crystalline (NI and PI) derivatives based on a donor−π–acceptor−π–donor (D2–π2–A) architecture. These compounds bear 10 flexible peripheral chains to ensure liquid crystallinity and solution processability making them suitable to use as organic semi...

This work reports the synthesis of copper oxide (CuO) nanowires (NWs) using thermal oxidation followed by microcantilever contact print (μCCP) of silver nanoparticles (AgNP) on Si-SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> substrate to get field-effect transistors (FETs) in back, copla...

This work reports the copper oxide (CuO) single nanowire (SNW) based devices for the detection of volatile organic compounds (VOCs). Fabrication involves the synthesis of CuO nanowires by thermal oxidation of copper. The SNW back-to-back Schottky diode electrodes are fabricated by microcantilever contact print ( $\mu$ CCP) of silver nanoparticles...

This work illustrates a high-performance Urea sensor using Cys-GO (L-Cysteine functionalized GO) as a sensing material. The device is fabricated using the standard lithography process. The device has an additional feature of liquid holding, which increases sensing performance. The morphological and structural characterization of Cys-GO is investiga...

This study demonstrates the application of graphene oxide-silver (GO/Ag) nanocomposite to develop a non-enzymatic high-performance glucose-sensing field-effect transistor (FET). Lithography and etching processes are used to fabricate the SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> trenc...

This work describes the fabrication of a Carbon monoxide (CO) sensor based on a Zinc oxide (ZnO) Schottky diode that can detect CO at low concentrations as low as one part per million (ppm) at room temperature. Different additive microfabrication techniques are used to fabricate the devices. A precisely controlled fabrication is enabled by employin...

Binary division operation has immense importance in the field of engineering science. Inherently, division operation is a sequential operation, making it more expensive in terms of computational complexity and latency compared with other mathematical operations like multiplication and addition. This work proposes a novel iterative binary division m...

This work presents a robust and low leakage new 8T static random access memory (SRAM) cell without any half‐selection disturbance. The proposed cell removes write disturbance by eliminating the trail from supply and ground. Furthermore, it removes the read disturbance by separating the read trail from the storage node. The proposed cell addresses t...

The ever-growing exploration of negative capacitance field effect transistors (NCFETs) for low-power digital application and recent integration in the advanced technology node calls for an investigation of NCFET technology in radio-frequency (RF) applications featuring metal ferroelectric insulator semiconductor (MFIS) configuration. In this articl...

This article describes the fabrication of Zinc Ferrite-Zinc oxide (ZFO-ZnO) heterostructure devices and the various sensing schemes that can be exploited using the same. A solvothermal approach has been used for the synthesis of ZFO-ZnO heterostructures having different compositions. The investigation of magnetic and electric properties is performe...

This work demonstrates the high-performance hydrogen peroxide (H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) sensing field-effect transistor (FET) using reduced graphene oxide - polypy...

This work explores the fabrication and characterization of an ionic liquid channel field effect transistor (FET) incorporated within the trench structure on SiO₂. The trench structure allows any liquid to be accommodated, thereby eliminating the mold creation on the device or the requirement for an intricate architecture to store liquid. For the fa...

Inorganic semiconductors have the potential features to enhance the stability and performance of printed electronic devices. In this work, we present a microcantilever ( $\mu \text{C}$ ) printed device by using zinc oxide (ZnO) and silver nanoparticles (AgNP) ink. Two types of devices have been fabricated on silicon wafers using two methods: (i) t...

This letter reports the fabrication of copper-oxide (CuO) single-nanowire (SNW) back-to-back Schottky diode for white light detection. The device fabrication includes the synthesis of nanowires by thermal oxidation of copper, followed by microcantilever contact print ( $\mu $ CCP) of silver nanoparticles (AgNP) electrodes. The metal-semiconductor-...

This work reports the fabrication of ZnO single-nanowire (SNW) Schottky diode based-sensors with micro-cantilever printed AgNP contact pads, for room temperature (RT) detection of air pollutants such as CO $_2$ and CO. ZnO SNWs with length in range of $\sim$ 1-5 $\mu$ m and diameter in the range of $\sim$ 90-250 nm have been placed on a sili...

The fabrication and testing of hierarchical architecture based Zinc Ferrite-Zinc oxide (ZnFe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> -ZnO) magnetic semiconductor (MS) sensor, for the...

This article reports fabrication and characterization of field effect transistor (FET) device consisting of zinc oxide (ZnO) nanoparticle–glutathione-S-transferase (GST) composite channel for successful in vitro detection and quantification of glutathione (GSH) in solution and in cancerous cell. The functionalized channel layer is synthesized by...

Design of high-performance processors with very low power requirement is the primary goal of many contemporary and futuristic applications. This brief presents a novel processor micro-architecture which is capable of achieving these requirements. The micro-architecture is based on RISC-V Instruction Set Architecture (ISA). The core is implemented a...

This work analyses the effect of pH variations on the morphological properties and dimensional modulation of ZnO nanowires (NWs) aqueous dispersions in de-ionized (DI) water. To observe the effect of lower pH values, different sets of ZnO nanowire dispersions (NWD) have been prepared and a certain amount of drop-casted dispersion has been added wit...

In the past years, several QRS complex (Q, R and S wave) detecting algorithms have been implemented in software, but they are not applicable for real-time operation due to their mathematical complexity. Hence, this paper focuses on developing an algorithm which enables detection of QRS complex in real time. Here, Integer Haar Wavelet Transform is e...

The study demonstrates the fabrication of magnetite (Fe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> ) microspheres (MS) based magneto resistor (MR), for the detection of as low as 10 par...

This article reports the fabrication of zinc-oxide (ZnO) single-nanowire (SNW)-based back-to-back Schottky diodes (BBSDs) using microcantilever-printed AgNP contact pads. ZnO SNWs have been placed on a SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /Si surface by dropcasting an optimized d...

This study aims for a new 11T static random access memory (SRAM) cell that uses power gating transistors and transmission gate for low leakage and reliable write operation. The proposed cell has a separate read and write path which successfully improves read and write abilities. Furthermore, it solves the row half select disturbance and utilises a...

Glutathione (GSH) recently emerges as an important biomarker for cancers and various disease detection as its concentration varies in the μM to mM range in biological cells and fluids. Despite extensive efforts devoted to optical detection and quantification of GSH, there still exits an intensive demand for the development of an electrochemical sen...

In this work, we report the usage of micro-cantilever printed silver nanoparticles (AgNP) contact pads for fabrication of ZnO nanowire (NW) Schottky diode-based sensors for detecting CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> , CO and NO <sub xmlns:mml="http://www.w3.org/1998/Math/MathM...

In this paper, we report the fabrication of printed micro-resistors (PMRs) of silver nanoparticles (AgNPs) based on micro-cantilever based printing technology (MCPT). The printed micro-resistors have been fabricated using three different printing techniques based on MCPT namely spot overwrite printing (SOP), dip-ink printing with spot overwrite pri...

In this study, we have studied the interaction of Phosgene ( ${\text {COCl}_{2}}$ ) on two configurations of Titanium doped Graphene Nanoribbons (GNR)- Armchair GNR and ZigZag GNR. We analyze the changes in the electronic structure of the substrate before and after the adsorption of Phosgene, with the help of Density Functional Theory (DFT) calcul...

Electromagnetic actuation systems are used to generate magnetic forces for manipulation of magnetic nanoparticles. In this paper, we present a comparative performance analysis of actuation systems, consisting of coils having the following five different topologies: single coil, Helmholtz coil, Maxwell coil, Helmholtz-Maxwell pair and differential c...

This work deploys the density functional theory to study the interactions between urea with pristine and transition metal (TM)-doped two-dimensional (2D) graphene structures. Four TM dopants, namely, V, Ti, Fe, and Cr, are considered in this study. Each of these doped structures has one TM atom replacing one carbon atom from 2D graphene sheets. Our...

Transition metal dichalcogenides (TMDs), such as MoS <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> , MoSe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> , MoTe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w...

Room temperature RF magnetron sputtering deposition of Zinc Oxide thin films on a glass substrate was carried out by varying deposition parameters such as sputtering pressure, target-to-substrate distance, and RF power. The as-deposited film at 75 W, sputtering pressure of 9.8 mbar and a target-to-substrate distance of 104 mm has showed a band gap...

Additive manufacturing (printing) of micron-scale patterns of metal and semiconductor particles is receiving significant attention due to its potential as an inexpensive alternative to top-down fabrication of silicon microelectronic devices. However, printing of such devices needs an in-depth understanding of physico-chemical interactions between t...

In this work, we present a computationally efficient approach for atomistic simulations of graphene nanoribbon (GNR), bilayer graphene (BLG) and bilayer graphene nanoribbon (BLGNR) field-effect transistors. The simulation scheme, which involves the self-consistent solutions of the non-equilibrium Green function method (NEGF) and 2-D Poisson’s equat...

In this study, we employed the density functional theory (DFT) to study the interactions between gaseous air pollutants, including di-atomic (CO and NO), tri-atomic (CO2 and HCN), and poly-atomic (HCHO and COCl2) species, and Ti-doped zigzag graphene nanoribbon (ZGNR) structures. During this, two types of doped structures are considered, i.e., SV-Z...

This paper presents the design and implementation of ultra-wideband (UWB) digital baseband transceiver for wireless body area networks (WBAN) applications. The power dissipation and area of the proposed architecture are minimized by combining algorithmic and architectural level modifications. A new algorithm for BCH encoding is implemented and the...

An efficient micro-scale solar power management architecture for self-powered Internet-of-Things node is presented in this paper. The proposed architecture avoids the linear regulator and presents a complete on-chip switched capacitor-based power converter in order to achieve higher end-to-end efficiency. Unlike traditional architectures, where the...

Extracting maximum power from a photovoltaic (PV) harvester with minimum power transfer loss is one of the primary design goals of an energy processing circuit. This paper presents a fully integrated PV power harvesting system with a low-overhead adaptive maximum power point tracking (MPPT) scheme for Internet-of-Things (IoT) nodes. The proposed sc...

The recent advancement in the fabrication of narrow graphene nanoribbon with smooth edges has catalyzed the growth of nanoribbon based transistors. Motivated by these advances, we suggest bilayer graphene nanoribbon tunnel fieldeffect transistors (BLGNR-TFETs) for low voltage digital and analog applications. The device performance is analyzed by qu...

A quantum transport simulator based on a self-consistent solution of the Schrödinger equation within non-equilibrium Green's function formalism and 2D Poisson equation for a bilayer graphene nanoribbon (bilayer GNR) field-effect transistor (FET) has been developed to examine the ballistic performance of a device. It is found that the lateral confin...

Wireless communication standards make use of parallel turbo decoder for higher data rate at the cost of large hardware resources. This paper presents a memory-reduced back-trace technique, which is based on a new method of estimating backward-recursion factors, for the maximum a posteriori probability (MAP) decoding. Mathematical reformulations of...

A fully integrated, low power low-noise amplifier (LNA) is implemented for 2.14 GHz band using 65-nm radio frequency CMOS technology. By taking advantage of higher transition frequencies of recent technologies, transistors are biased in the moderate inversion region thus permitting scaling down the supply voltage to 0.7 V. Further, the exploration...

This study presents a reconfigurable quasi-cyclic low density parity check (QC-LDPC) decoder for IEEE 802.16e worldwide interoperability for microwave access and IEEE 802.11n wireless fidelity communication standards. It supports multiple code-rates of 1/2, 2/3, 3/4, 5/6 and its architecture has been designed based on column layered decoding techni...

This paper presents hardware and bit-error-rate (BER) performance analysis of simplified maximum-a-posteriori (MAP) algorithms based on piece-wise-linear-approximations and Maclaurin-series-expansion for the turbo codes. From this comparative study, a simplified MAP algorithm with optimal BER performance is selected and an architecture suitable for...

In this paper, we investigate four different heater geometries viz. Meander, S-shape, Double-Meander and Double-Spiral for their inherent thermal uniformity. Microheater with optimum dimensions of insulation layer is employed to decrease the layer deposition time and to improve the thermal uniformity. Simulation studies are carried out to find the...

When conventional biasing topologies are employed, near sub-threshold operated amplifiers show large performance deviations under unavoidable PVT variations. Moreover, these effects become severe when these circuits are implemented in sub-nanometer technologies. This paper introduces a new type of compensation technique to realize a reliable low vo...

This paper proposes a un-grouped-sliding-window-technique (UGSWT) and a state metric normalization technique for logarithmic-maximum-a-posteriori-probability (LOG-MAP) algorithm. We have suggested a decoder architecture based on these techniques for high throughput application. Application-specific-integrated-circuit (ASIC) implementation of the pr...

The recent findings of quasi-saturation and negative differential resistance in graphene FET have motivated the researchers to improve the current saturation behavior. We suggest that tunnel FET (TFET) with graphene can be a potential candidate for better current saturation. In this regard, the electronic transport in zero bandgap graphene TFET (T-...

Junctionless transistors, which do not have any pn junction in the source-channel-drain path have become an attractive candidate in sub-20 nm regime. They have homogeneous and uniform doping in source-channel-drain region. Despite some similarities with conventional MOSFETs, the charge-potential relationship is quite different in a junctionless tra...

This paper investigates the effects of fringing field arising out of high-k (dielectric constant) gate insulator on the device performance of a p-channel double-gate junctionless transistor (p-DGJLT). The overall device performance of a p-DGJLT is degraded with such fringing field. This behavior is similar to its n-channel counterpart of similar di...

The impacts of high-k gate dielectric permittivity on the device and circuit performances of a double-gate junctionless transistor (DGJLT) are studied with the help of extensive device simulations. The results are compared with a conventional inversion mode double-gate metal oxide semiconductor field effect transistor (DG MOSFET) of same dimension....

This paper presents architecture of block-level-parallel layered decoder for irregular LDPC code. It can be reconfigured to support various block lengths and code rates of IEEE 802.11n (WiFi) wireless-communication standard. We have proposed efficient comparison techniques for both column and row layered schedule and rejection-based high-speed circ...

A pressure sensor based on the osmosis principle has been designed and demonstrated successfully for the sensing of the concentration levels of an osmotically active substance. The device is fabricated using the bulk micro-machining technique on a silicon on insulator (SOI) substrate. The substrate has a square cavity on the bottom side to fill wit...

Sensors sensitivity, selectivity and stability has always been a prime design concern for gas sensors designers. Modeling and simulation of gas sensors aids the designers in improving their performance. In this paper, different routes for the modeling and simulation of a semiconducting gas sensor is presented. Subsequently, by employing one of the...

An efficient on-chip inductor-less switching power converter for solar energy harvesting is presented. The new energy-efficient switching power converter improves the charge transfer capability as well as charge sharing time from the harvester to the load. We also present an analytical model to estimate the optimal parameters for maximizing the sys...

This paper proposes a un-grouped-sliding-window-technique (UGSWT) and a state metric normalization technique for logarithmic maximum-a-posteriori-probability (LMAPP) algorithm. We have suggested a decoder architecture based on these techniques for high throughput application. Application-specific-integrated-circuit (ASIC) implementation of the prop...

This paper presents a low power analog front-end for heart-rate detector at a supply voltage of 0.5 V in 0.18 μm CMOS technology. A fully differential preamplifier is designed with a low power consumption of 300 nW. A 150 nW fourth order Switched-opamp switched capacitor bandpass filter is designed with passband 8–32 Hz. To digitize the analog sign...

This work focuses on the VLSI design aspect of high- speed maximum a posteriori (MAP) probability decoders which are intrinsic building-blocks of parallel turbo decoders. For the logarithmic-Bahl–Cocke–Jelinek–Raviv (LBCJR) algorithm used in MAP decoders, we have presented an ungrouped backward recursion technique for the computation of backward st...

This paper presents a chemical reaction-free sensor, based on the osmosis principle, fabricated to measure the change in glucose concentration levels. The sensor consists of a square cavity filled with a known concentration of glucose solution and sealed with a semi-permeable membrane. The volume inside the cavity changes in proportion to the gluco...

This paper presents an architecture for disparity estimation in real time which is designed to be used in a blind navigation assistance system. A highly pipelined hardware prototype has been designed and verified. Sum of Absolute Difference (SAD) algorithm is chosen as the cost function in the proposed architecture. The major design consideration i...

In this paper we have designed a Split-radix type FFT unit without using multipliers. All the complex multiplications required for this type of FFT are implemented using Distributed Arithmetic (DA) technique. A method is incorporated to overcome the result overflow problem introduced by DA method. Proposed FFT architecture is implemented in 180 nm...

Wearable health care systems are an attractive option for continuous monitoring of signals such as ECG and EEG because of their portability and minimization of the discomfort faced by the user. This paper focuses on optimizing a wearable ECG-Monitoring system. The system consists of a Body-Sensor Network made up of patch sensors that are powered wi...

In this paper, a flexible architecture of multi-rate Low Density Parity Check (LDPC) decoder has been presented. It supports six different code-rates which are specified by IEEE 802.16e wireless standard. In the suggested decoder-architecture, column layered decoding technique has been employed to increase the convergence speed. Additionally, the d...

In this paper, we present a simulation study of analog circuit performance parameters for a symmetric double-gate junctionless transistor (DGJLT) using dual-material gate along with high- k spacer dielectric (DMG-SP) on both sides of the gate oxides of the device. The characteristics are demonstrated and compared with DMG DGJLT and single-material...

Assisting the visually impaired along their navigation path is a challenging task which drew the attention of several researchers. A lot of techniques based on RFID, GPS and computer vision modules are available for blind navigation assistance. In this paper, we proposed a depth estimation technique from a single image based on local depth hypothes...

This paper presents the design and simulation of a SiO2 microbridge which measures the differential surface stress induced by the adsorption of molecules. Materials with smaller Young's modulus would be appropriate to measure the small variation of surface stress on the microbridge and therefore SiO2 is chosen as the material for microbridge. The S...

Square microhotplates find their usefulness because of ease of fabrication and high yield compared with bridge or spider membrane. It has been already established that often in microhotplates, an insulation layer is required to separate the thermal domain from other application domains such as gas sensor. However, enhancing the performance of micro...

In this paper, a systematic approach of hardware prototyping and testing a digital design of maximum-a-posteriori (MAP) decoder for a communication system is presented. A MAP decoder architecture for the high speed application is chosen for the implementation on field-programmable-gate-array (FPGA) board. The test-setup of a communication system wi...

The development of deep-submicron CMOS IC fabrication technologies has brought portable, battery operated devices such as cardiac pacemakers and personal heart rate detectors to the market. This paper presents a 1.8 V analog front-end for heart-rate detector. The front-end includes cascaded preamplifier and filter designed to reduce the device flic...

For the transient analysis of bridge membrane, a lumped element model is developed. The developed model is employed for analyzing the effect of increased thermal mass on the thermal time response and steady state power consumption. The model is compared with the FEM simulation results and is in close agreement, with a maximum error of 3.2% and 8% i...

In this paper, the performance of a short channel symmetric double-gate junctionless transistor (DGJLT) is reported at lower drain voltage aiming low power digital applications. The performance parameters namely drain current (ID), threshold voltage (VT), subthreshold slope (SS), drain induced barrier lowering (DIBL), and ON-state to OFFstate curre...

In this study, coding performance of turbo decoder compliant to the physical layer of digital-video-broadcasting-satellite-services-to-handhelds (DVB-SH) standard for additive-white-Gaussian-noise (AWGN) and frequency selective fading channels are presented. The modulation of transmitted bits is carried out with orthogonal-frequency-division-multip...

In this paper, a new state metric normalization technique is proposed for maximum-a-posteriori-probability (MAP) algorithm to enhance the throughput of MAP decoder. Bit-error-rate (BER) performance comparison showed that the MAP algorithm based on the proposed normalization technique has a coding gain of 0.25 dB at a BER of 10-4 in comparison with...

A key challenging area in micro-scale energy harvesting system is that the miniature energy transducers output voltage is very low. This low voltage results lower speed and noise margins in digital circuits and lower dynamic range in analog circuits. Therefore an efficient charge pump circuit is needed which can achieve higher output voltage from t...

Square microhotplates are employed in wide application areas. An improvement in the performance of microhot-plate will be essential for improving the efficiency of the overall system. Selection of a proper Membrane to Heater Ratio (MHR) is critical for the performance of square membrane. The key parameters such as power, uniformity, mechanical reli...

The impact of spacer dielectric on both sides of gate oxide on the device performance of a symmetric double-gate junctionless transistor (DGJLT) is reported for the first time. The digital and analog performance parameters of the device considered in this study are drain current (I D ), ON-state to OFF-state current ratio (I ON /I OFF ), subthresho...

One of the methods, to improve the uniformity of a microhotplate is to provide an insulation layer of optimum dimensions between the heater and gas sensor. In this paper, two insulation layer material, silicon nitride and silicon carbide, are investigated. Simulation studies are carried out to find the optimum dimension of insulation layer, require...

Wafer scale fabrication and characterization of thin-film transistors (TFTs) using 90% and 95% purity of semiconducting single walled carbon nanotubes (s-SWCNTs), with SiO2 and HfOx gate oxide materials and having different gate structure are reported in this paper. The semiconducting nanotube TFTs (SN-TFTs) with high-k dielectric gate oxide (HfOX)...

In this paper we present two architectures for image segmentation using Sobel Operators. The first architecture is designed for optimum speed whereas the second one is designed for low power. To improve the speed of operation and to reduce the memory access two identical processing units operate parallelly. The first architecture is able to segment...

Maximum a posteriori probability (MAP) decoder is an integral part of the most exciting error correcting turbo decoders. A high speed architecture for MAP decoder is an essential entity for the design of high throughput turbo decoder which is widely used in the recent wireless communication standards. In this paper, a new sliding window approach fo...

This paper discusses several radio design issues and presents a systematic approach towards receiver budgeting for LTE standard. IIP3 and noise figure, both showing opposite trends with respect to gain, are the two key parameters considered for budget allocation among the receiver front end modules. 1-dB compression point and IIP3 requirements are...

In this paper, we present a simulation study of analog circuit performance parameters of a dual material double-layer gate stack (high-k/SiO2) (DM-DGS) symmetric double-gate junctionless transistor (DGJLT). The characteristics are demonstrated and compared with dual material gate (DMG) DGJLT and single material (conventional) gate (SMG) DGJLT. DMG...

This paper presents a low-power ultra-wideband baseband transmitter designs for wireless body area networks (WBAN). This is the first time a baseband architecture for UWB PHY is implemented according to the standard IEEE 802.15.6. Since WBAN is the network around the humanbody there are stringent requirements associated with it such as high securit...

Microheaters have been employed in wide variety of applications. While designing microheaters for any specific application, it is necessary to identify the individual loss components because the total power consumption depends primarily on the significant part of loss mechanism. Proper design of a microheater that can perform efficiently over the e...

This paper presents the implementation of Successive Approximation Architecture (SAR) based Analog to Digital Convertors (ADC). In order to reduce the power consumption and increase the speed, a double-tail latch type comparator is incorporated in the design. Charge redistribution DAC is used for area efficiency. A synchronous type SAR Logic with c...

In this paper, a new charge pump circuit which uses single clock swing enhanced scheme to increase the output voltage is proposed. The charge pump circuitry plays a very critical role in energy harvesting, because not only it influences how much power is being extracted from the harvester, but also that its intrinsic power loss affects the net outp...

In this paper, the impact of process induced variations on the electrical characteristics of a junctionless symmetric double-gate transistor (DGJLT) is reported for the first time. The process parameters considered here are gate length (L), thickness of silicon film (Tsi) and gate oxide thickness (Tox). The impact of these process parameters on the...

This paper presents the effects of high-temperature on the major digital and analog performance parameters of a 20-nm channel length n-type symmetric double-gate junctionless transistor (DGJLT) with the help of extensive device simulations. The characteristics are compared with conventional inversion mode counterpart i.e., double-gate transistor (D...

This paper presents a CORDIC based frequency translator for low power radio frequency transmitter to be used in intra-satellite communication. As against the conventional method of using analog up-conversion mixers for frequency translation, an idea has been proposed to use CORDIC for translation. As CORDIC replaces mixer, digital-to-analog convert...