A5082236298- High voltage insulation and dielectric phenomena
- Analog and Mixed-Signal Circuit Design
- Power Transformer Diagnostics and Insulation
- Radio Frequency Integrated Circuit Design
- Lightning and Electromagnetic Phenomena
- Advancements in Semiconductor Devices and Circuit Design
- CCD and CMOS Imaging Sensors
- Atmospheric chemistry and aerosols
- Low-power high-performance VLSI design
- Advancements in PLL and VCO Technologies
- Advanced DC-DC Converters
- Multilevel Inverters and Converters
- Advanced Power Amplifier Design
- Electric Motor Design and Analysis
- Fire Detection and Safety Systems
- Fire effects on ecosystems
- Induction Heating and Inverter Technology
- Atmospheric and Environmental Gas Dynamics
- Advanced Battery Technologies Research
- Electromagnetic Compatibility and Noise Suppression
- Semiconductor materials and devices
- Geophysical Methods and Applications
- Power Quality and Harmonics
- Power System Optimization and Stability
- VLSI and Analog Circuit Testing
Texas Instruments (United States)
2010-2024
SRM Institute of Science and Technology
2005-2024
Intel (United States)
2023
Vellore Institute of Technology University
2016-2021
Sathyabama Institute of Science and Technology
2020
SASTRA University
2006-2016
Bharath University
2015
Sri Sivasubramaniya Nadar College of Engineering
2013
Georgia Institute of Technology
2003-2008
Yahoo (United Kingdom)
2006
The three-level diode-clamped multilevel converter commonly called the neutral-point-clamped has become established to be a preferred topology for high-power motor drive applications operating at several kilovolts. Although solutions problem of maintaining stable neutral-point voltage in continue topic research, simple solution based on design-oriented dynamic model system is not widely known. This paper presents design, analysis, and implementation regulator inverter, which uses...
Radar is a key sensing technology for advanced driver assistance systems and autonomous vehicles due to its strong detection capability, long range, robustness environmental variations such as inclement weather lighting extremes. As these radars demonstrate increased levels of integration performance [1,3], it desired have single multimode radar transceiver that can address the stringent form factor constraints corner wide narrow field-of-view requirements front used in urban highway...
Millimeterwave (mm-Wave) radar sensors operating in the 76-to-81 GHz band are a key component of advanced driver-assistance systems (ADAS) for enhanced automotive safety. The recent entry CMOS solutions this space has accelerated development multi-mode Radars that can support long, medium and short-range applications [1-3]. As ADAS evolve to higher levels autonomy, there is increased demand on improved maximum range, velocity, angular resolution. Emerging in-cabin occupancy sensing creating...
A long-term offset cancellation scheme that enables continuous-time amplifier operation is described. Offset achieved by programming floating-gate transistors form an integral part of the amplifier's architecture. The voltage a single-stage folded cascode has been programmed to minimum plusmn25 muV in 0.5 mum digital CMOS process. drift calculated be less than over period 10 years at 55degC from thermionic emission model for charge loss. varies maximum 130 temperature range 170degC, thereby...
The straightforward and dependable Savonius turbine has a lot of promise for capturing wind energy in low-speed settings. However, poor aerodynamic performance frequently restricts its effectiveness. This study uses numerical modeling methods to examine how different sweep angles with constant depth affect performance. turbine's behaviour, torque production, power coefficient were examined using parametric optimization various angle fixed variable configurations. results highlight the...
Generative AI technologies are emerging nowadays and they transform the way of user interaction with information, allows systems to deliver accurate responses queries. This research focuses on creating a Retrieval Augmented Generation Chatbot as an e-learning assistant where it fetches data from pdf document that is trained give precise query. created specifically for subject “Artificial Intelligence” user-queries related Artificial Intelligence. The system uses Flask backend React frontend....
Artificial Intelligence (AI) is revolutionizing data interaction by making it more efficient, accessible, and user-friendly. Traditionally, extracting insights from structured stored in CSV files, Excel spreadsheets, databases required manual processing through SQL queries mathematical formulas. These conventional methods were not only time-consuming prone to human error but also demanded significant technical expertise limiting accessibility for the non-technical users. To overcome these...
We describe a compact programmable CMOS reference, where the reference is determined by charge difference between two floating-gate transistors, thereby making insensitive to temperature and other environmental effects. Using transistors adds programmability wide range of voltages possible with negligible long-term drift. A prototype circuit has been implemented in 0.35-mum process, ranging from 50 mV 0.6 V have achieved. demonstrate voltage programming accuracy plusmn40 muV . Experimental...
PowerVia Technology [1] is a novel innovation to extend Moore's Law scaling by having Power Delivery on the backside. This paper presents pre & post-silicon findings from implementing an Intel E-Core in Technology. enabled standard cell utilization of >90% large areas core while showing >5% Frequency benefit Silicon due reduced IR drop. Successful Post-Silicon debug demonstrated with slightly higher but acceptable throughput times. The thermal characteristic test-chip line power densities...
Software-defined radio receivers increasingly exploit linear RF V-I conversion, instead of voltage gain, to improve interference robustness. Unfortunately, the linearity CMOS inverters, which are often used implement is highly sensitive Process, Voltage and Temperature variations. This paper proposes a more robust technique based on resistive degeneration. To mitigate third-order IM3 distortion induced by quadratic MOSFET I-V characteristic, new linearization proposed exploits floating...
We present a 128/spl times/32 four-quadrant programmable current-mode analog vector-matrix multiplier (VMM). The proposed cell operates on 3.3 V supply, consumes 531 nW/MHz and is linear over two decades of current range. Programmability non-volatile weight storage obtained by using floating-gate transistors. Experimental results for full image discrete cosine transform (DCT) the architecture presented. IC prototype was fabricated in 0.5 /spl mu/m CMOS process occupies 0.83 mm/sup 2/ area.
A significant increase in Smartphones and tablets with embedded Wi-Fi demands a low-cost system solution. In this paper the RF core of an 802.11n 2×2 b/g band, 2×1 a-band MIMO WLAN SoC die area 3.83mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> 45nm CMOS is described. As shown Fig. 19.1.1 has integrated Power Amplifier (PA) for both bands T/R switch eliminating need expensive external Front-End Module. The LO synthesized by two-step...
The output power of solar photovoltaic (PV) system is intermittent in nature with a non-linear voltage. This has peak points accordance varying irradiation and temperature. Hence Maximum Power Point Tracker (MPPT), which extraction technique essential PV systems to ensure maximum delivery for given point time. Thenonlinear voltage curve gets more intense when shading panels takes place, as the receive irregular different irradiation, alters profile –voltage (P-V) curves. Due partial shading,...
Continuous-Time ΔΣ Modulators are a popular architecture choice for ADCs in deep-submicron processes [1-4]. The maximum sampling rate is set by Excess Loop Delay (ELD) considerations. ELD comprises the comparator latency, feedback DAC delay (DEM etc.) and any additional due to parasitics. For wideband 1b modulator clocking at high speeds (multi-GHz), key challenge stability large speed limitations integrator parasitic poles. This paper describes circuit techniques minimize compensation...
Lightning is one of the inevitable disastrous phenomena which in addition to damaging tall edifices, might also consequently endanger humans due lightning-human interactions. This research focuses on analyzing lightning hazards vicinity heritage monuments India and Sri Lanka. Five include three giant stupas namely Ruwanweliseya, Jethawanaramaya Abayagiriya from Lanka two large temples Brihadishvara Temple Gangaikonda Cholapuram have been chosen for investigation. Lightning-human interaction...
A long-term offset cancellation scheme that enables continuous-time amplifier operation is described. Offset achieved by programming floating-gate transistors form an integral part of the amplifier's architecture. The voltage a single-stage folded cascode reduced to plusmn25 muW in 0.5mum digital CMOS process. drift 0.5 muV over period 10 years at 25degC and varies maximum 130muV temperature range 170degC
In this paper we examine the modeled daily toxaphene air concentrations from September 9 to 13, 2000, during which concentration levels were 2−3 orders of magnitude higher than those derived in situ measurements around Great Lakes same year and 1990s. Meteorological conditions revealed that a typical deformation flow system associated with high-pressure extending east coast Canada southern United States was one critical elements enabled transport Lakes. Cloud bands seen on satellite imagery...
This paper presents an overview of floating-gate transistors with emphasis on using them as programmable elements to correct mismatch inherent in analog circuit design. The design methodology is such that MOSFETs play the role while forming part circuitry interest, well. Such approach results a compact architecture minimal additional power. Accurate programming key successful implementation discussed along experimental demonstrating charge retention. An several examples provided demonstrate...
This paper proposes architectures to comprehensively monitor the functionality of a 76-to-81GHz Frequency Modulated Continuous Wave (FMCW) radar front end, for safety critical automotive applications. These on-chip monitors periodically measure performance parameters and internal voltages transmitters (TX), receivers (RX) local oscillator (LO), detect failures in field. They are implemented as combination mm-wave, analog, digital firmware components IC 45nm CMOS technology.