Index Catalog // ScholarsArchive@OSU

A 1V 40mA Fast Transient Capless LDO with 7uA Quiescent Current in 180nm CMOS using Ring Amplifier with Adaptive Damping

Creator:: Xiao, Bohui
Abstract:: Ring amplification has emerged as an efficient technique to drive large capacitive loads in switched capacitor circuits. We propose circuit techniques to demonstrate the first application of a ring amplifier in a non-capacitive feedback system of a LDO. These techniques enable a simple cap-less LDO structure in 180nm CMOS that...
Resource Type:: Masters Thesis
Full Text:: , I give my thanks to the other member of graduate Committee: Dr Arun Natarajan, Dr Tejasvi Anand. I

A new data encoding scheme for equalization - Integrated Pulse Width Modulation (iPWM)

Creator:: Ramachandran, Ashwin
Abstract:: This work presents a new data encoding scheme: Integrated Pulse Width Modulation (iPWM) for equalizing lossy wireline channels with the aim of achieving energy efficient wireline communication. The proposed scheme is able to overcome the fundamental limitations imposed by Manchester and Pulse Width Modulation (PWM) encoding on high data rate...
Resource Type:: Masters Thesis
Full Text:: thank Dr. Arun Natarajan for providing guidance and technical insight that played a major role in the

Characteriscts of FSO Channel in WIFO

Creator:: Wang, songtao
Abstract:: With explosive growth of Internet access from smart phones and tablets, increasing bandwidth for WIFI system is badly needed. Depending on two years’ research, we produced a novel communication system called WIFO system, which integrates both RF (Radio Frequency) and FSO (Free Space Optical) techniques. WIFO system can significantly increase...
Resource Type:: Capstone Project

Kalman Filter Tracking for an FSO Communication System based on Dynamic Beam Steering and Shaping

Creator:: Bouchard, Luc F.
Abstract:: We present a theoretical free-space optical (FSO) transmitter that utilizes a dynamically steered and shaped laser beam to communicate with a randomly moving receiver adorned with a retroreflector. The transmitter tracks the receiver's position by repeatedly scanning the field of view (FOV), measuring reflections from the retroreflector, and estimating the...
Resource Type:: Masters Thesis
Full Text:: Bouchard, Author ACKNOWLEDGEMENTS Thank you to Cade Trotter, Hayden Bialek, Alan Wang, and Arun

Design Techniques for Wide-bandwidth Continuous-time Delta-sigma Modulators with Noise-shaping Quantizers

Creator:: Dey, Siladitya
Abstract:: Noise-shaping multibit quantizers in a ΔΣ modulator offer extra orders of noise shaping without increasing the loop-filter order and without compromising the stability of the modulator. This dissertation presents two new architectures for improving the overall performance of continuous-time ΔΣ modulators using noise-shaped quantizers. The first modulator architecture is motivated...
Resource Type:: Dissertation
Full Text:: papers. I would also like to thank my committee members, Professor Gabor Temes, Professor Arun

Modeling and Design of Interconnects and Passive Components for Millimeter-Wave Integrated Circuits in Silicon

Creator:: Zheng, Lei
Abstract:: For mmWave Integrated Circuit (IC) design, co-integration of passives can reduce size and power consumption, increase reliability, and reduce overall cost. However, skin and proximity effects in the metallization are aggravated at mmWave frequencies, resulting in increased attenuation and degradation of overall performance. Furthermore, tight integration of passive components (to...
Resource Type:: Dissertation
Full Text:: Profs. Karti Mayaram, Arun Natarajan and Gabor Temes for being on my program committee. I enjoyed my

An Inductor-Less Multiple Input Single Output (MISO) Energy Harvester Achieving 74.6% Efficiency with Simultaneous MPPT

Creator:: Devaraj, Abhishekh
Abstract:: This work presents an inductor less switched capacitor based energy harvester, which can simultaneously harvest from 2 energy sources (Solar + Piezo). The proposed harvester employs 2D maximum power point tracking algorithm, by changing the conversion ratios of the charge pumps for piezo and solar sources, and 1D voltage regulation...
Resource Type:: Masters Thesis
Full Text:: . Arun Natarajan, Dr. Matthew Johnston and Dr. Sharmodeep Bhattacharyya for taking your time to serve on

Hardware-Based Security Enhancement for Near Field Communication and Other Close Proximity Inductive-Based Communication Systems

Creator:: Kness, Philip J.
Abstract:: Several hardware-based security improvements to Near Field Communication (NFC) and Radio-Frequency Identification (RFID) systems are developed and presented. The improvements are intended to be used in conjunction with software encryption to ensure robust security. Two main implementations for a more secure NFC or RFID system are presented: a jamming system,...
Resource Type:: Masters Thesis

Development and Implementation of JetNet : A Decentralized Wireless Sensing Protocol

Creator:: Goins, Justin B.
Abstract:: Modern sensor network applications are often implemented wirelessly in order to lessen installation costs and reduce deployment times. Unfortunately, these wireless sensor network (WSN) nodes must often rely on batteries or energy harvesting techniques in order to sustain their operation and supply the power needed to maintain communication within the...
Resource Type:: Dissertation
Full Text:: you also to the other individuals who served on my PhD committee throughout the years: Dr. Arun

Ring Amplifier Design Techniques for High-Precision and High-Speed Amplification

Creator:: Leuenberger, Spencer
Abstract:: Demands of today's integrated society dependent on communication systems have driven the creation of ever more efficient analog-to-digital converters. For the same reasons, digital circuitry has rapidly expanded to serve all the different systems and needs of consumers. The trend of technology development has been to make these digital circuits...
Resource Type:: Dissertation
Full Text:: Dr. Temes, Dr. Mayaram, and Dr. Natarajan, thank you for providing advice over my five years here in

ScholarsArchive@OSU

A 1V 40mA Fast Transient Capless LDO with 7uA Quiescent Current in 180nm CMOS using Ring Amplifier with Adaptive Damping

A new data encoding scheme for equalization - Integrated Pulse Width Modulation (iPWM)

Characteriscts of FSO Channel in WIFO

Kalman Filter Tracking for an FSO Communication System based on Dynamic Beam Steering and Shaping

Design Techniques for Wide-bandwidth Continuous-time Delta-sigma Modulators with Noise-shaping Quantizers

Modeling and Design of Interconnects and Passive Components for Millimeter-Wave Integrated Circuits in Silicon

An Inductor-Less Multiple Input Single Output (MISO) Energy Harvester Achieving 74.6% Efficiency with Simultaneous MPPT

Hardware-Based Security Enhancement for Near Field Communication and Other Close Proximity Inductive-Based Communication Systems

Development and Implementation of JetNet : A Decentralized Wireless Sensing Protocol

Ring Amplifier Design Techniques for High-Precision and High-Speed Amplification

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