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Dissertations/Theses - Department of Electrical and Electronic Engineering: Recent submissions

Now showing items 401-420 of 775

Development of an analytical model of erbium doped silicon laser diode

Zahid Hossain, Md. (Department of Electrical and Electronic Engineering, BUET, 2006-07-23)

An analytical model is developed for laser operation from erbium doped silicon. The mechanism of erbium excitation through Shockley-Read-Hall (SRH) recombination process in silicon is analyzed for conditions of achieving ...
Design of an FPGA based high precision digital energy and power quality meter

Ashraful Anam, Mohammad (Department of Electrical and Electronic Engineering, BUET, 2008-10-29)

Traditional analog energy metcrs arc unable to copc with the rapidly changing load and cannot measure energy consumed by high frequency harmonic contents of the power. Singlc phase digital energy meters havc bccn devcloped ...
Design of a single phase rectifier with switching on the AC side for high power factor and low total harmonic distortion

Mehjabeen Akhtar Khan (Department of Electrical and Electronic Engineering, BUET, 2006-06-18)

A scheme for improving the input current waveshape of a single phase bridge rectifier has been proposed and analyzed. A bridge rectifier with filter capacitor connected to reduce ripples of output voltage draws discontinuous ...
Fault tolerant optimized broadcast for wireless ad-hoc networks

Mamtaj Akter (Department of Computer Science and Engineering (CSE), 2015-07)

Many broadcasting protocols for ad-hoc wireless networks perform poorly in situations when network becomes untrusted. In real environment, any node can be unavailable or be unable to receive broadcast packet or to forward ...
Optimization of photovoltaic characteristics of organic solar cell by incorporating carbon nanotube

Ashraful Haider Chowdhury (Department of Electrical and Electronic Engineering (EEE), 2015-05)

Optimization of the photovoltaic characteristics can be a strong tool for designing organic photovoltaic (OPV) cell with high power conversion efficiency (PCE). This thesis advances the field of carbon nanotube (CNT) organic ...
Design of a harmonic restrained static relay for a single phase transformer

Mothaher Hossain, Mr. (Department of Electrical and Electronic Engineering, BUET, 2006-06-17)

Large Transformers are provided with differential relays to isolate them during severe internal faults. In the case of transformers, the differential relays need to prevent tripping for inrush currents. As a result ...
Ultra wideband receiver design for on-chip wireless interconnect

Ariful Haque, Mohammad (Department of Electrical and Electronic Engineering, BUET, 2005-07-13)

The information revolution and upcoming era of silicon ultra large-scale integration (ULSI) have demanded an ever-increasing level of functional integration on single chip structure, driving a need for greater circuit ...
Analysis of bit error rate performance of active and passive RFID communication systems with diversity

Khalid Mahmud (Department of Electrical and Electronic Engineering (EEE), 2015-05)

Radio Frequency Identification (RFID) is a wireless data communication technology, which uses Radio Frequency wave for communicating between the reader and the tag. Over the past few decades this massively expanding ...
Compact modeling of direct tunneling gate current considering quantum mechanical corrections in nano-scale mosfets

Ahosan - Ul - Karim, Muhammad (Department of Electrical and Electronic Engineering, BUET, 2010-02)

A physically based, accurate model for the direct tunneling (DT) gate current of nano-scale MOS devices considering quantum mechanical (QM) effects is developed. Effect of wave function penetration into the gate-dielectric ...
Gaussian-Hermite moment-based depth estimation from monocular image for stereo vision

Samiul Haque (Department of Electrical and Electronic Engineering (EEE), 2015-07)

Depth estimation has turned into an emerging and challenging eld of research in computer vision. The ubiquitous availability of stereo display technology has increased the demand of visual media with depth information. ...
Optical time division demultiplexing using the gain saturation effect of semiconductor optical amplifier

Neamul Hasan, Md. (Department of Electrical and Electronic Engineering, BUET, 2009-12-29)

A novel model for an OTDM demultiplexer based on Cross Gain Modulation in a SOA is developed. Analysis is carried out to evaluate the performance of the OTDM demultiplexer in terms of output signal corresponding to '0' ...
Development of a computational model for transmission planning of voice over internet protocol networks

Shahidul Alam, Md. (Department of Electrical and Electronic Engineering, BUET, 2008-12-28)

For abstracts please see full text
Modeling of physical and electrical properties of boron doped silicon microneedle grown by vapor liquid solid (VLS) mechanism

Kamrul Hasan (Department of Electrical and Electronic Engineering (EEE), 2011-07)

Silicon microneedles are currently of great interest as one of the most useful and powerful forms of Si microstructures that could provide a promising option for emerging electronic systems. Microneedle have novel ...
Design and analysis of an active low loss technique for series electrolytics to maintain high DC bus voltage of a converter

Mohsiul Haque, Muhammad (Department of Electrical and Electronic Engineering (EEE), 2010-09)

In this thesis, analysis of an active low loss approach to maintain the DC voltages across series connected electrolytic capacitors used in a converter is presented. The proposed design mitigates the impact of leakage ...
Performance analysis of rain fades on terrestrial optical and microwave earth - to satellite links

Mahfujur Rashid, Mohammad (Department of Electrical and Electronic Engineering (EEE), 2010-06)

Rain is a dominant source of attenuation at higher frequencies and consequently it degrades the system performance of microwave satellite and terrestrial links in tropical and subtropical regions. Bangladesh has a ...
Identification and mitigation of throughput unfairness in WLANs

Sultan Mahmud, Md. (Department of Electrical and Electronic Engineering (EEE), 2014-04)

Co-channel interference exists in IEEE 802.11 based wireless local area networks (WLANs) due to the limited number of non-overlapping channels in the current standards. In this thesis, the impact of co-channel interference ...
Performance analysis for smart antennas with orthogonal frequency division multiplexing based wireless networks

Qudrat-E-Maula, Mohammad (Department of Electrical and Electronic Engineering, BUET, 2005-07-05)

The aim of this thesis work is to design a smart antenna based receiver in an Orthogonal Frequency Division Multiplexing (OFDM) system to improve the system performance and to reduce the computational complexity. OFDM ...
ECG compression using rule based thresholding of wavelet coefficients

Sharafat Hossain, Md. (Department of Electrical and Electronic Engineering, BUET, 2008-04-29)

The electrocardiogram (ECG), one of the most vital medical signals, represents the electrical activity of a heart. ECG is a well-established diagnostic tool for cardiac abnormality. For the goal of efficient and convenient ...
Input current improvement of a three phase rectifier by C^uk regulator

Ruma (Department of Electrical and Electronic Engineering, BUET, 2008-09-17)

AC to DC conversion is a very common need in many applications. The conversion is usually accomplished by controlled or uncontrolled single phase or three phase rectifiers. Rectifiers are popular in industrial and ...
Classification of ECG using chaotic models

Akbarul Ahsan, Mohammad (Department of Electrical and Electronic Engineering, BUET, 2008-06-10)

Chaotic analysis which works all the nonlinear dynamics ofa system has been shown to be useful in a variety of medical applications, particularly in cardiology. Chaotic parameters have shown potential in the identification ...

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