Now showing items 41-50 of 249
Investigation of photodetectors based on iii-nitride and metal oxide thin films deposited by atomic layer deposition
(Bilkent University, 2015-05)
Gallium Nitride (GaN), one of the most attractive optoelectronic materials today with a direct wide band gap of 3.4eV and high electron saturation velocity of, has found many applications from blue/UV LEDs to UV photodetectors, ...
Failure independent path protection against single-SRLG failures in Elastic Optical Networks
(Bilkent University, 2018-03)
In Elastic Optical Networks, exi-grid spectrum allocation is used where the the spectrum is assigned to optical connections according to their bandwidth requirements so that the capacity is used more e ciently. Ensuring ...
Design of an S-band power combiner system with two parallel power amplifiers and phase shifters
(Bilkent University, 2011)
RF power amplifiers are important blocks in a wireless communication system that play a vital role in determining the level of overall performance. In some situations, more power than a single power amplifier can alone ...
Image classification with energy efficient hadamard neural networks
(Bilkent University, 2018-01)
Deep learning has made significant improvements at many image processing tasks in recent years, such as image classification, object recognition and object detection. Convolutional neural networks (CNN), which is a popular ...
A z-gradient coil array system for magnetic resonance imaging
(Bilkent University, 2016-01)
In this thesis, a z-gradient array system for use in MRI is proposed. In MRI scanners, in order to encode the MR signal gradient coils are used. Conventionally, encoding in the z-direction (along the bore of the magnet) ...
Computation of the optimal H∞ controller for a fractional order system
(Bilkent University, 2014)
This work investigates the H∞ optimal controller design for a fractional order system with time delay. For illustrative purposes, a magnetic suspension system model, derived by Knospe and Zhu is considered. The transfer ...
The effect of distribution of information on recovery of propagating signals
(Bilkent University, 2015-09)
Interpolation is one of the fundamental concepts in signal processing. The analysis of the di fficulty of interpolation of propagating waves is the subject of this thesis. It is known that the information contained in a ...
Atmospheric turbulence modeling and aperture analysis for optimizing receiver design and system performance on free space optical communication links
(Bilkent University, 2012)
Strong turbulence measurements that are taken using real time optical wireless experimental setups are valuable when studying the effects of turbulence regimes on a propagating optical beam. In any kind of Free Space ...
Inter-regional connectivity in the human brain during visual search
(Bilkent University, 2016-08)
Separate groups of regions in the human brain are thought to be functionally specialized for representing specific categories of visual objects, and for controlling and deployments of visual attention. It is commonly ...
Influence of deposition conditions on charge-trapping based nonvolatile memories
(Bilkent University, 2014)