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تصميم مضخمات قدرة راديوية التردد بتقنية CMOS مع محولات جامعة للقدرة == Design of RF Power Amplifiers With Power Combining Transformers

Author name: سهاد حسين جاسم
Supervisor name: احمد سعدون عز الدين
Specific topic: Electronic Engineering
Degree: Master
Language: English
University location: Baghdad
First pages:
Abstract: باستخدام تقنية CMOS، تواجه تكامل مضخمات القدرة العديد من التحديات بمستوى الواط والمستخدمة لتطبيقات الاتصالات اللاسلكية. وللتغلب على هذه المحددات، يمكن استخدام عدد من الوسائل واطئة الفولتية ودمجها بكفاءة باستخدام المحولات على الرقاقة لزيادة قدرة الخرج النا | In CMOS technology, many challenges face the integrated watt level power amplifiers (PAs) used in wireless applications. Consequently, to overcome these limits, several low voltage devices should be combined efficiently with on - chip transformers in order to increase the resulting output power. In this work, two high - performance Radio - Frequency (RF) power amplifiers for watt level applications are designed and simulated in deep submicron (0.13 µm) CMOS process technology using “Agilent Advanced Design System ADS 2011.10 with “BSIM4” as a simulation module for Metal - Oxide - Semiconductor Field - Effect Transistor (MOSFET) devices. The design includes a comparison for the conventional transformer combining techniques SCT, PCT and the hybrid type PSCT. The amplifiers incorporate a parallel combination of four differential PA cores to generate high output power with good efficiency and linearity. The first part of the work presents a design for a watt - level class - AB power amplifier based on transformer type power combiner PSCT for WLAN applications. The PA delivers an Output Power (Pout) of 30 dBm, Power Gain (Gp) of 30 dB and 40% Power Added Efficiency (PAE) under 2.5 V supply. In the second part of the work, a class - E PA based on transformer type power combiner PSCT is designed. The power amplifier provides an output power of 30 dBm, power gain of 30 dB, and 54% PAE at 2.45 GHz under 1.6 V supply. Finally, in the third part of this work, an on - chip output transformer layout for the proposed power amplifiers is designed and simulated with momentum RF EM simulator of ADS 2011.10 in order to realize a fully integrated power amplifier. The simulated efficiency of the PSCT was 78% with minimum insertion losses (ILmin) 0.87 dB.

تصميم متحكم ذكي لنظام تتبع شمسي بالاعتماد على مصفوفة البوابات الرقمية القابلة للبرمجة == Design of Intelligent Controller For Solar Tracking System Based On FPGA

Author name: ياسر محمد عبد
Supervisor name: حنان عبد الرضا عكار
Specific topic: Electronic Engineering
Degree: Master
Language: English
University location: Baghdad
First pages:
Abstract: ان الحاجة لزيادة توليد الطاقة الكهربائية جعل استخدام الخلايا الشمسية تلعب دورا هاما في الحياة اليومية، وعليه من المهم استخدام نظام يسمح بتتبع الخلايا الشمسية لضوء الشمس لزيادة او الحصول على القيمة المثلى للطاقة الكهربائية من الخلايا الشمسية. تم في هذا ا | The need to increase the energy generation makes the use of solar cells plays an important role in the daily life. For this reason, it is important to use solar tracking system to increase or getting almost optimum value from solar cells. In this thesis, solar cells model was implemented using MATLAB to show the characteristics of any solar cell depending on data sheet. Intelligent controllers was designed and used to make solar cells facing the sun all days. The proposed controller was trained by two ways; the first was trained by supervised feed forward neural network and the second by Particle Swarm Optimization (PSO) and then comparing the results obtained. The controller was trained using MATLAB and the converting it to simulink model in order to test it, and converts, it to a Very high speed integrated circuit Hardware Description Language (VHDL) language using MATLAB tool box in order to download it on Spartan 3A Field Programmable Gate Arrays (FPGAs) card. This makes the implementation of the intelligent controller more efficient and easy to use because of its reprogram - ability and the high speed performance. The controller was designed to a fully controlled DC motor driver which is used to rotate two DC motors in X - axis and Y - axis directions respectively.The experimental results show that tracking sun increases the efficiency of the system to produce energy from solar cell about 44.3778 % more energy than the solar cell without tracking system.

نظام كشف وتمييز لوحة الرخصة للسيارات العراقية == License Plate Detection And Recognition System For Iraqi Cars

Author name: ثائر عذار هاشم
Supervisor name: اياد ابراهيم عباس
Specific topic: Electronic Engineering
Degree: Master
Language: English
University location: Baghdad
First pages:
Abstract: نظام كشف وتمييز لوحات ارقام السيارات هو تقنية في معالجة الصور يستخدم للتعرف على السيارات من خلال لوحات الارقم الخاصة بها, او بكلمات اخرى هي تقنية تستخدم لتحويل نص صورة لوحة ارقام السيارات الرقمية الى ملف نص ممكن ان يحرر ويستخدم في اي برنامج او تطبيق اخر | Automatic License Plate Detection and Recognition (ALPDR) system is an image processing technology used to identify vehicles by their license plates, or in other words, is a technology used to convert the text on digital images of vehicle license plates to a text file that can be edited and used as such by any other program or application that needs it.License Plate Detection and Recognition system for Iraqi cars have a wide range of applications; it is used to extract plate number to create automated solutions for various problems. Among these applications : parking, border crossing, traffic control, access control and stolen cars tracking.This system consists of two main parts : the first is a practical implementation of how to take a picture automatically for cars passes, this was done by two sensors type (GP2Y0A21YK0F sensor) connected with each other and interfaced with a camera (A4tech USB camera), this camera is interfaced using Matlab with the PC. The camera is attached using USB port. The second part is image processing, this part includes four basic stages : The first stage is image preprocessing which involves image normalization and RGB to gray image conversion. Second stage is detection of a possible license plate using edge detection technique and extracts these LP using region growing technique, detection rates reach to 95%. Third stage is alphanumeric character segmentation to isolate each character, numbers and words of the license plate using Otsu's and Hough transforms technique for subsequent recognition. The last stage reads the alphanumeric character and words by correlation template matching, which is a simple, fast and given a recognition rate reach to 98.245%.

تعزيز اداء اتصالات الراديو عبر الليف احادي ومتعدد الطول الموجي بواسطة تقنية التضمين == Performance Enhancements of Single And Multi - Wavelength Radio Links Over Fiber By Modulation Technique

Author name: مصطفى عبد الهادي جليل
Supervisor name: عايد خلف محمد
Specific topic: Communications Engineering
Degree: Master
Language: English
University location: Baghdad
Key words:
  • Radio - over - Fiber (RoF)
  • Quadrature Phase Shift Keying (QPSK)
  • Quadrature Amplitude Modulation (QAM)
  • Orthogonal Frequency Division Multiplexing (OFDM)
  • Digital Signal Processing (DSP) Unit
First pages:
Abstract: تم تطوير تكنولوجيا الراديو عبر الالياف منذ اواخر القرن العشرين، وتم استخدامها في مجموعة من التطبيقات لانظمة الاتصالات ويعتبر الراديو عبر الالياف هو الجيل المقبل من انظمة الاتصالات لما يمتاز به من العديد من المزايا مقارنة مع النظام التقليدي مع توهين منخفض | Radio - over - Fiber (RoF) technology has been developed since the late 20th century and has been used efficiently in a range of applications for communication systems. Radio over fiber system is the next generation of communication systems because it has many advantages compared with conventional system with low attenuation, enormous bandwidth of optical fiber, and extension of existing coverage and capacity. RoF system refers to the radio signals which are modulated with optical signal and transmitted over optical fiber link from Central Office (CO) to the Remote Nodes (RNs).In this work, several RoF systems have been designed and simulated with different modulation techniques using commercial software package called “Optisystem v.12”. Furthermore, these systems were compared with each other to check for better performance. These systems are presented as follows : The first system is RoF with Quadrature Phase Shift Keying (QPSK), 16 - Quadrature Amplitude Modulation (16 - QAM), and 64 - QAM schemes with and without OFDM technique. The simulation results of this system show that the Signal to Noise Ratio (SNR) for 64 - QAM - OFDM higher than SNR for QPSK, 4 - QAM and 16 - QAM with OFDM at 10 - 9 symbol error, after 50 km of SMF length without any amplification or compensation techniques. In addition, also SNR for 64 - QAM - OFDM higher than SNR for other techniques in this work after 160 km of fiber length.The second system is the RoF with QPSK and 16 - QAM schemes with Digital Signal Processing (DSP) unit in the receiver side. The simulation results of this system show that the Error Vector Magnitude (EVM) for QPSK scheme with DSP unit is 14.5% and 85.5% without DSP unit after 50 km of fiber length. Furthermore, the EVM for 16 - QAM with DSP unit is 7.5%, but the EVM for the same system without DSP unit is 91%. In addition, the EVM for QPSK with DSP equal to 11.5%, but the EVM for 16 - QAM with DSP equal to 9% after 160 km of fiber length.The third system is RoF system with two multiplexing techniques, 8×10 Gbps WDM - RoF system and 4×5 Gbps SCM - RoF system, have been simulated with 4 - QAM - OFDM, 16 - QAM - OFDM and 64 - QAM - OFDM schemes. The fourth system was to combine the techniques of wavelength division multiplexing (WDM) and subcarrier multiplexing (SCM) to increase the capacity of the system by 20×8 Gbps data rate. The simulation results show that the SCM - WDM - RoF with 64 - QAM gives high SNR compared with SCM - WDM - RoF system with other modulation schemes which have been used in this work.

تحسين الاستقرارية باستخدام التوليد الموزع في شبكة النجف الاشرف الكهربائية == Stability Enhancement Using Distributed Generation In Al - Najaf Al - Ashraf Electrical Network

Author name: زيد طارق حسن
Supervisor name: رشيد حميد الربيعي
Degree: Master
Language: English
University location: Baghdad
First pages:
Abstract: ان عمل وتركيب نظام التوزيع يتغير مع اضافة وحدات التوليد الموزع (DG )، حيث انها تؤثر على خسائر القدرة، الاستقرارية، الفولطية، جودة الطاقة وكميات اخرى، لذلك اختيار الموقع الامثل والحجم وعدد وحدات التوليد الموزع (DG ) ضروري لتجنب التاثيرات السلبية على نظا | The operation and structure of distribution system are changing with the integration of distributed generation (DG), where the DG may have effect on power losses, stability, voltage profile, power quality and other quantities, therefore the optimization of location , size and number of DG are necessary to avoid the negative impacts on electric power system.In this work, the Particle Swarm Optimization (PSO) technique is used to find the optimal number and locations of DG in order to minimize the active power losses. The thermal limit of transmission lines and transformers was studied in cases , with DG and without DG, to detect the lines or transformers which exceed the limit in order to processed it. The voltage stability of distribution network has been investigated, using L index (which aims to detect the vulnerable load buses of an electrical power system). Also the rotor angle transient stability of DG units has been calculated to specify the critical clearing time (CCT) of each circuit breaker in distribution network when one of transmission lines is exposed to three phase to ground fault. The developed algorithm has been verified using two test systems IEEE 33 - bus distribution system and the WSCC 9 - bus test system, furthermore applied to a part of Iraqi distribution network (Al - Najaf Al - Ashraf distribution network). Two softwares are used in this work , the first is Matlab R2013a for implementation of the PSO and voltage stability algorithms while the second software is Power World Simulator 15 for implementation of the thermal limit of transmission lines and transformers, and rotor angle transient stability of DG units.DG contributed significantly to reduce the power losses in Al - Najaf Al - Ashraf distribution network, where there is a reduction by about 96% in active losses. Also DG processed the overload of large substations and the stability of buses in the network.

تصميم وتصنيع والتحقق من الخلية الشمسية ذات الصبغة الحساسة للضوء == Design, Fabrication And Verification of Dye Sensitized Solar Cell DSSC

Author name: صابرين سمير حسان
Supervisor name: ثائرة زكريا الطيار
Specific topic: Electronic Engineering
Degree: Master
Language: English
University location: Baghdad
Key words:
  • Dye sensitized solar cells
  • natural dyes
  • synthetic dye
First pages:
Abstract: Solar cells are considered a promising technology and renewable, in view of increasing in the electro - optical energy. The continual enhancement in solar cell efficiency by searching for new concepts and techniques, which should grow since it is considered as one of the important sources of energy of the future.This work introduces a type of solar cells that employs photosensitive organic dye. These cells use thin membrane of Titanium dioxide material as nanoparticles covered by an organic dye, which absorbs solar energy (like the chlorophyll in green leaves) to be converted into electrons that are injected into the Titanium dioxide layer, which serves as electron collector. In addition, it has an electrolyte solution to compensate for the electrons lost by the organic dye molecules.The cell's positive terminal was prepared from the deposition of a thin membrane of Titanium dioxide, of 22 micrometer thickness on a conductive glass electrode , followed by heat treatment at 450? for 30 minutes. Three organic dyes were used, two of (Cherry juice mixed with Hibiscus and the Berries juice) which were natural dyes, and the other synthetic, the "Eosin" as an industrial dye. Small quantities of Iodine and Potassium Iodide were dissolved in Ethyl Alcohol of 99.9% concentration in order to prepare the electrolyte solution. As to the negative terminal, it was prepared from the deposition of a graphite layer, used in pencils, onto a conducting glass electrode. The final stage involved the assembly of the different prepared cell components and tested.The equipment used in this work included spectrum analyzer for provision of absorption spectra for the three dyes.The cells have been tested by exposure to light of 100W/cm2 to obtain I - V characteristic curve and the greatest current is obtained with the Cherries and Hibiscus cell was 6.205 mA/cm2 and the maximum voltage 0.569 V. As to the Berries dye cell, the maximum current is found 4.35 mA / cm2 and its maximum voltage 0.607 V. The maximum current and voltage for the Eosin dye cell are found to be 1.32 mA/ cm2 and 0.651V.The conversion efficiency for the Cherry and Hibiscus dye cell is found to be 1.9%, the Berries dye cell 1.5% and for the Eosin dye 0.5%.

تمييز قزحية العين باستخدام التحويل الموجي والشبكات الاصطناعية

Author name: احمد عز الدين عبد الله
Supervisor name: هديل نصرت عبد الله
Specific topic: Electronic Engineering
Degree: Master
Language: English
University location: Baghdad
First pages:
Abstract: التعرف على قزحية العين هي تقنية القياس الحيوي التي تتناول تحديد الهوية على اساس قزحية الانسان. يعتبر تميز القزحية من انواع التكنولوجيا الحيوية الاكثر دقة المتاحة اليوم بالمقارنة مع انواع كثيرة من التقنيات البيومترية المستخدمة مثل : مسح بصمات الاصابع، التعر | Iris Recognition is a Biometric Technology which deals with identification based on the human iris. It is considered to be the most accurate biometric technology available today compared with many kinds of biometric technologies used, like Fingerprint scanning, Face recognition, Voice recognition and Hand geometry scanning because it has some advantages, such as uniqueness, stability and high recognition rate etc., makes iris recognition so accurate.In this proposed system, two database systems are used. The first is CASIA database system (version 1.0)(Chinese Academy of Sciences Institute of Automation). And, the second is Real database system by using real persons (each with many images) for recognition through camera Mobile Type of Galaxy Note3. An approach to get more accuracy of the offline iris recognition is composed of many steps : capturing the iris image, determining the location of the iris boundaries, normalization, preprocessed using median filter to remove noise, using wavelet transform for two types of filter, Haar and Daubechies, in order to extract the features and finally using the matching by artificial feed forward neural network with back propagation algorithm (FFBNN) for training and testing iris image.In CASIA system, the iris recognition rate for Haar filter was 84.2% and for Daubechies filter was 92.8%, while in the real system, iris recognition rate for Haar filter was 90% and for Daubechies filter was 98.7%. This means the Daubechies filter is the best in execution time and mean square error from the Haar filter. Finally, efficiency of this system is logical, because the performance measurement of False Acceptance Rates was reasonable. The results and the experiments were implemented by P4 computer and the software package MATLAB (R2011a).

مراقبة الانحدار في الاداء لمحركات التيار المستمر بالاستناد الى مصفوفة البوابات المنطقية القابلة للبرمجة باستخدام طريقة البرمجيات الذكية == FPGA Based Performance Degradation Monitoring Of DC Motor Using Soft Computing Approach

Author name: بلال زهير احمد
Supervisor name: عباس حسين عيسى
Specific topic: Electronic Engineering
Degree: Master
Language: English
University location: Baghdad
First pages:

السمات الاقتصادية لتطبيق المكثفات على شبكات التوزيع == Economical Aspects Of Capacitors Application To Distribution Networks

Author name: وائل نبيل عبد الخالق
Supervisor name: حسين جعفر المشاط
Degree: Master
Language: English
University location: Baghdad
First pages:

تصميم شبكة عصبية ذكية باعتماد الحسابات العشوائية وباستخدام رقاقة الشرائح المبرمجة == Implementation Of Reconfigurable Stochastic Artificial Neural Network Using FPGA

Author name: منال حمادي جاسم
Supervisor name: معتز شناسي عبد الوهاب | حنان عبد الرضا عكار
Specific topic: Electronic Engineering
Degree: Doctorate
Language: English
University location: Baghdad
First pages:

تصميم ومحاكاة مصفوفة كانتور للهوائيات الخطية == Design And Simulation Of Cantor Linear Antenna Array

Author name: فواز جنان جبرائيل
Supervisor name: رفعت طالب حسين
Specific topic: Communications Engineering
Degree: Master
Language: English
University location: Baghdad
First pages:

تحقيق وتقيم خوارزميات الدقة العالية في تحديد اتجاه مصادر الاشارات لمختلف انواع المتحسسات المرتبة بشكل مصفوفات هندسية == Investigation And Evaluation Of Superresolution Algorithms For Different Array Geometries Of Direction - Of - Arrival

Author name: اياد ابراهيم عباس العبيدي
Supervisor name: وليد امين الجوهر
Specific topic: Electronic Engineering
Degree: Doctorate
Language: English
University location: Baghdad
First pages:

Human Eyes Location Using Wavelet And Neural Networks

Author name: احمد محمد زكي
Specific topic: Electronic Engineering
Degree: Doctorate
Language: English
University location: Baghdad
First pages:

تحسين الاستقرارية لمنظومة القدرة الكهربائية من خلال تنسيق عمل منظومات السيطرة الخاصة بمولدات الشبكة == Enhancement Of Power System Stability By Coordinated Systems Control Of Generators

Author name: محمد جاسم محمد عبيس ال عيسى
Supervisor name: رشيد حميد الربيعي
Degree: Master
Language: English
University location: Baghdad
First pages:

التحقق من تقنيات المعادل التكيفي لمنظومة مزج تقسيم التردد المتعامد == Investigation Of Adaptive Equalizer Techniques For OFDM System

Author name: علي نجدي عبد الله
Supervisor name: ثامر محمد جميل
Specific topic: Communications Engineering
Degree: Master
Language: English
University location: Baghdad
First pages:

Design And Implementation Of A Wireless Local Area Network

Author name: حسين عبد الرزاق لفتة
Supervisor name: Mutaz S. Abdul-Wahab | Abdulsattar M.Ahmed
Specific topic: Electronic Engineering
Degree: Master
Language: English
University location: Baghdad
First pages:

Analysis, Design And Simulation Of Combined Fractal Dipole Antennas

Author name: مصطفى خالد طاهر
Supervisor name: Rifaat Talib Hussein
Specific topic: Communications Engineering
Degree: Master
Language: English
University location: Baghdad
First pages:

Design And Simulation Of Broadband Amplifiers For Satellite Applications

Author name: ضرغام اياد عبد الواحد
Supervisor name: علي عباس علي
Specific topic: Electronic Engineering
Degree: Master
Language: English
University location: Baghdad
First pages:

الغاء الضوضاء ودعم الصورة باستخدام تحويلات مختلفة == Image Denoising And Enhancement Using Hybrid Transform

Author name: مارتن حنا داود
Supervisor name: وليد امين محمود
Specific topic: Electronic Engineering
Degree: Master
Language: English
University location: Baghdad
First pages:

تحليل وتنفيذ شبكة حاسبات للجامعات اليمنية باستخدام تكنولوجيا النقل الغير المتزامن ATM == Analysis And Implementation Of ATM Computer Network For Yemen Universities

Author name: عبد العزيز صالح يسلم بن حبتور
Supervisor name: وليد امين محمود الجوهر
Specific topic: Electronic Engineering
Degree: Doctorate
Language: English
University location: Baghdad
First pages:

تنفيذ المرمز وفاتح الترميز لنظام الترميز المرن الهجين المتراص الملتف باستخدام مصفوفة البوابات المنطقية المبرمجة == FPGA Implementation Of Flexible Hybrid Concatenated Convolutional Codec

Author name: رغد زهير يوسف المقدسي
Supervisor name: وليد امين الجوهر | معتز شناسي عبد الوهاب
Specific topic: Communications Engineering
Degree: Doctorate
Language: English
University location: Baghdad
First pages:

نمذجة منظم الفولتية الاوتوماتيكي المبني بالمنطق المضبب لدراسات الاستقرارية العابرة == Fuzzy Logic - Based AVR Simulation For Steady - State Stability Enhacement

Author name: حيدر احمد حمد
Supervisor name: قيس متي الياس
Specific topic: Electrical Engineering
Degree: Master
Language: English
University location: Baghdad
First pages:

PMW Technique For Voltage Source Inverter Of Tree Phase AC Induction Motor

Author name: سيف ثامر فاضل
Supervisor name: Majeed Al-Khatat
Degree: Doctorate
Language: English
University location: Baghdad
First pages:

المستلم النفاث التكراري في الاتصالات المتنقلة == Iterative Turbo Receiver For Mobile Radio Communication

Author name: مهند اسماعيل الفراس
Supervisor name: صديق يوسف امين
Specific topic: Communications Engineering
Degree: Doctorate
Language: English
University location: Baghdad
First pages:

Implementation Of Geographic Information System (GIS) In Transient Stability Assessment

Author name: افانين انور الخزرجي
Supervisor name: Nihad M. Al-Rawi
Specific topic: Electrical Engineering
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
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