Submitted by Anas Hamsho Alaa Hamdi Rahaf Al Mulki Mhd Sharif Hussain
Project supervisors Dr. Nawaf Al Tawel Eng. Said Al Arfi
Submitted by Hassan Al-Hameed Al-Humer Mohammad Zaitoneh Joelle Hanna Goumana Kassam
Project Supervisor Dr. Nawwaf Altaweel Eng. Said Arfi
ABSTRACT:Branch-Line Microstrip Coupler is one of the fundamental components in RF/Microwave systems. It is a 4-Port device that divides and/or combiner power simultaneously. These features make the coupler extremely useful in various applications (GSM-Band), such as antenna feeding network, phase shifter, balance amplifier and mixer. In this project theoretical study was carried out on the characteristic of Microstrip Directional Couplers included, Isolation, Coupling, through and Directivity, which are important quantities for characterization of couplers. The AWR Program was used to establish the design of the Microstrip Coupler Circuit using element browser. Measurements S-Parameters of Microstrip Coupler Circuit were conducted and Spectrum Analyzer was used for this purpose. Although Spectrum Analyzer was used for measurements Transmission Coefficients, Coupling, Isolation, Directivity and Reflection Coefficients. Measurement errors due to tracking frequency response and mismatching in this conducted project were considered.
Submitted by Mohammad Al Shahadat Mahmoud Al Khatib Alaa Nablsi Mohammad Al Batarni
Project supervisors Dr.Samir Shreba Eng. Said Al Arfi
ABSTRACT :The purpose of this project is to design a vehicle that is able to encounter gravity forces that will lead it into an unbalanced state , this vehicle will be stable in all statues (standing still or in motion ) using an opposite force to encounter any tilting angle which is produced by the control momentum gyroscope. Angular momentum will be generated by a DC motor that rotates a disk in one speed. The second task in this project was to control the motion of the vehicle in many speeds by using a micro-controller to use the PWM technique and generate a binary signal for better speed control of the vehicle. A motor driver to control the direction of rotation of the movement motor to drive the vehicle forward or backward. Third task was to control the vehicle wirelessly, a Bluetooth circuit connected to micro- controller to change the speed and enable the vehicle to go forward and backward, and this done by using mobile application.
Submitted by Mohamad Bahjat Kerdali Somar Zohrab Nalbandina Mohamad Ali Arbash Ola Ali Alaydi
Project Supervisor Dr. Nawaf Altaweel Eng. Said Al Arfi
ABSTRACT :Phase shifters are four-port microwave devices which take an input signal and output in phase and shifted phase version of the original signal. These devices can be used in phased antenna arrays, balanced mixer, and Amplifier. The goal of this work is to construct a hybrid coupler phase shifter which will provide a 90 degree phase shift to a signal with a center frequency of 2 GHz over a 200 MHz bandwidth.
What made this project exceptional is the hybrid coupler phase shifter has not been extensively studied. Some papers have provided rough guidelines for constructing these shifters, but there is little exploration of performance.
This work uses AWR as a simulation tool to provide design analysis, and experimental work was performed in the RF laboratory at the Arab International University “AIU
Submitted by Hanan Abu Quaider Fares AlSet Mohammad Ghammazeh Ahmad Zein Ela’abdeen Mohammad Ali Sahtout
Project Supervisors Acc. Prof. Dr. Hanna Jarmoukly Vice Dean for Scientific Affairs MSc. Eng. Tarek Sati
ABSTRACT: The purpose of this project is to develop and implement an application that simulates an FM System using C# Programming Language. The application works as a visual aid, and gives the ability to generate three types of input signals with ability to control their parameters (Frequency and Amplitude). The application can also generate a carrier signal ranged at the FM standard band of frequencies (88 to 108 MHz). The main task of the application arises when frequency modulate the carrier signal with respect to the message signal which is already generated (three types). Then, the modulated signal is transmitted over a channel and affected by channel noise–where the user can vary its parameters-.Detecting and recovering the message signal at the receiver end is also a possible process in the application. All the generated signals and the modifications applied to them are displayed on dedicated windows.