Informatics & Communication Engineering

Student Projects

Designing a Directional Coupler in Microstrip version (GSM) band

Submitted by Hassan Al-Hameed Al-Humer  Mohammad Zaitoneh Joelle Hanna Goumana Kassam

Project Supervisor Dr. Nawwaf Altaweel Eng. Said Arfi

Feb. 2015

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.

Autonomous Single- Track Vehicle

Submitted by Mohammad Al Shahadat Mahmoud Al Khatib Alaa Nablsi Mohammad Al Batarni

Project supervisors Dr.Samir Shreba Eng. Said Al Arfi

February 2015

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.

Simulation for Radio Directional Instrument (Beacon) Landing System

Submitted by Anas Hamsho Alaa Hamdi Rahaf Al Mulki  Mhd Sharif Hussain

Project supervisors  Dr. Nawaf Al Tawel Eng. Said Al Arfi

August 2014