College of Engineering

Abstract : The different available techniques for MOSFET-C integrated filters implementation are investigated in this thesis. These techniques are reviewed and compared from different points of view and the most promising approach is identified. Some well-known second-order bandpass filter circuits are converted from active-RC form to MOSFET-C form using Balanced-Amplifier Technique. Their linear performances are evaluated analytically and computer-simulated using the simulation program PSPICE and ORCAD.

Abstract : Orthogonal Frequency Division Multiplexing (OFDM) has been employed as an attractive solution for wireless communication, because of the digital implementation of OFDM in which subcarrier generation and data modulation are accomplished digitally using orthogonal transformation such as Fast Fourier Transform (FFT) of data block. This technique is considered as a building block of the suggested spread spectrum scheme.

Abstract : This work deals with developing suitable attitude control algorithm for a small low Earth orbit satellite of minimum cost and complexity. The proposed attitude control system deals with a combination of passive and active control methods. Passive control is represented by boom deployment to ensure Earth pointing with accuracy (of _ 50 ). Active control method is accomplished by the use of a set of mutually perpendicular coils called magnetorquer mounted on the principal axes of the spacecraft.