The College of Electronic Engineering at the University of Ninevah / Department of Communication Engineering discussed, on Tuesday, 16/12/2025, the Master’s thesis of the student Israa Ammar Mohammed, entitled:
“Antenna Arrays Patterns Synthesis Using New Tapering Element Excitation Methods”
(Design of Antenna Array Patterns Using New Element Excitation Methods)
The thesis presented new methodologies for modifying traditional window functions used in linear antenna arrays, aiming to improve radiation characteristics and reduce the complexity of feed networks without affecting directivity.
The study relied on modifying a number of well-known window functions by introducing a central region with uniform amplitudes, while maintaining gradual tapering at the edges, thus achieving a more efficient and stable radiation pattern.
The results showed a noticeable improvement in the radiation characteristics of some modified windows, particularly Taylor, Dolph–Chebyshev, and Kaiser, with a reduction in sidelobe levels by approximately 5–6 dB and a decrease in feed network complexity. Other windows demonstrated stable performance while reducing network complexity by about 25%.
The thesis concluded that the proposed method represents an effective and simple approach to enhancing antenna array performance, serving modern communication and radar applications.
Part of the discussion was attended by the Dean of the College of Electronic Engineering, Professor Dr. Khalid Khalil Mohammed.
The examination committee consisted of:
• Prof. Dr. Khalil Hassan Sayed Mar’i – Chair
• Asst. Prof. Dr. Ahmed Mohammed Ahmed – Member
• Lect. Dr. Adham Ma’an Saleh – Member
• Prof. Dr. Jaafar Ramadan Mohammed – Member and Supervisor
At the conclusion of the discussion, the College extended its best wishes to the student and the examination committee for continued success and achievement.
