1. Ain Shams University,Electronics & Electrical Comm Engineering Department,Cairo,Egypt
2. RF Circuits and SystemsGroup Military Technical College,Radar Department,Cairo,Egypt
3. Edinburgh Napier University,School of Engineering and the Built Environment,Edinburgh,UK
4. Alexandria University,Air Defence College,Dept. of Electronics & Comm,Alexandria,Egypt
5. University of Bradford,Department of Biomedical and Elecronics Engineering,Bradford,England