1. University of Houston,Department of Electrical and Computer Engineering,Houston,TX,USA,77204
2. Edinburgh Napier University,School of Computing, Engineering and the Built Environment,Edinburgh,UK
3. Alexandria University,Air Defense College,Electronics Department of Electronics and Communication,Alexandria,Egypt
4. Electronics Research Institute,Microstrip Department,Cairo,Egypt
5. Canadian International College (CIC),Faculty of Engineering,Department of Communication,Cairo,Egypt