1. Radiocommunications LaboratoryDepartment of PhysicsAristotle University of ThessalonikiThessalonikiGreece
2. Microwaves LaboratoryDepartment of Electrical and Computer EngineeringDemocritus University of ThraceXanthiGreece
3. Clermont UniversitéUniversité Blaise Pascal, Institut PascalClermont‐FerrandFrance
4. School of Sciences and Engineering, Department of EngineeringUniversity of NicosiaNicosiaCyprus