1. Department of Electronics EngineeringUniversity of Rome Tor Vergata Italy
2. TUBITAK Space Technologies Research Institute Ankara Turkey
3. Chair of RF EngineeringCommunication laboratory TU Dresden, Dresden Germany
4. UNAM‐Institute of Materials Science and NanotechnologyBilkent University Ankara Turkey
5. Department of Electrical and Electronics Engineering and also with the Communication and Spectrum Management Research Center (ISYAM)Bilkent University Ankara Turkey