Affiliation: | 1. Department of Electrical and Information Engineering, Politecnico di Bari, via E. Orabona 4-70125 Bari, Italy;2. The Antenna Company Nederland B.V., Grebbeweg 111, 3911 AV Rhenen, The Netherlands;3. Department of Information Engineering, Electronics and Telecommunications “Sapienza” University of Rome; Via Eudossiana, 18-00184 Rome, Italy;1. Department of Physics, Manipal Institute of Technology, Manipal University, Manipal 576 104, India;2. Department of Physics, Mangalore University, Mangalagangotri 574 199, India;3. Department of Physics, Karnatak University, Dharwad 580 003, India;4. Department of Physics, K.V.G College of Engineering, Kurunjibhag, Sullia 574 327, India;5. Microtron Centre, Mangalore University, Mangalagangotri 574 199, India;1. Laboratory of Multifunctional Materials and Applications (LaMMA), (LR16ES18), Faculty of Sciences of Sfax, University of Sfax, B.P. 1171, Sfax 3000, Tunisia;2. Laboratory of Physics of Condensed Matter (LPMC), University of Picardie Jules Verne, Scientific Pole, 33 rue Saint-Leu, 80039 Amiens Cedex 1, France |