Title :
Fractal two-dimensional electromagnetic band-gap structures
Author :
Frezza, F. ; Pajewski, L. ; Schettini, G.
Author_Institution :
Dept. of Electron. Eng., Univ. of Rome, Roma, Italy
Abstract :
Fractal two-dimensional Electromagnetic Band-Gap (EBG) materials are proposed and studied by means of a full-wave method developed for diffraction gratings. Such a technique allows us to characterize, in a rapidly convergent way, the transmission and reflection properties of periodic fractal structures with an arbitrary geometry in the unit cell. Both polarization cases can be treated. In particular, two different fractal EBG materials are considered. Numerical results are reported for the transmission efficiency as a function of the frequency. Typical effects due to the fractal geometry are observed, like multi-band behavior and enlargement of stop-bands.
Keywords :
electromagnetic wave reflection; electromagnetic wave transmission; fractals; frequency response; microwave materials; periodic structures; dielectric rods; electromagnetic band-gap structures; fractal 2D EBG structures; fractal EBG materials; fractal geometry; full-wave method; multi-band behavior; periodic fractal structures; reflection properties; stop-band enlargement; transmission efficiency; transmission properties; two-dimensional EBG structures; Dielectric materials; Fractals; Frequency; Geometry; Metamaterials; Microstrip; Optical resonators; Optical scattering; Optical waveguides; Periodic structures;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1212497
