شماره ركورد كنفرانس :
3926
عنوان مقاله :
Design of a Novel Ultra Broadband Single-Layer Absorber Using Double Fractal Square Loops
پديدآورندگان :
Basravi .M m.basravi@ec.iut.ac.ir Dept. of Electrical and Computer Engineering Isfahan University of Technology (IUT) Isfahan, Iran , Maddahali .M maddahali@cc.iut.ac.ir Dept. of Electrical and Computer Engineering Isfahan University of Technology (IUT) Isfahan, Iran , Firouzeh .Z. H zhfirouzeh@cc.iut.ac.ir Dept. of Electrical and Computer Engineering Isfahan University of Technology (IUT) Isfahan, Iran , Ramezani .A a.ramezani@ec.iut.ac.ir Dept. of Electrical and Computer Engineering Isfahan University of Technology (IUT) Isfahan, Iran
كليدواژه :
frequency selective surface (FSS) , ultra broadband absorber , equivalent circuit model , double fractal square loops (DFSL
عنوان كنفرانس :
بيست و چهارمين كنفرانس مهندسي برق ايران
چكيده فارسي :
In this paper, a new wideband single-layer lossy frequency selective surfaces (FSS) absorber using Double Fractal Square Loops (DFSL) array is proposed. A unit cell of the periodic structure for the absorber is designed and simulated. A simple equivalent circuit model is proposed that predicts the plane wave transmission characteristics for normal incidence. The absorber consists of a copper layer and some lumped resistors. Therefore, the fabrication of the proposed structure is easy and with no resistive sheets. The simulation results show that the fractional bandwidth of 133% is realized for at least 10dB reflectivity reduction illuminated by the normal incidence over the frequency range of 1.98-8.64 GHz.
