شماره ركورد كنفرانس :
4808
عنوان مقاله :
Multi-band High Impedance Surfaces Using Progressively Magnified EBG Structures
پديدآورندگان :
Vahimian Hossein hossein.vahimian@srbiau.ac.ir Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran , Naser-Moghaddasi Mohammad mn.moghaddasi@srbiau.ac.ir Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran , Amiri Nasrin n_amiri@azad.ac.ir Department of Electrical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
كليدواژه :
Electromagnetic Band Gap (EBG) , multi , band , High Impedance Surface (HIS) , Artificial Magnetic Conductor (AMC) , Progressive EBG
عنوان كنفرانس :
ششمين كنفرانس ملي رادار و سامانه هاي مراقبتي ايران
چكيده فارسي :
Electromagnetic Band Gap (EBG) structures are widely used in antenna engineering, low-RCS surfaces and electronic devices. In this paper, the effect of magnifying dimensions of an EBG structure on its Bandwidth (bandgap) is explored and multi-band High Impedance Surfaces (HIS) built by the magnified EBG structures are presented. The proposed structures are applicable to UWB antennas for improving radiation performance, as well as designing low-RCS surfaces. The main idea is to achieve a multi-band HIS by combining single-band EBG structures. The advantage of this combination is achieving multi-band surfaces, while it results in multi-band surfaces with narrower bandgaps compared with the bandgaps of unit cells which construct the combined surfaces. The disadvantage is due to the parasitic effects of combining EBG structures.
