Design of a Bandwidth-enhanced Ultra Thin Metamaterial Absorber
This paper presents a low-profile(single layer)circular metamaterial(MTM)microwave absorber structure based on electric field driven LC(ELC)resonator.The structure is simulated in HFSS solver giving rise to almost unity absorption(99.92%)at 11.22 GHz(X-band).Further a 2×2 array using two different variants of the same resonating structure(different number of concentric rings)has been studied,which shows two discrete absorption peaks.When these peaks are brought closer by optimizing its dimensions,the structure exhibits a bandwidth of 0.86 GHz(11.74-12.60 GHz)above 70%absorbance with two absorbance peaks at 12 and 12.5 GHz(95%and 93%absorbance respectively)and with minimum absorbance at 12.3 GHz(72%absorbance).This proposed bandwidth-enhanced MTM absorber can be used in stealth technology for both X and Ku bands for the application of battlefield and air borne radar.The proposed structure also shows high(94%)absorbance for angular incidence up to 50°.
Saptarshi Ghosh Somak Bhattacharyya Kumar Vaibhav Srivastava
Department of Electrical Engineering,Indian Institute of Technology,Kanpur,India
国际会议
Progress in Electromagnetics Research Symposium 2013(2013年电磁学研究新进展学术研讨会)
台北
英文
1097-1101
2013-03-01（万方平台首次上网日期，不代表论文的发表时间）