Acta Metallurgica Sinica(English letters) ›› 2015, Vol. 22 ›› Issue (5): 41-44.doi: 10.1016/S1005-8885(15)60678-1

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Ultra-broadband Metamaterial Absorber using slotted metal loops with multi-layers and its anti-reflection analysis


  1. School of Telecommunication Engineering, Communication University of China, Beijing 100024, China
  • Received:2015-04-08 Revised:2015-05-29 Online:2015-10-30 Published:2015-10-30
  • Contact: Ze Yu
  • Supported by:
    This work was supported by the doctoral program foundation of Beijing (20120018110003).

Abstract: An ultra-thin and broadband absorber which consists of periodic rings with gaps is proposed in this paper. The periodic rings are printed on the middle metallic layers in a four-layer substrate of total thickness is only 3.4 mm. Simulation results, which are gotten by using finite element method (FEM) and finite-difference time-domain (FDTD), show that the absorption is higher than 90% cover the frequencies range from 7.8 GHz to 22.2 GHz. The measurement results of the absorption agree with simulated ones very well. We also discuss the working mechanism according to the anti-reflection theory in the paper.

Key words: metamaterial, broadband, anti-reflection, periodicstructure, absorption

CLC Number: