9-Metamaterial absorber based on circular ring structure with and without copper lines
Osman Ayop, Mohamad Kamal A. Rahim, Noor Asniza Murad, and Huda A. Majid, “Metamaterial absorber based on circular ring structure with and without copper lines,” META’14, the 5th International Conference on Metamaterials, Photonic Crystals, and Plasmonics, NTU Singapore, 20-23 May. 2014.
Abstract:
This report presents a study of circular ring metamaterial absorber with the existing of copper lines. The structure is designed using lossy FR4 substrate with thin copper layers. The circular ring shape with copper lines is printed on the top surface of FR4 substrate while at the bottom surface is printed with full copper ground plane. Parametric study is done to investigate the effect of copper lines on the resonance frequency. From the simulation, the circular ring metamaterial absorber with vertical copper lines can resonates at lower frequency but this structure is polarization sensitive. This drawback can be improved by adding horizontal copper lines simultaneously with the vertical copper lines.