Title

Ultrathin metamaterial microwave absorber using coconut coir fibre over x-band frequency range

RIS ID

136564

Publication Details

Yah, N. F. N., Rahim, H. A., Abdulmalek, M., Lee, Y. S., Yahaya, N. Z., Jusoh, M., Abbasi, Q. H. & Mirza, S. 2019, 'Ultrathin metamaterial microwave absorber using coconut coir fibre over x-band frequency range', 2019 International Conference on Communications, Signal Processing, and their Applications (ICCSPA), IEEE, United States, pp. 1-5.

Abstract

This paper presents the new design of simple one layer ultrathin metamaterial microwave absorber using coconut coir fibre as the substrate. The metamaterial microwave absorber is composed of a periodic array of square loops and patches with circle cut out printed on a dielectric material which is coconut coir fibre backed by PEC. CST Microwave Studio software is used for the design and simulation over frequency range of X-Band and Ku-Band (8.2-18 GHz). From the simulation result, 90% absorption was achieved in the frequency range of 8.94 - 10.0 GHz (X-Band) with highest absorption of 99.7% at 9.37 GHz. Furthermore, the metamaterial microwave absorber has a total thickness of 1.6 mm which is only approximately 0.04λ at lowest frequency. The result shows that coconut coir fibre from the agricultural waste has a great potential to be developed further in electromagnetic wave applications particularly microwave absorber.

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Link to publisher version (DOI)

http://dx.doi.org/10.1109/ICCSPA.2019.8713715