Spectrum absorbency of metamaterial perfect absorber

• Main Authors: Md Ali, Siti Adlina, Abu, Maisarah, Zabri@Suhaimi, Siti Normi
• Format: Article
• Language: English
• Published: Penerbit UTHM 2022
• Online Access: http://eprints.utem.edu.my/id/eprint/26177/2/019.PDF; http://eprints.utem.edu.my/id/eprint/26177/; https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/9501/4889; https://doi.org/10.30880/ijie.2021.14.01.019
• Institution: Universiti Teknikal Malaysia Melaka

A triple-band metamaterial perfect absorber was introduced. The single and simple structure based on gold-bar shaped was designed on the 0.018λ Taconic TLY-5. The gold-bar shaped was designed horizontal initially was then being rotated anti-clockwise from0oto 90oto analyze and understand the change of absorption graph. Dual-band perfect metamaterial absorber was achieved at 45o. The fundamental and third harmonic magnetic resonances caused the low and high frequency peaks, respectively. Then, the gold-bar shaped was slotted at both end to create triple-band metamaterial perfect absorber. The slotted gold-bar shaped was evaluated in three absorption peaks: 99.94%, 99.88% and 99.66% at 3.98 GHz, 4.81 GHz and 5.33 GHz, respectively. This, however, moved to the 3.96 GHz, 4.80 GHz and 5.33 GHz with absorbency 99.79%, 99.95% and 99.90% for the measured structure. Both simulated and measure results were achieved absorbency over 99%, which was almost perfect absorption (≈100%). These properties are expected to beused in real-world applications such as satellite and radar communications transmission, particularly in lowering radar cross-section for stealth applications.