A Polarization Independent Quasi-TEM Metamaterial Absorber for X and Ku Band Sensing Applications

• Published in: Sensors (Basel, Switzerland) Vol. 18; no. 12; p. 4209
• Main Authors: Hoque, Ahasanul, Tariqul Islam, Mohammad, Almutairi, Ali F, Alam, Touhidul, Jit Singh, Mandeep, Amin, Nowshad
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI 30.11.2018; MDPI AG
• Subjects: absorber; dual-band; metamaterial; quasi-TEM; sensing; X band; sensing; absorber; dual-band; metamaterial; X band; quasi-TEM
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s18124209

In this paper, a dual-band metamaterial absorber (MMA) ring with a mirror reflexed C-shape is introduced for X and Ku band sensing applications. The proposed metamaterial consists of two square ring resonators and a mirror reflexed C-shape, which reveals two distinctive absorption bands in the electromagnetic wave spectrum. The mechanism of the two-band absorber particularly demonstrates two resonance frequencies and absorption was analyzed using a quasi-TEM field distribution. The absorption can be tunable by changing the size of the metallic ring in the frequency spectrum. Design and analysis of the proposed meta-absorber was performed using the finite-integration technique (FIT)-based CST microwave studio simulation software. Two specific absorption peaks value of 99.6% and 99.14% are achieved at 13.78 GHz and 15.3 GHz, respectively. The absorption results have been measured and compared with computational results. The proposed dual-band absorber has potential applications in sensing techniques for satellite communication and radar systems.