Microwave

Quantum mechanics

Multi band

Materials science

Absorption (acoustics)

Telecommunications

Metamaterial

Computer science

Antenna (radio)

Split-ring resonator

Multi-band device

Ku band

Tunable metamaterials

Physical chemistry

Polarization (electrochemistry)

Physics

Metamaterial absorber

Dielectric

Optics

Resonator

Chemistry

X band

Optoelectronics

Permittivity

Sensors

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.

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