Triangular Based Dual-band Metamaterial Absorber for C-band Applications

Abstract

This paper presents a dual band metamaterial absorber based on triangular resonator for C-band applications. Metamaterial absorbers finds applications in sensing devices such as thermal and explosive detection and sound absorption. The unit cell has compact electrical size of (0.196 x 0.196) where  is the wavelength at resonance frequency of 4.9 GHz. The circular slot etched on the triangular resonator accounts for the lower frequency at 4.9 GHz and the post placed besides the resonator account for upper frequency at 7.5 GHz. The propose absorber is simulated using CST® software. The electromagnetic constitutive parameters of the unit cell are retrieved to reveal its left handedness. An absorptances values of 99% and 78% were obtain at the resonance frequencies of 4.9 GHz and 7.5 GHz respectively.  The absorber is polarization insensitive due to constant coefficient of absorption when E and H field are rotated for an oblique incident angle for θ at 0°, 20°, 40° 60° and 80°.

This paper presents a dual band metamaterial absorber based on triangular resonator for C-band applications. Metamaterial absorbers finds applications in sensing devices such as thermal and explosive detection and sound absorption. The unit cell has compact el

This paper presents a dual band metamaterial absorber based on triangular resonator for C-band applications. Metamaterial absorbers finds applications in sensing devices such as thermal and explosive detection and sound absorption. The unit cell has compact electrical size of (0.196 x 0.196) where  is the wavelength at resonance frequency of 4.9 GHz. The circular slot etched on the triangular resonator accounts for the lower frequency at 4.9 GHz and the post placed besides the resonator account for upper frequency at 7.5 GHz. The propose absorber is simulated using CST® software. The electromagnetic constitutive parameters of the unit cell are retrieved to reveal its left handedness. An absorptances values of 99% and 78% were obtain at the resonance frequencies of 4.9 GHz and 7.5 GHz respectively.  The absorber is polarization insensitive due to constant coefficient of absorption when E and H field are rotated for an oblique incident angle for θ at 0°, 20°, 40° 60° and 80°.

ectrical size of (0.196 x 0.196) where  is the wavelength at resonance frequency of 4.9 GHz. The circular slot etched on the triangular resonator accounts for the lower frequency at 4.9 GHz and the post placed besides the resonator account for upper frequency at 7.5 GHz. The propose absorber is simulated using CST® software. The electromagnetic constitutive parameters of the unit cell are retrieved to reveal its left handedness. An absorptances values of 99% and 78% were obtain at the resonance frequencies of 4.9 GHz and 7.5 GHz respectively.  The absorber is polarization insensitive due to constant coefficient of absorption when E and H field are rotated for an oblique incident angle for θ at 0°, 20°, 40° 60° and 80°.