Abstract
The principle purpose of this study was to produce a horizontally inverse double L-shaped metamaterial that was applicable for triple-band applications and that exhibited negative permittivity and permeability in the resonance frequencies. The horizontally inverse double L-shaped structure had a square split ring resonator on the outer side that was etched on a Rogers RT5880 dielectric substrate material. The size of the unit cell was 10 x 10 mm(2). The CST Microwave Studio electromagnetic simulator was utilized for the design and analysis of the proposed metamaterial. Analyses and comparisons were performed with different configurations, such as the use of different substrates, varying the width of the splits, and the use of different array arrangements. All the arrangements confirmed that triple-band operation frequency lay in the C-, X-, and K-u-bands. The double negative and negative refractive index regions as seen in the unit cell results and the array results harmonized between 6-7.632 GHz, 7.932-8.388 GHz, 9.204-9.804 GHz, 10.284-13.356 GHz, 13.716-16.632 GHz, 16.872-17.136 GHz, 17.52-17.652 GHz and 10.692-12.828 GHz, 13.02-13.5 GHz, 14.928-18 GHz, respectively. The scattering parameters dimensions of the introduced horizontally inverse double L-structured metamaterial is favorable for different applications associated with C-, X-, and K-u-bands such as long-distance, military, and satellite communications.