Microwave metamaterial Absorber based on Jerusalem Cross with meandered load for bandwidth enhancement

• Published in: Optik (Stuttgart) 2017-07, Vol.140, p.515-522
• Main Authors: Naser-Moghadasi, Mohammad, Nia, Amir Zara, Toolabi, Mohammad, Heydari, Samaneh
• Format: Article
• Language: English
• Subjects: Absorber; Jerusalem Cross; metamaterial; microwave; reflection
• ISSN: 0030-4026; 1618-1336
• DOI: 10.1016/j.ijleo.2017.04.007

Microwave absorber is important devices that have been noticed in various applications such as microwave imagining and reflect array antenna. In this paper, we have developed a novel form of the JC metamaterial absorber for microwave application with dual band application at Ku band. We have shown that with meandered load, we have obtained wider bandwidth. The current distribution and capacitances are described that how the load is made a new resonance and made wider bandwidth. The symmetrical form of prototype structure is made polarization independence and for this absorber is checked for 0° to 60° incident wave angle. The Prototype MA is simulated with CST by time domain method with periodic boundary condition and it is fabricated on a FR-4 low cost substrate for dual band application and test in the chamber room. The loads are placed in symmetrical formation and made a uniform current distribution which is important for polarization independent. The parametric studies are noticed for each element and reveals that how the capacitance between load and JC are made and controlled the absorption.