Tunable dual-band metamaterial using open stub-loaded stepped-impedance resonator

• Main Authors: Alhawari, Adam Reda Hasan, Ismail, Alyani, Mahdi, Mohd Adzir, Raja Abdullah, Raja Syamsul Azmir
• Format: Conference or Workshop Item
• Language: English
• Published: IEEE 2011
• Online Access: http://psasir.upm.edu.my/id/eprint/40942/1/Tunable%20dual-band%20metamaterial%20using%20open%20stub-loaded%20stepped-impedance%20resonator.pdf; http://psasir.upm.edu.my/id/eprint/40942/

In this paper, we report a tunable planar metamaterial that is designed to achieve dual-band negative refractive index response in microwave regime. Its distinctive characteristic is the usage of tuning open stub-loaded stepped-impedance resonators. The frequency tunability of the second band is achievable via the adjustable open stub-loaded at the fixed tune of the first band. Parameter retrieval algorithm and full-wave simulation of prism-shaped structure were carried out to validate the negative refraction characteristics of metamaterial structure. The results predict its prospect as a very promising alternative to the conventional ones, which is compatibly applicable on various potential microwave devices especially when a dual-band function is required. In addition to that, its design flexibility offers various frequency bands at any possible choice, which alterable with the design parameters.