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Metamaterial-based frequency reconfigurable antenna

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3 Author(s)
H. Cheribi ; (Ecole Militaire Polytechnique (EMP), Electronics Engineering, Algeria ; F. Ghanem ; H. Kimouche

A frequency reconfigurable antenna based on metamaterial is presented. It is composed of a coplanar-fed straight-line monopole with two double split-ring resonators (DSRRs) of different size disposed at its proximity. Each cell exhibits a negative permeability over a frequency band, which produces magnetic couplings with the monopole that starts to radiate at new bands; the whole structure is now a tri-band antenna. The frequencies over which the two DSRRs exhibit a negative permeability have been arbitrarily chosen to show that the proposed approach can be used to create new operating bands and also to introduce notches. By using a single switch at each metamaterial cell, their effect can be deactivated and the corresponding resonance can be suppressed, resulting in a frequency reconfigurable antenna. Simulated and measured results are presented and good agreement is achieved.

Published in:

Electronics Letters  (Volume:49 ,  Issue: 5 )