Abstract

AbstractA left handed metamaterial antenna is designed in this paper. The unit cell is a combination of Double sided Coupled Split Ring Resonator (DSRR) and Capacitance Loaded Strips (CLS) in order to achieve a design that exhibits both negative magnetic permeability and negative electrical permittivity which has a capability of achieving negative refraction to strengthen the radiation power of the antenna. The antenna is designed using HFSS software and it is etched on a FR4 substrate having a thickness of 0.8 mm and the overall dimension of the antenna is 13 × 13 × 0.8 mm3.The antenna achieves LHM multiband frequency for a measured return loss whose center frequencies are 4.7 GHz, 7.6 GHz, 8.8 GHz, 10 GHz, 10.5 GHz and measured voltage standing wave ratio are 1.12 dB, 1.76 dB, 1.097 dB, 1.25 dB, 1.55db with a maximum gain and directivity of 2.1 dB and 2.9 dB respectively. The efficiency of the proposed antenna is 95% at the frequency of 8.8 GHz which is considerable higher. The proposed metamaterial antenna is better miniaturized, and has multiband frequencies which mainly find applications in various wireless communication systems such as WI-MAX, fixed mobile and satellite communication systems.

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