Design and analysis of metamaterial loaded microstrip slotted patch antenna for wireless applications

Abstract

The development in the presentation of novel microstrip slotted patch antenna geometry by the use of a circular SRR at the rear side of the ground is proposed. This improved performance has been achieved in the terms of significant addition of bands, better reflection coefficient and enhanced bandwidth and gain at the different resonant frequencies in the final stage design. The prototype has been built through the iterations of a novel geometry, introduction of slots in the second stage and finally the insertion of a split-ring resonator of circular shape at the rear side of the dielectric substrate in the third stage. Coaxial feeding technique has been employed to excite the structure at its fundamental frequency of operation. The slots embedded into the patch structure and the modified ground geometry not only scale the number of resonant frequencies, the corresponding gain and bandwidth but also provide for impedance matching at the different sideband frequencies of resonance. The anticipated prototype possibly will be used for radiolocation purpose at the design frequency of 2.73 GHz and also at the sideband frequencies of 9.11 and 9.32 GHz, fixed satellite at 4.47 and 8.81 GHz, mobile applications except aeronautical mobile at 5.67 and 7.81 GHz and for fixed mobile applications at 7.1 GHz. The final two design stages have been fabricated, and an untried verification has naked their performance to be in close approximation to the simulated ones.