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J. Electromagn. Eng. Sci > Volume 15(2); 2015 > Article
Journal of Electromagnetic Engineering and Science 2015;15(2):120-122.
DOI: https://doi.org/10.5515/JKIEES.2015.15.2.120   
Effect of Loading Split-Ring Resonators in a Microstrip Antenna Ground Plane
Hong-Min Lee
Department of Electronic Engineering, Kyonggi University
Abstract
This study presents a new, simple method for improving the front-to-back (F/B) ratio of a microstrip patch antenna (MSA) based on surface wave suppression. The back radiation of the MSA is significantly reduced by using the meandered ground plane edges and placing split-ring resonators (SRRs) in the middle of the meandered slots. By loading SRRs near the center of the meandered ground plane edges, some parts of the diffracted back-lobe power density can be reduced further. Compared to the F/B ratio of a conventional MSA with a full ground plane of the same size, an improved F/B ratio of 18 dB has been achieved experimentally for our proposed MSA.
Key words: Front-to-Back Ratio, Microstrip Patch Antenna, Removed Ground Plane, Split-Ring Resonator (SRR), Surface Wave
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