Reduction of Surface Waves in Arrays using Uni-Planar EBG
Vara Prasad Kudumu1, Venkata Siva Prasad Mokkapati2

1K. Vara Prasad, Assistant Professor in VR Siddhartha Engineering College, Vijayawada, India.
2Dr. M V S Prasad, Professor in R V R & JC College of Engineering and Technology.

Manuscript received on 05 August 2019. | Revised Manuscript received on 09 August 2019. | Manuscript published on 30 September 2019. | PP: 8065-8069 | Volume-8 Issue-3 September 2019 | Retrieval Number: C6433098319/2019©BEIESP | DOI: 10.35940/ijrte.C6433.098319

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Abstract: Electromagnetic band gap (EBG) structures can be treated as sporadic arrangement of dielectrics. These structures will aid in the coupling reduction in arrays. In this paper, for reducing coupling between array antennas, a new arrangement of EBG structures is presented. The antenna resonates at 5.8GHz, used for wireless requirement. Here 5 × 2 EBG structures are used to reduce mutual coupling more than 20 dB. The antenna substrate dimensions are 36 mm × 68 mm × 1.6 mm. Also, the dispersion diagram was used to design EBG unit cell. In this, a uniplanar EBG configuration which is easy to fabricate without the use of vias is designed for antennas. Their use in coupling reduction of planar antennas and low-profile antenna applications is explored through an effective technique, because the information required is the dispersion diagram and reflection phase of the unit cell. Different Uniplanar-EBGs are used for optimizing current distribution on the antennas, decreasing the coupling between elements and harmonic suppression. As a result, the antenna array performance is improved and minimum coupling is less than -20 dB by using this EBG structure.
Index Terms— EBG, Patch Antennas, Mutual Coupling Reduction, Low Profile Antennas, Optimization, Dispersion Diagram.

Scope of the Article:
Discrete Optimization