Analysis of Wideband Antenna Performance over Dual Band Artificial Magnetic Conductor (AMC) Ground Plane

Abstract:

A Coplanar Waveguide (CPW) wideband antenna operates from 2.69 GH to 6.27 GHz which act as reference antenna (RA) has been designed. A Dual Band AMC (DBAMC) unit cells have been proposed to operate at 2.45 GHz and 5.8 GHz. AMC is a metamaterial which mimics the behavior of zero reflection phase of Perfect Magnetic Conductor (PMC) at resonance frequency which not naturally existed in nature. Subsequently the antenna is incorporated with AMC unit cell, herein referred as Antenna with Dual Band AMC (ADBAMC). The DBAMC succesfully excites additional resonance at 2.45 GHz outside the initial operating range of standalone CPW wideband antenna. Incorporation of DBAMC to antenna achieves back lobe suppression at 2.45 GHz and 5.8 GHz. The overall average gain of AMC incorporated antenna is improved from 2.69 to 6.29 GHz as opposed to the standalone reference CPW wideband antenna. Study of surface current is also presented and discussed.

• Periodical: Applied Mechanics and Materials (Volume 735)
• Pages: 273-277
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.735.273
• Online since: February 2015
• Authors: Raimi Dewan*, M.K.A. Rahim, Mohamad Rijal Hamid, M.F.M. Yusoff
• Keywords: Back Lobe Suppression, Dual Band AMC, Narrowband Resonance, Surface Current, Wideband Antenna

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