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Materials 2013, 6(8), 3226-3240; doi:10.3390/ma6083226

A New Metasurface Superstrate Structure for Antenna Performance Enhancement

1
Institute of Space Science (ANGKASA), Universiti Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia
2
Department of Electrical, Electronic and System Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia
*
Author to whom correspondence should be addressed.
Received: 24 June 2013 / Revised: 12 July 2013 / Accepted: 24 July 2013 / Published: 31 July 2013
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Abstract

A new metasurface superstrate structure (MSS)-loaded dual band microstrip line-fed small patch antenna is presented in this paper. The proposed antenna was designed on a ceramic-filled bioplastic sandwich substrate with a high dielectric constant. The proposed 7 × 6 element, square-shaped, single-sided MSS significantly improved the bandwidth and gain of the proposed antenna. The proposed MSS incorporated a slotted patch antenna that effectively increased the measured operating bandwidth from 13.3% to 18.8% and from 14.8% to 23.2% in the lower and upper bands, respectively. Moreover, the average gain of the proposed MSS-based antenna was enhanced from 2.12 dBi to 3.02 dBi in the lower band and from 4.10 dBi to 5.28 dBi in the upper band compared to the patch antenna alone. In addition to the bandwidth and gain improvements, more directive radiation characteristics were also observed from the MSS antenna compared to the patch itself. The effects of the MSS elements and the ground plane length on the reflection coefficient of the antenna were analyzed and optimized. The overall performance makes the proposed antenna appropriate for RFID and WLAN applications. View Full-Text
Keywords: metasurface superstrate (MSS); ceramic filled bioplastic; dual band patch antenna; bandwidth and gain enhancement metasurface superstrate (MSS); ceramic filled bioplastic; dual band patch antenna; bandwidth and gain enhancement
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Islam, M.T.; Ullah, M.H.; Singh, M.J.; Faruque, M.R.I. A New Metasurface Superstrate Structure for Antenna Performance Enhancement. Materials 2013, 6, 3226-3240.

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