A Compact Low Profile Modified ACS-fed Triple Band Open-Ended Metamaterial Antenna for UMTS, WLAN, and WiMAX Applications

Abstract

A new, compact and low profile triple band metamaterial (MTM) antenna based on the open-ended configuration of composite right/left-handed (CRLH) transmission line (TL) is discussed in this paper. The intended antenna obtains a compact size $( ka = 0.8 \lt 1)$ due to its zeroth order resonance (ZOR) property with an overall electrical dimension of $0.16 \lambda _{0} \times 0.19 \lambda _{0}\, \times 0.004 \lambda _{0}$ at 2.16 GHz and an overall antenna dimensions of $23 \times 27 \times 0.6$ mm3. The antenna covers three resonances from (2.14–2.18 GHz), (3.14–3.65 GHz), and (4.59–7.34 GHz) frequency bands with -10 dB S 11 bandwidths of 1.85%, 15.22%, and 49.10% for the three frequency bands. The intended MTM antenna provides an average gain of 2 dBi, 1.2 dBi, and 4 dBi respectively for the three resonances. Measured S 11 shows almost similar result with the simulated result demonstrates that the intended triple band MTM antenna is appropriate for working in the 2.2 GHz UMTS, 3.6/5.2/5.8 GHz WLAN, and 3.3/3.5/5.5 GHz WiMAX applications.