BANDWIDTH ENHANCEMENT METAMATERIAL ANTENNA BASED ON TRANSMISSION LINE APPROACH

被引：11
作者：
Bala, B. D. [1 ]
Rahim, M. K. A. [1 ]
Murad, N. A. [1 ]
机构：
[1] Univ Teknol Malaysia, Dept Commun Engn, UTM MIMOS Ctr Excellence, Fac Elect Engn, Skudai 81310, Johor, Malaysia
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2015年 / 57卷 / 01期
关键词：
CRLH-TL; wideband; zeroth-order resonance; positive-order resonance; metamaterial; RESONANT ANTENNAS; BROAD-BAND;
D O I：
10.1002/mop.28821
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A composite right-/left-handed transmission line metamaterial antenna with enhanced bandwidth and efficiency is proposed. The antenna combines zeroth-order resonant (ZOR) and positive-order resonant (POR) modes for the bandwidth enhancement. An asymmetrical coplanar waveguide technique is used to feed the antenna and also to achieve certain degree of compactness. The overall size of the antenna is 0.32(0)x 0.38(0) x 0.012(0) (40 x 48 x 1.52 mm) at 2.4 GHz. Simulation results show that a bandwidth enhancement of 41% is obtained with the radiation efficiencies of 95 and 97% for the ZOR and POR modes, respectively. The measured impedance bandwidth shows that the antenna has potential applications for WLAN (2.39-2.45 GHz) and WiMAX (2.5-2.69 GHz) operations. The simulated and measured antenna performances in terms of return loss and the radiation patterns are presented and compared. (c) 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:252-256, 2015
引用
收藏
页码：252 / 256
页数：5
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