Bandwidth Enhancement of CPW-Fed Antenna Based on Epsilon Negative Zeroth- and First-Order Resonators

被引：30

作者：

Niu, Bing-Jian ^{[1
]}

Feng, Quan-Yuan ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2013年 / 12卷

基金：

中国国家自然科学基金;

关键词：

Bandwidth enhancement; compact antenna; coplanar waveguide (CPW); epsilon negative transmission line (ENG-TL); high efficiency; ZOR ANTENNA; EFFICIENCY;

D O I：

10.1109/LAWP.2013.2280952

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 coplanar waveguide (CPW)-fed metamaterial (MTM) antenna using an epsilon negative transmission line (ENG-TL) is presented. The bandwidth characteristics of zeroth-order resonance (ZOR) and first-order resonance (FOR) are analyzed and described using circuit elements based on the ENG-TL theory. The bandwidth enhancement of the MTM antenna can be achieved by merging the two extended-bandwidth resonances. The CPW geometry adopted as the host TL offers design freedom to modulate the circuit elements. Based on the analysis, the wideband antenna is fabricated and tested. The measured results show that the fractional bandwidth is extended up to 70.5%, and radiation efficiencies of the ZOR and FOR are 84.75% and 86.7%, respectively. With wide bandwidth, high efficiency, and omnidirectional radiation, the proposed antenna is very suitable for wireless communication systems (GSM, UMTS, LTE, WLAN, WiMAX).

引用

页码：1125 / 1128

页数：4

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