Gain enhancement of the Vivaldi antenna with band notch characteristics using zero-index metamaterial

被引：37
作者：
Bhaskar, Manoj [1 ]
Johari, Esha [1 ]
Akhter, Zubair [1 ]
Akhtar, M. J. [1 ]
机构：
[1] Indian Inst Technol, Dept Elect Engn, Kanpur 208016, Uttar Pradesh, India
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2016年 / 58卷 / 01期
关键词：
anisotropic zero index metamaterial; complementary split ring resonator; Vivaldi antenna;
D O I：
10.1002/mop.29534
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：
In this letter, a tapered slot ultrawide band (UWB) Vivaldi antenna with enhanced gain having band notch characteristics in the WLAN/WiMAX band is presented. In this framework, a reference tapered slot Vivaldi antenna is first designed for UWB operation that is, 3.1-10.6 GHz using the standard procedure. The band-notch operation at 4.8 GHz is achieved with the help of especially designed complementary split ring resonator (CSRR) cell placed near the excitation point of the antenna. Further, the gain of the designed antenna is enhanced substantially with the help of anisotropic zero index metamaterial (AZIM) cells, which are optimized and positioned on the substrate in a particular fashion. In order to check the novelty of the design procedure, three distinct Vivaldi structures are fabricated and tested. Experimental data show quite good agreement with the simulated results. As the proposed antenna can minimize the electromagnetic interference (EMI) caused by the IEEE 802.11 WLAN/WiMAX standards, it can be used more efficiently in the UWB frequency band. (c) 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:233-238, 2016
引用
收藏
页码：233 / 238
页数：6
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