UWB Antipodal Vivaldi antenna with higher radiation performances using metamaterials

被引：13
|
作者：
Boujemaa, Mohamed-Ali [1 ]
Herzi, Rabiaa [2 ]
Choubani, Fethi [1 ]
Gharsallah, Ali [2 ]
机构：
[1] Univ Carthage, InnovCOM Res Lab Supcom, Tunis, Tunisia
[2] CSEHF Fac Sci Tunis, El Manar 2092 1, Tunisia
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2018年 / 124卷 / 10期
关键词：
D O I：
10.1007/s00339-018-2132-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, an Ultra-Wide-Band (UWB) Antipodal Vivaldi antenna with higher radiation performances is proposed. Zero-index metamaterials units with Meander-line shape are placed on the antenna aperture to improve the antenna directivity. An increase of 4 dB in the gain with equal beamwidths in the E and H planes is achieved at different frequencies. The antenna covers 142.8% bandwidth with input match better than -10 dB from 1.3GHz to 12GHz. It has practically unchanged radiation patterns over the operating bandwidth where the gain varies from 9.5 dB at 5GHz-12.4dB at 10GHz. Measurement results show satisfactory agreement with simulation. Therefore, loading with metamaterials makes the VIVALDI antenna directivity frequency independent. This UWB antenna is eventually a good candidate for wireless communications and radar applications.
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收藏
页数：7
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