Radiation enhanced vivaldi antenna with shaped dielectric cover

被引：14
作者：
Li, Xiang-Xiang [1 ,2 ]
Lu, Bao-Jun [1 ,2 ]
Sang, Lei [1 ,2 ]
Zhang, Yan-Mei [3 ]
Lv, Guo-Qiang [1 ,2 ]
机构：
[1] Hefei Univ Technol, Hefei, Peoples R China
[2] Hefei Univ Technol, Hefei 230009, Anhui, Peoples R China
[3] Beijing Inst Technol, Radar Res Lab, Beijing 100081, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2017年 / 59卷 / 08期
基金：
中国国家自然科学基金;
关键词：
dielectric cover; gain enhancement; high gain; tapered slot antenna; Vivaldi antenna; TAPERED SLOT ANTENNA; GAIN ENHANCEMENT; DESIGN;
D O I：
10.1002/mop.30656
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：
Gain curve of the conventional Vivaldi antenna (CVA) decreases at higher frequencies. A dielectric cover is proposed to correct this problem. The detailed analysis, design and discussion for the CVA with shaped dielectrics (SDCVA) have been carried out. Both the CVA and the DSCVA are fabricated and tested. The results show good agreement with the simulated ones. The measured results show that the proposed SDCVA provides a gain variation of 5.2-14.2 dBi in the wide operating range from 3.5 to 16.5 GHz, which corresponds to a gain enhancement of 0.5-6.5 dBi compared to the CVA. In addition, the E-plane half power beamwidths are narrowed significantly at higher frequencies. An average improvement of 3.58 dB is achieved in terms of the front-to-back ratio. The sidelobe levels, on average, are reduced by 5.88 dB and 3.47 dB for E-plane and H-plane, respectively.
引用
收藏
页码：1975 / 1983
页数：9
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