A Back Lobe Reduction of Aperture Coupled Microstrip Antenna Using DGS

被引：0
|
作者：
Alias, H. [1 ]
Ali, M. T. [1 ]
Subahir, S. [1 ]
Ramli, N. [1 ]
Sulaiman, M. A. [1 ]
Kayat, S. [1 ]
机构：
[1] Univ Teknol MARA, Fac Elect Eng FKE, Microwave Technol Ctr, Antenna Res Grp, Shah Alam, Selangor, Malaysia
来源：
2013 10TH INTERNATIONAL CONFERENCE ON ELECTRICAL ENGINEERING/ELECTRONICS, COMPUTER, TELECOMMUNICATIONS AND INFORMATION TECHNOLOGY (ECTI-CON) | 2013年
关键词：
antenna; patch; aperture coupler; DGS; planar array; CST Microwave Studio;
D O I：
暂无
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
This paper presents a novel design of aperture coupled microstrip antenna with back lobe reduction. The proposed design was based on the structure of a 2 by 2 planar array antenna with separated feeding technique, aperture coupler. The antenna is designed on Rogers Duroid substrate having dielectric, e, of 2.2. Four dumbbell shaped DGS were etched on the ground plane for back radiation reduction. An antenna without DGS is first designed acting as reference. Both of the designs were simulated in CST Microwave Studio 2011 software based on operating frequency of 5.8GHz. A parametric study was done to investigate the effect of DGS dimensions. The results show that, by incorporating DGS onto the antenna, back radiation is reduced. The back lobe level is reduced from 4.6dB to 0.4887dB. Return loss were also improved from -26.089dB to -41.28dB. This design concept can be useful in reducing the back radiation of aperture coupled microstrip antenna.
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页数：5
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