A Compact Circularly Polarized Multiband Microstrip Patch Antenna with Defective Ground Structure

被引：3
|
作者：
Singh, Ashish Kumar [1 ]
Sharma, Ankit [1 ]
Lakshmanan, M. [1 ]
Gangwar, Deepak [2 ]
机构：
[1] Galgotias Coll Engn & Technol, Dept Elect & Commun, Greater Noida, India
[2] Bharati Vidyapeeths Coll Engn, Dept Elect & Commun, New Delhi, India
来源：
INTERNATIONAL JOURNAL OF ELECTRONICS AND TELECOMMUNICATIONS | 2019年 / 65卷 / 02期
关键词：
Multiband; circularly polarized and defective ground structure (DGS); axial ratio; PRINTED ANTENNA; BAND; SLOT;
D O I：
10.24425/ijet.2019.126301
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this paper, a novel double-layer multiband circularly polarized microstrip patch antenna is proposed. The design employs the concept of slotted patch fed with proximity coupled feed having defected ground plane (DGS). The proposed antenna achieves multiple operating frequency bands including FB1 (11.15 GHz), FB2 (4.17 GHz), FB3 (4.87 GHz) and FB4 (1.98 GHz). The proposed antenna has obtained bandwidth of 12.98%, 4.7%, 4.69% and 5.39% at FB1, FB2, FB3 and FB4 bands, respectively. The proposed antenna also exhibits circular polarization in the frequency band FB4. The 3dB ARBW of the antenna is 9.23% at 11.2 GHz. Finally, a metallic cavity is used with the antenna to achieve a unidirectional radiation pattern. The designed antenna radiation characteristics are verified with the experimental results.
引用
收藏
页码：195 / 201
页数：7
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