A wideband circularly polarized S-shaped slot antenna

被引：8
作者：
He, Wei [1 ]
He, Yejun [1 ]
Wong, Sai-Wai [1 ]
Liao, Chao-Hsiang [2 ]
机构：
[1] Shenzhen Univ, Coll Elect & Informat Engn, Shenzhen 518060, Peoples R China
[2] Lunghwa Univ Sci & Technol, Dept Elect Engn, Taoyuan, Taiwan
来源：
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING | 2021年 / 31卷 / 05期
基金：
中国国家自然科学基金;
关键词：
circularly polarized antenna; slot antenna; wideband antenna;
D O I：
10.1002/mmce.22612
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
This article introduces a simple wideband circularly polarized (CP) S-shaped slot antenna for ISM band wireless communication applications. By using a wide curve S-shaped slot patch on the top side and a T-shaped feeding line on the bottom side of the substrate, the wideband CP wave is generated. The overall size of the proposed antenna is 0.85 lambda x 0.85 lambda x 0.011 lambda (lambda is the wavelength of the lowest operating frequency) and it has a broad impedance bandwidth of 68.1% between 1.66 and 3.44 GHz for S-11 < -10 dB and a 3 dB axial-ratio bandwidth of 57.1% between 1.68 and 3.06 GHz. Within the axial-ratio bandwidth, the measured gain of the proposed antenna ranged from 2.1 to 5.4 dBic. The measured results are in good agreement with simulated results. The new type of slot antenna with wide bandwidth and simple structure is a good candidate for various RFID applications.
引用
收藏
页数：9
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