Dual-band dual-polarized hybrid aperture-cylindrical dielectric resonator antenna for wireless applications

被引：30
作者：
Sharma, Anand [1 ]
Das, Gourab [1 ]
Gangwar, Ravi Kumar [1 ]
机构：
[1] Indian Sch Mines, Indian Inst Technol, Dept Elect Engn, Dhanbad 826004, Jharkhand, India
来源：
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING | 2017年 / 27卷 / 05期
关键词：
aperture coupled; cylindrical DRA; dual-band; dual mode; dual-polarized; WiMAX; WLAN;
D O I：
10.1002/mmce.21092
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A dual-band dual-polarized hybrid aperture-cylindrical dielectric resonator antenna (CDRA) is examined in this article. Inverted regular pentagon shaped aperture is not only used to launch two radiating hybrid modes (HEM11 delta and HEM12 delta mode) in CDRA but also act as a radiator. Out of two frequency bands, the lower frequency band is linearly polarized while upper frequency band is the combination of both circular and linear polarization. A circular polarization (CP) characteristic in upper frequency band is created by loading quarter annular stub with microstrip line. LHCP/RHCP can easily be controlled by alternating the position of quarter annular stub. It is operating over two frequency ranges i.e. 2.48-2.98 GHz and 4.66-5.88 GHz with the fractional bandwidth 18.31% and 23.14% respectively. Axial ratio bandwidth (3-dB) is approximately 8.78% (4.9-5.35 GHz) in upper frequency band. The proposed antenna design is suitable WiMAX (2.5/5.5 GHz) and WLAN (2.5/5.5 GHz) applications.
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页数：9
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