A New Wideband Circularly Polarized Stair-Shaped Dielectric Resonator Antenna

被引：123
作者：
Fakhte, Saeed [1 ]
Oraizi, Homayoon [1 ]
Karimian, Reza [1 ]
Fakhte, Rasoul [2 ]
机构：
[1] Iran Univ Sci & Technol, Ctr Excellence Railway Transportat, Dept Elect Engn, Tehran 1684613114, Iran
[2] Univ Guilan, Dept Elect Engn, Rasht 4199613769, Iran
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2015年 / 63卷 / 04期
关键词：
Axial ratio (AR); circular polarization (CP); dielectric resonator (DR); dielectric resonator antenna (DRA); MICROSTRIP ANTENNA; RADIATION;
D O I：
10.1109/TAP.2015.2392131
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：
A circularly polarized stair-shaped dielectric resonator antenna (DRA) with a wideband circular polarization (CP) radiation is introduced for wireless local area network (WLAN) applications. This antenna is implemented by using two rectangular dielectric resonators (DRs), which are joined together to form a stair-shaped dielectric resonator antenna (DRA). In this structure, the excitation of multiple orthogonal modes leads to a wideband CP bandwidth. Measured results show that the proposed antenna has an axial ratio (AR) bandwidth of 22% (5.2-6.5 GHz), an impedance bandwidth of 37% (4.6-6.7 GHz), and a peak gain of 5.7 dB. In addition, the antenna radiation efficiency of more than 90% is achieved.
引用
收藏
页码：1828 / 1832
页数：5
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