Crossed Dipole Loaded With Magneto-Electric Dipole for Wideband and Wide-Beam Circularly Polarized Radiation

被引：145
作者：
Ta, Son Xuat [1 ]
Park, Ikmo [1 ]
机构：
[1] Ajou Univ, Dept Elect & Comp Engn, Suwon 443749, South Korea
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2015年 / 14卷
关键词：
Circular polarization; crossed dipole; magneto-electric dipole; single feed; wide-beam; wideband; ANTENNA; INMARSAT; DESIGN;
D O I：
10.1109/LAWP.2014.2363944
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 crossed dipole that is loaded with a magneto-electric dipole to produce the wideband and wide-beam circularly polarized radiation characteristics is proposed. The crossed dipole is incorporated with double-printed vacant-quarter rings to feed the antenna. The antenna is backed by a metallic cavity to provide a unidirectional radiation pattern with a wide axial-ratio (AR) beamwidth and a high front-to-back ratio. Experimental results showed that the prototype with an overall size of 120 x 120 x 30.5 mm(3) has a |S-11| < -10 dB bandwidth of 1.274-2.360 GHz and a 3-dB AR bandwidth of 1.39-1.82 GHz. The antenna showed a right-hand circular polarization (CP) radiation with a very wide 3-dB AR beamwidth (> 165 degrees) and a high radiation efficiency (94%) within the operational bandwidth.
引用
收藏
页码：358 / 361
页数：4
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