Wideband Circularly Polarized Rectangular Dielectric Resonator Antennas Using Square-Shaped Slots

被引：58
作者：
Patel, Pragati [1 ]
Mukherjee, Biswajeet [2 ]
Mukherjee, Jayanta [1 ]
机构：
[1] Indian Inst Technol, Dept Elect Engn, Bombay 400076, Maharashtra, India
[2] IIIT, Dept Elect & Commun Engn, Jabalpur 482005, India
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2016年 / 15卷
关键词：
Axial ratio; bandwidth; circular polarization; modes; square slots; wideband;
D O I：
10.1109/LAWP.2015.2506039
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：
Two wideband single fed circularly polarized (CP) rectangular dielectric resonator antennas (DRAs) comprising square-shaped slots are proposed. Initially, two wideband linearly polarized DRAs are designed with high aspect ratio to simultaneously excite and merge two resonant modes, and. Then, CP is obtained by the technique of perturbation in the form of four and two square slots along the diagonal. The slots excite two orthogonal modes with same magnitude and quadrature in phase. Two antenna prototypes are experimentally verified. The measured impedance bandwidths are 48% (4.7-7.7 GHz) and 41% (4.6-7 GHz) in conjunction with the 3-dB axial-ratio bandwidth of 11.5% (5.7-6.4 GHz) and 24% (4.7-6 GHz).
引用
收藏
页码：1309 / 1312
页数：4
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