Inverted-Sigmoid Shaped Multiband Dielectric Resonator Antenna With Dual-Band Circular Polarization

被引：64
作者：
Varshney, Gaurav [1 ]
Gotra, Shailza [2 ,3 ]
Pandey, V. S. [4 ]
Yaduvanshi, R. S. [5 ]
机构：
[1] Natl Inst Technol Delhi, Elect & Commun Engn, Delhi 110040, India
[2] Amity Univ, Elect & Commun Engn, Noida, India
[3] Natl Inst Technol, Dept Elect & Commun Engn, Delhi 110040, India
[4] Natl Inst Technol Delhi, Phys Dept, Delhi, India
[5] AIT, Dept Elect & Commun Engn, Delhi 110031, India
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2018年 / 66卷 / 04期
关键词：
Circular polarization; dielectric resonator antenna (DRA); dual band; inverted-sigmoid shape; BANDWIDTH; MODE;
D O I：
10.1109/TAP.2018.2800799
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 multiband dielectric resonator (DR) antenna is proposed with dual-band circularly polarized (CP) response. This antenna consists of an inverted-sigmoid shaped DR. A metallic strip is applied at the surface of the DR to achieve the circular polarization. The fundamental and higher order hybrid modes are excited in the antenna structure because of the specific geometry. The antenna with dual-band CP response provides the measured 3 dB axial ratio (AR) bandwidth of 19.98% in the lower band and 3.07% in the upper band. The upper band 3 dB AR response can be tuned in different 10 dB impedance passbands of the antenna by changing the location and width of the metallic strip. Antenna response can also be tuned to obtain the triple band CP operation.
引用
收藏
页码：2067 / 2072
页数：6
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