Wideband Circularly Polarized 3-D Printed Dielectric Rod Antenna

被引：20
作者：
Huang, Jin [1 ,2 ]
Chen, Shengjian Jammy [1 ]
Xue, Zhenghui [2 ]
Withayachumnankul, Withawat [1 ]
Fumeaux, Christophe [1 ]
机构：
[1] Univ Adelaide, Sch Elect & Elect Engn, Adelaide, SA 5005, Australia
[2] Beijing Inst Technol, Sch Informat & Elect, Beijing 100081, Peoples R China
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2020年 / 68卷 / 02期
关键词：
Dielectrics; Permittivity; Bandwidth; Rectangular waveguides; Broadband antennas; Waveguide components; 3-D printing; circular polarization (CP); dielectric rod antenna; wideband;
D O I：
10.1109/TAP.2019.2943325
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：
This article presents a 3-D-printed dielectric rod antenna with wideband circular polarization. The proposed dielectric device comprises two main components: a launching part and a radiating part. The launching part consists of three cylindrical sections with stepped permittivity for wideband impedance matching to the rectangular waveguide feed. The radiating part is a tapered dielectric rod with two helical grooves that generate circular polarization. The experimental results verify that the proposed antenna exhibits a wide impedance bandwidth of 60.3% from 4.05 to 7.55 GHz, a wide 3 dB axial ratio bandwidth of 57.0% from 4.20 to 7.55 GHz, a high realized gain varying within 8.3 and 11.5 dBiC over the whole band, and the desired stable endfire radiation patterns. The 3-D printing technology provides a viable approach to realization of the proposed complicated geometry in a single piece with high accuracy and great flexibility.
引用
收藏
页码：745 / 753
页数：9
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