Wideband Circularly Polarized 3-D Printed Dielectric Rod Antenna

被引：25

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

页码：745 / 753

页数：9

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