3-D-Printed Spiral Inverted Ridge Circularly Polarized Horn Antenna With One Octave Bandwidth

被引：2

作者：

Song, Miaoshan ^{[1
]}

Zhang, Xue ^{[2
]}

Wang, Zhengpeng ^{[1
]}

Xu, Ding ^{[1
]}

Loh, Tian Hong ^{[3
]}

Gao, Steven ^{[4
]}

机构：

[1] Beihang Univ BUAA, Sch Elect & Informat Engn, Electromagnet Lab, Beijing 100191, Peoples R China

[2] China Satellite Network Grp Co Ltd, Beijing 100029, Peoples R China

[3] Natl Phys Lab, Dept Electromagnet & Electrochem Technol, Teddington TW11 0LW, England

[4] Chinese Univ Hong Kong, Dept Elect Engn, Hong Kong, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2024年 / 23卷 / 10期

关键词：

3-D printing; circular polarization; horn antenna; one octave; spiral inverted ridge; DESIGN; GAIN;

D O I：

10.1109/LAWP.2024.3418498

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 letter presents a novel 3-D-printed spiral inverted ridge horn antenna with excellent broadband circularly polarized (CP) performance in the frequency range of 8 GHz to 16 GHz. For the first time, a circled dash-shaped inverted ridge is proposed to enhance the bandwidth of the circular waveguide. Through careful investigation of the propagation characteristics of the proposed inverted ridge, it has been found that, in order to achieve high-performance circular polarization over one-octave bandwidth, the total length of the spiral inverted ridge should be one guided wavelength of the lowest operating frequency. 3-D printing technology is utilized to manufacture the proposed antenna for the desired geometric complexity. The measured results validate the accuracy of simulated results, with a measured axial ratio (AR) of less than 1.5 dB and a reflection coefficient of less than -14 dB from 8 GHz to 16 GHz. Moreover, the measured 3 dB beamwidth of the radiation pattern remains stable between 41 degrees and 70 degrees.

引用

页码：3018 / 3022

页数：5

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