Low-profile wideband circularly polarised single-layer metasurface antenna

被引：40

作者：

Liang, Zhipeng ^{[1
]}

Ouyang, Jun ^{[1
]}

Yang, Feng ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 611731, Sichuan, Peoples R China

来源：

ELECTRONICS LETTERS | 2018年 / 54卷 / 24期

关键词：

broadband antennas; electromagnetic wave polarisation; antenna radiation patterns; antenna feeds; slot antennas; microwave antennas; circularly polarised fields; circularly polarised single-layer metasurface antenna; low-profile wideband metasurface antenna; axial ratio bandwidth; low-profile single-fed metasurface antenna; unit cells; modified L-type slot; impedance bandwidth; dielectric-filled antenna; frequency; 5; 7; GHz; noise figure-10; 0; dB; bandwidth; 35 GHz to 6; 08; PATCH ANTENNA;

D O I：

10.1049/el.2018.6790

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 novel low-profile single-fed circularly polarised single-layer metasurface antenna for wideband operation is proposed in this Letter. The metasurface antenna consists of nine unit cells arranged in a 3 x 3 layout. Four slits are incorporated into four of them, respectively, to form two orthogonal currents with 90 degrees phase difference; hence, circularly polarised fields are excited. Moreover, a modified L-type slot is etched on the middle lattice to improve impedance bandwidth and axial ratio performance. The proposed dielectric-filled ((r) = 3.5, tan = 0.001) antenna with a low profile of 0.038(0) ((0) is the working wavelength at 5.7 GHz in free space) achieves about 18.0% measured -10 dB impedance bandwidth. The measured 3-dB axial ratio bandwidth of the proposed antenna is about 12.8% (5.35-6.08 GHz) with a broadside gain of more than 6.9 dBi.

引用

页码：1362 / 1363

页数：2

共 8 条

[1] Wideband Circularly Polarized Patch Antennas on Reactive Impedance Substrates [J].