A Circularly Polarized Sub-Terahertz Antenna With Low-Profile and High-Gain for 6G Wireless Communication Systems

被引:27
|
作者
Aqlan, Basem [1 ,2 ]
Himdi, Mohamed [2 ]
Vettikalladi, Hamsakutty [1 ]
Le-Coq, Laurent [2 ]
机构
[1] King Saud Univ, Dept Elect Engn, Riyadh 11421, Saudi Arabia
[2] Univ Rennes 1, Inst Elect & Technol NumeR IETR, F-35000 Rennes, France
来源
IEEE ACCESS | 2021年 / 9卷
关键词
Axial ratio (AR); circularly polarized (CP); Fabry-Perot cavity (FPC) antenna; frequency selective surface (FSS); high-gain; laser-cutting technology; low-profile; low-cost; metallic layers; sub-terahertz (THz); WAVE;
D O I
10.1109/ACCESS.2021.3109161
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A low-profile high-gain fully-metallic circularly polarized (CP) Fabry-Perot cavity (FPC) antenna using laser cutting technology at 300 GHz is presented. The CP-FPC antenna consists of seven metallic layers arranged from the bottom to the top: a ground layer, an integrated stepped horn element (three layers), a coupling slots layer, a cavity layer, and an aperture-frequency selective surface (FSS) layer. The high gain and self-generation of circular polarization are made by using this FSS layer by introducing periodic hexagonal -shaped aperture in a thin metallic layer. The aperture-FSS layer is used to excite two orthogonal modes of equal in magnitude and in phase quadrature, thus obtaining the RHCP radiation. The proposed CP-FPC antenna structure achieves a measured peak RHCP gain of 16.5 dBic at 292 GHz. The antenna achieves a measured impedance bandwidth of 281 - 305 GHz for the reflection coefficient less than -10 dB. The axial ratio (AR) bandwidth AR <= 3 dB is 5.12 GHz from 292.8 to 297.92 GHz. The fabricated CP-FPC antenna uses a low-cost laser cutting technique with a low-profile and an area of 2.6 mm x 2.6 mm x 1.24 mm. The experimental results confirm a good agreement between the simulation and the measurements.
引用
收藏
页码:122607 / 122617
页数:11
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