An optimization-based design of a wideband, polarization-independent reflectarray antenna at terahertz frequencies

被引：2
|
作者：
Hashemi, Sepideh [1 ]
Yahaghi, Alireza [1 ]
Mohajeri, Farzad [1 ]
机构：
[1] Shiraz Univ, Sch Elect & Comp Engn, Shiraz 5115471348, Iran
来源：
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS | 2021年 / 45卷
关键词：
Reflectarray; Bandwidth; Random hill-climbing algorithm; Terahertz frequencies; MILLIMETER-WAVE; ELEMENT; KU; LINES;
D O I：
10.1016/j.photonics.2021.100918
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A broadband reflectarray antenna is proposed for operating at THz frequencies. An array of single-layer elements is composed of gold patches printed on a grounded cyclic olefin copolymer (COC) substrate. The elements are designed to have a smooth and linear phase reflection curve versus element positions. A random hill-climbing (RHC) optimization algorithm is applied to obtain the broadest bandwidth around the design frequency. The proposed antenna shows 3 dB relative bandwidth of 25% ranging from 0.9 to 1.15 THz, and it has a polarizationindependent feature and low loss for better reflectarray performance.
引用
收藏
页数：6
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