材料科学
镜头(地质)
光学
电介质
阻抗匹配
反射(计算机编程)
天线(收音机)
介电常数
光电子学
电阻抗
计算机科学
电信
物理
电气工程
工程类
程序设计语言
作者
Bazilah Baharom,Ryo Ishihara,Yoshiki Sugimoto,Kunio Sakakibara,Nobuyoshi Kikuma,Takayuki Arai,Takayoshi Suganuma,Tomohiro Saito
出处
期刊:IEEE Access
[Institute of Electrical and Electronics Engineers]
日期:2023-01-01
卷期号:11: 8481-8491
被引量:1
标识
DOI:10.1109/access.2023.3239397
摘要
This study proposes a dielectric lens antenna that implements an impedance matching layer comprising square-pillar periodic structures on the lens surface to reduce the surface reflection formed in the lens from a high-permittivity dielectric material. To ease the fabrication process, the matching structures (MS) implemented on the lens surface are made of the same dielectric material as the dielectric lens through microfabrication structure. The dimensions of the square-pillar periodic MS unit cell are optimized for its period, space occupancy ratio, and height using periodic boundary simulation, considering the plane wave incident. Electromagnetic simulations and experiments to evaluate the effectiveness of the optimized square-pillar periodic MS were conducted. Implementing the square-pillar periodic MS to a lens composed of modified-polyphenylene ether (modified-PPE) with a relative permittivity of 5.34 assists in reducing the surface reflection inside the lens compared with the lens without anti-reflection and improves the peak gain by approximately 2 dB from 250 to 290 GHz.
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