Open AccessExperimental demonstration of an ultra-thin radar-infrared bi-stealth rasorber
Author(s) -
Kaihuai Wen,
Tiancheng Han,
Haipeng Lu,
Wei Luo,
Linbo Zhang,
Haiyan Chen,
Difei Liang,
Longjiang Deng
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.418575
Subject(s) - emissivity , materials science , infrared , microwave , optics , absorption (acoustics) , infrared window , low emissivity , optoelectronics , molar absorptivity , transmission (telecommunications) , radar , physics , telecommunications , quantum mechanics , computer science
We propose a radar-infrared bi-stealth rasorber that not only provides broad microwave absorptivity and low infrared emissivity but also possesses a microwave transmission window at low frequency. It is composed of three functional layers, which are carefully designed to independently control the infrared emission, microwave absorption, and transmission, respectively. The structure exhibits broadband (8.1-19.3 GHz) and high-efficiency (>90%) absorption. A transmission window appears at low frequency with a transmission peak of 80% at 2.68 GHz. The thermal emissivity of the structure is about 0.27 in the atmosphere window, which is close to that of metal. Moreover, the total thickness of the proposed structure is only 3.713 mm. The low-infrared-emissivity, high-microwave-absorption and frequency-selective-transmission properties promise it will find potential applications in various stealth fields.