Open AccessBroadband backscattering reduction realized by array of lossy scatterers
Author(s) -
Feifei Li,
Qun Lou,
Pïng Chen,
Yin Poo,
RuiXin Wu
Publication year - 2018
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.26.034711
Subject(s) - lossy compression , optics , broadband , materials science , reduction (mathematics) , scattering , resistive touchscreen , reflection (computer programming) , absorption (acoustics) , range (aeronautics) , dielectric , physics , optoelectronics , computer science , geometry , mathematics , artificial intelligence , composite material , computer vision , programming language
We propose an array of randomly distributed lossy scatterers to achieve broadband backscattering reduction. The array efficiently combines absorption and diffusion functionalities by using three subarrays made of ferromagnetic or dielectric scatterers based on resistive octagonal rings. The subarrays have strong absorption in different frequency bands, whereas they have different reflection phases in a wide frequency band, resulting in -10 dB backscattering reduction in a wide frequency range (from 3.15 to 18 GHz). The results are verified by experiments. Our work provides a new way to reduce backscattering in a wider frequency range and at lower frequencies.