Broad band invisibility cloak made of normal dielectric multilayer
Abstract
We present the design, fabrication and performance test of a quasi three-dimensional carpet cloak made of normal dielectric in the microwave regime. Taking advantage of a simple linear coordinate transformation we design a carpet cloak with homogeneous anisotropic medium and then practically realize the device with multilayer of alternating normal dielectric slabs based on the effective medium theory. As a proof-of-concept example, we fabricate the carpet cloak with multilayer of FR4 dielectric slabs with air spacing. The performance of the fabricated design is verified through full-wave numerical simulation and measurement of the far-field scattering electromagnetic waves in a microwave anechoic chamber. Experimental results have demonstrated pronounced cloaking effect in a very broad band from 8 GHz to 18 GHz (whole X and Ku band) due to the low loss, non-dispersive feature of the multilayer dielectric structure.
Keywords
Cite
@article{arxiv.1109.6404,
title = {Broad band invisibility cloak made of normal dielectric multilayer},
author = {Xiaofei Xu and Yijun Feng and Shuai Xiong and Jinlong Fan and Jun-Ming Zhao and Tian Jiang},
journal= {arXiv preprint arXiv:1109.6404},
year = {2011}
}
Comments
10 pages, 4 figures. Accepted in Appl. Phys. Lett