Broadband Exterior Cloaking

TL;DR

This paper demonstrates a broadband exterior cloaking method using multiple active devices that create a quiet zone, effectively rendering objects within it invisible over a wide frequency range, validated through simulations.

Contribution

The paper introduces a broadband exterior cloaking technique employing active devices to achieve invisibility over a broad frequency spectrum.

Findings

Effective cloaking over a broad frequency range.

Creation of a quiet zone with minimal wave amplitude.

Successful simulation validation of the cloaking method.

Abstract

It is shown how a recently proposed method of cloaking is effective over a broad range of frequencies. The method is based on three or more active devices. The devices, while not radiating significantly, create a ``quiet zone'' between the devices where the wave amplitude is small. Objects placed within this region are virtually invisible. The cloaking is demonstrated by simulations with a broadband incident pulse.