Broadband exterior cloaking

Fernando Guevara Vasquez, Graeme W. Milton, Daniel Onofrei
2009 Optics Express  
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.
doi:10.1364/oe.17.014800 pmid:19687958 fatcat:xvz4gn2qffdkdje7zkmr5epdzm