A new method for realizing illusion and shift of electromagnetic target based on active devices

Realization of Radar Illusion Using Active Devices

“…The drawback of the former one is that signals from outside have been blocked, leading to poor communication for the target, while the latter does not affect the information transmission. Compared to the previous works [14][15][16][17][18], our scheme can not only make an object invisible to the outsider but also mimic a totally different object at a different place. It is thus a direct extension of the original work.…”

“…Compared with the transformation optics method, active devices can be designed to work at a broadband of frequencies and do not need materials with extreme parameters. However, only a few works on radar illusion have been reported for an object by using active devices [17,18], to the best of our knowledge.…”

“…Generally speaking, EM invisibility, or illusion in general, can be roughly divided into four categories: (1) rendering the object transparent or invisible by controlling the parameters of metamaterials based on the scattering cancellation theory [7,9]; (2) making the object invisible or illusory by exploiting the abnormal EM properties and the special ability to control EM waves of metamaterials based on the transformation optics theory [10,11]; (3) invisibility using anomalous localized resonance method [12,13]; (4) realizing invisibility or illusion using the surface integral equation of the EM field based on active devices [14][15][16][17][18]. So far, realization of radar illusion for an EM target is mainly based on the method of transformation optics [19][20][21][22][23][24][25][26].…”