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Design of a Carpet Cloak to Conceal an Antenna Located Underneath

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3 Author(s)
Wenxuan Tang ; Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA ; Yang Hao ; Mittra, R.

The “invisible carpet cloak” has recently been created and demonstrated as a novel device that serves to conceal conducting objects from external detections (J. Li and J. B. Pendry, “Hiding under the carpet: A new strategy for cloaking,” Phys. Rev. Lett., vol. 101, no. 20, p. 203901, 2008). In this work, we have explored its new function as a new type of stealth radome to protect antennas. A technique called “virtual boundary” is implemented to the carpet cloak to ensure that a conducting antenna element located beneath the carpet can transmit and receive signals, while being undetectable to the external incidences. Meanwhile, the carpet cloak functions as a novel lens to create highly directive beams. Numerical simulations based on finite-difference time-domain (FDTD) method have demonstrated the expected performances over the frequency range from 8 GHz to 12 GHz (the X-band).

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Antennas and Propagation, IEEE Transactions on  (Volume:60 ,  Issue: 9 )