Title: Design method for compensating lateral beam shift of ground-plane cloak

Authors: Yongjune Kim; Sang-Ho Lee; Yongshik Lee; Ilsung Seo; Il-Suek Koh

Addresses: Department of Electrical and Electronic Engineering, Yonsei University, Seoul, 120-749, South Korea ' Department of Electrical and Electronic Engineering, Yonsei University, Seoul, 120-749, South Korea ' Department of Electrical and Electronic Engineering, Yonsei University, Seoul, 120-749, South Korea ' Agency for Defense Development, Daejeon, 305-152, South Korea ' Department of Electronic Engineering, Inha University, Incheon, 402-751, South Korea

Abstract: This paper demonstrates a method to improve the accuracy of the ground-plane cloak by compensating for the lateral beam shift. The lateral beam shift can be compensated by increasing the height of the bump with the upper boundary of the cloak and shifting the reference ground plane downwards in the cloaking region. Moreover, the asymmetric ground-plane cloak, which represents not only the lateral beam shift but also an error of the reflection angle, is also compensated by generating the initial grids unequally. The accuracy of the proposed method is verified via ray tracing simulation.

Keywords: ground-plane cloaks; quasi-conformal mapping; lateral beam shift compensation; reflection angle; ray tracing; simulation; metamaterials; electromagnetic cloaks; asymmetric boundaries.

DOI: 10.1504/IJNT.2016.077079

International Journal of Nanotechnology, 2016 Vol.13 No.4/5/6, pp.288 - 298

Published online: 19 Jun 2016 *

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