Decoupling and Cloaking of Tailored Complementary Cloaked Antennas

Abstract

We explore complementary cloaked antennas to improve their designs and to increase our understanding of the fundamental concepts of mutual coupling and cloaking effects by metasurface cloaks. We show that a cloaked planar dipole antenna (CPDA) and a cylindrically grounded cloaked slot antenna (CGCSA) placed in close proximity can be decoupled in the near field and cloaked in the far field of using planar metasurface cloaks; the antennas operate as if they were isolated. We perform an intensive parametric study to determine the optimal decoupling and cloaking regimes for both the CPDA and the CGCSA. The structures developed are in good agreement with previous findings regarding the cloaking effects, even when complementary antennas are in close proximity. Such analysis can also be applied to other types of complementary antennas placed close together that operate in neighboring frequency bands.

Keywords

• Cloaking
• complementary structure
• metasurface
• planar antennas
• slot antennas
• scattering cancellation