Metasurface Cloaks for Reduction of Mutual Coupling in Slot Antennas at C-Band Frequencies

With the intention of reducing the detrimental effect of mutual coupling between two slot antennas placed in very close proximity, designed to operate at C-band frequencies, we make use of the specifically designed metasurface cloaks, which employs the concept of mantle cloaking. In this paper, it is demonstrated that by encasing each edge of the individual slot antenna with the elliptical metasurface cloaks, we are able to achieve a significant reduction in the mutual coupling. This decoupling effect is evident in the plots for S-parameters of the slot antennas. Along with this, restoration of the far-field radiation patterns is also observed. Thus, these explicitly tailored cloaks enable each slot antenna to radiate independently, as if the antennas were functioning in an isolated environment.