Terminal optimization for wireless power transfer with capacitor-connected grids metamaterial waveguides

Capacitor-Connected Grids (CCG) are a recently developed structure, in which additional electric coupling is introduced to conventional purely magnetically coupled magneto-inductive waveguides (MIW). This overcomes the limitation on coupling strength from conventional MIWs. CCG´s potential to be used as ultra-wide band data transfer channels has been demonstrated in previous studies. This paper explores the possibility for using CCG as a power transfer channel by studying terminal matching conditions which can give the optimum power transfer efficiency. The result shows that the matching condition found in this study allows the optimal power transfer efficiency limited only by attenuation.