High efficient 2.4GHz band high power rectenna with the direct matching topology

This paper describes the direct matching topology of high efficient rectenna in high power operation. In the conventional rectenna, insertion loss of the matching circuit is a main contributor for rectenna's efficiency degradation. The direct matching topology with the inductive folded dipole antenna and the bridge diode is proposed to remove the matching circuit with loss. The developed 2.4 GHz band rectenna with the proposed topology achieves rectification efficiency of 80.9% at 27 dBm, even without odd order harmonics' reactive termination. This is top performance with commercial-based Si-SBDs.