920 MHz band low power rectenna with the dual loop antenna

Abstract

In this paper, the 920 MHz band low power rectenna with the proposed dual loop antenna is described. The dual loop antenna is consisting of two loop antennas connected in parallel to the rectifier circuit. Although the dual loop antenna has the same inductance as the small loop antenna, it has approximately 4 times loop length than that of the small loop antenna. Due to larger size, antenna gain of the dual loop antenna is higher than that of the small loop antenna. This can make higher rectification efficiency including antenna gain. The basis of the rectenna can be confirmed with simulational and experimental investigations.