920MHz Band High Sensitive Rectenna with the High Impedance Folded Dipole Antenna on the Artificial Magnetic Conductor Substrate

In this paper, the 920 MHz band rectenna with the high impedance folded dipole antenna on the artificial magnetic conductor substrate is described for high sensitive operation and placement on metal plates. With the antenna architecture, antenna impedance of 16 k Omega can be obtained, and this can make high efficient operation with the 40 nm SOI-CMOS rectifier IC. The developed rectenna achieves rectification efficiency of 58 % at the input power of -30 dBm. Furthermore, the rectenna on the metal plate achieves rectification efficiency of 72 %. Above values are top performances in 920 MHz band rectennas.