Study for Simultaneous Degradation of 2nd and 3rd Harmonics Radiation using a Random Rectenna Array

抄録

Rectenna array is a power reception device of Satellite Solar Power System (SSPS). In the ground sites of SSPS, there are huge number of rectenna elements (rectenna array) that is a device which was equipped with rectifying circuits and receiving antennas. A diode is used in a rectenna, which is nonlinear element, higher harmonic components are generated. Once these higher harmonic waves are reradiate to free space, the electromagnetic interference problems may occur to existing communication system. One method to decrease the higher harmonics is usage of a random rectenna array, which is a method to change the harmonics phase from rectenna elements randomly. This composes a rectenna array which does not have strong directivity on specific direction. In this paper, we proposed a method to simultaneous degradation of 2nd and 3rd harmonics at the same time by adjusting phase of each rectenna elements. In the calculation, degradation level of random rectenna array becomes more than -15 dB in 100 elements compared to the conventional case, both in omni-directional element and CMSA element.