Abstract
In this article, we investigated the performance of circularly polarized (CP) array antennas for wireless power transmission (WPT) application. During the development process, three different mounting configurations for the transmitting CP antenna are considered, assuming that the proposed CP antenna could be a part of the WPT system. The wireless power transmission system employing the proposed antenna design as the transmitting antenna is intended for power transfer either between satellites in space or between a satellite and a ground segment. To implement the various mounting configurations, multiple transmitting array antennas, designed to operate at a center frequency of 5.8 GHz, were fabricated and tested. The performance of the proposed CP antenna was evaluated for each configuration in terms of return loss, gain, axial ratio, and radiation pattern. The experimental results of all three configurations support the design theory very well.