Proposal of multidirectional power transmission system using monopole antennas and parasitic elements

We propose a power transmission scheme based on a radio-wave method with monopole antennas and parasitic elements. Since the proposed scheme uses an omnidirectional monopole antenna, power transmission can be achieved not only in one direction but also in multiple directions. Moreover, if parasitic elements are placed between the transmitter (Tx) and the receiver (Rx) monopole antennas, the coupling between the antennas is improved. In this article, the performance of the proposed scheme is evaluated in terms of power coupling, the voltage standing wave ratio (VSWR), and the radiation pattern. These results confirmed that power transmission in multiple directions is more effective than in one direction.