High gain 3×3 Circularly Polarized Antenna Array With V-Shaped Slots for Wireless Power Transmission

Abstract

Wireless power transmission is an alternative energy solution to supply power to the electrical and electronics equipment without wired connection. In this paper we present an antenna array design which is the crucial part in a Rectenna (rectifier + antenna) system. The developed design consists of a new 3×3 antenna array having an operating frequency of 2.45 GHz with inclined slots at the center of each antenna element to improve the circular polarization and V-shaped slots to enhance the bandwidth around the operating frequency. The proposed design provides a high gain of 9.14dBi and overall size of 26.18×11.86 cm2.Simulation and measurement results are in good agreement which make this antenna very suitable for WPT applications.