A GPS/Wi-Fi dual-band arc-shaped slot patch antenna for UAV application

In this paper, a dual-band capacitive-fed circular patch antenna with an arc-shaped slot is proposed for 1.575 GHz GPS and Wi-Fi 2.4 GHz applications. The antenna will be embedded on an unmanned aerial vehicle (UAV) for Wi-Fi 2.4 GHz communication with a base station and GPS reception. A circular feeding disk is sandwiched between two substrate layers. Foam is used for the bottom layer and the top layer is Rogers Duroid 5880 microwave laminate. The capacitive feeding disk is used for improving the impedance bandwidth of the antenna, so the antenna can cover 2390 to 2515 MHz for full support of the 2.4 GHz band Wi-Fi communication between UAV and GBS. The foam-Duroid stacked geometry can further enhance the bandwidths for both GPS 1.575 GHz and Wi-Fi 2.4 GHz when compared to purely Duroid form. The antenna has been simulated and fabricated. The simulation and measurement results are presented in this paper.