On-Glass Antenna for Connected Vehicle Communications 2020-01-1370
In this paper, a glass patch antenna for 5Hz Wi-Fi, Dedicated Short Range Communications (DSRC), vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications is presented. The proposed antenna is embedded into a laminated vehicle window glass (outer and inner layers) and using the inner layer glass and polyvinylbutyral (PVB) layer as antenna substrate. The ground plan of the patch antenna is a layer of silver screen printed onto inner surface of the inner glass. The patch antenna is feed by a coupled aperture on the ground plan, therefore, no hole is required on the glass. The antenna is conformal to the glass and can be hidden under the black paint around the perimeter of the window glass. The measured peak gain of the antenna is around 5 dBi and the antenna can be embedded into windshield, back window and side windows for a combined omnidirectional far field radiation pattern in terrestrial direction. Since the antenna is part of the window glass, not additional antenna packaging required. In addition the patch antenna can be embedded around the perimeter of window glass which offer more flexibility to package antennas on the vehicle for reliable high speed data communication.