Wideband Microstrip Antenna Design Using LoRa and GPS for Collision Warning Application

This paper provided a design for a microstrip antenna with a wide bandwidth covering the LoRa and GPS working frequencies. The antenna is designed for vehicle-to-vehicle communication needs, enabling data sharing of location information as a form of collision warning. The designed microstrip antenna operated at frequencies of 915 MHz and 1575 MHz by trimming most of the ground plane to achieve bandwidth widening, followed by fine-tuning to achieve optimal results. The final design of the microstrip antenna, measuring 60 mm x 75.1 mm, exhibited a return loss of around −20 dB both at 915 MHz and 1575 MHz. The obtained VSWR values are around 1.22 both at 915 MHz and 1575 MHz. The proposed and fabricated antena has wideband characteristic and has operational frequency range from 822 MHz to 1820 MHz.