Printable windscreen quad-band GSM antenna

The design and simulation of a suitable GSM antenna for integration with the rear windscreen of a car is presented in this paper. A bent asymmetric dipole antenna was chosen to minimise the surface area and thus cause minimal effect to the aesthetics of the car as well as to the driver´s visibility. The antenna has been simulated on a realistic three-layered windscreen. Parasitics were added to the design to improve the bandwidth at 900 and 1800 MHz at both European and American bands. The bent asymmetric dipole was advantageous compared to a straight asymmetric dipole because i) the radiation pattern was more omnidirectional and ii) the parasitics at each band could be designed to work independently of each other.