Design of multi-band compact antennas for automotive communications

This paper presents the design of two different quad-band antennas for GSM/DCS/PCS communication equipment to be mounted inside vehicles (cars, trucks, ...). The first solution is an antenna printed on a printed circuit board (PCB), thus reducing the cost virtually to zero, while the second solution is a three-dimensional patch antenna. Both antennas have been designed to be integrated on the PCB, with many other electronic components. The simulated return loss and radiation patterns are reported and analyzed.