An Automotive Antenna Set at 26.5 GHz for 5G-Mobile Communication

An automotive antenna set of four collinear arrays between 24.25 GHz and 29.5 GHz is introduced for application of 5G mobile communication in roof radomes of future cars. Each of the single antenna elements combines high gain in horizontal direction with an omnidirectional pattern which is well suited for application in multiple input multiple output (MIMO) transmission. In a phased array application the four antenna elements yield in the horizontal plane a high gain of 16 dBi at driving direction and 10.5 dBi in lateral direction which yields good access along the driving path. The gain of the antenna elements, efficiency, mutual coupling and the variable radiation characteristics of the antenna array are investigated by means of simulation and measurement.