Antenna Module with New Wideband 5G-Antenna Array at 28 GHz in Combination with GNSS- and 4G/WLAN/DSRC in Automotive Environment

A new 5G-antenna module is presented consisting of a four radiator multiple input multiple output (MIMO) wideband antenna array at 24.25 - 29.5 GHz in combination with a 4G/WLAN/DSRC antenna at 0.7 - 6 GHz in close proximity. Additionally the antenna array is enclosed by a ring antenna for GNSS-satellite reception at Ll-band. The antenna array provides a wideband behaviour with an input reflection coefficient better than -10 dB in the complete frequency range and an omnidirectional behaviour with slight priority to driving- and back direction. Results of the 5G antenna are shown by measurement and simulation. Also in combination with the 4G/WLAN/DSRC antenna and a GNSS scarabaeus antenna surrounding the array, the 5G-antenna keeps its performance, showing also low mutual coupling of all the antenna elements.