Design of High Isolation Omnidirectional Antenna System of Pico Site for 5G
In this paper,a high isolation omnidirectional 4×4 MIMO antenna system operating in 5G N41 is presented and designed.The antenna system is composed of an aluminum substrate,four planar inverted F antennas,and two L-shaped isolation units.The size of the antenna system is 180 mm×180 mm×10 mm.The numerical simulation results show that the planar inverted F antenna has an input return loss less than-10 dB,the isolation between two antenna ports is more than 25 dB,and the antenna gain reaches 1 dBi.The omnidirectional 4×4 MIMO antenna system has the characteristics of low profile,high isolation and easy processing and integration,which has a better application prospect.
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