A Broadband MIMO Antenna Array for WiFi-6E/7 in Laptop Computer Applications

This paper proposed a broadband 2×2 MIMO antenna array for a WiFi-6E/7 mobile communication system in laptop computer applications. The structure of the single antenna element is composed of a compact loop antenna with a straight parasitic metal line structure. The operating frequency band covers the WiFi-6E/7 band and the future possible WiFi-7 frequency band (∼9 GHz). The single antenna size is 20 mm × 4.0 mm × 4.0 mm. The 2×2 MIMO antenna array is on the edge of the top of a laptop screen. The overall size of the 2×2 MIMO antenna array is 44 mm × 4.0 mm × 4.0 mm. The antenna design does not use extra passive components for impedance matching or isolation technology to improve isolation. The isolation is more than 16.5 dB, the measured efficiency of the antenna is between 65–90%, and the value of gain is between 4.2–8.5 dBi.