Design of MIMO WLAN 2.4/5.2/5.8 and 5G SUB-6 GHz antennas for laptop computer applications

Abstract

The paper proposes a design of MIMO antennas with broadband effect for laptop computers. The antenna is a use stereoscopic bending-coupled of architecture. The coupled-fed antenna is composed of a grounded inverted L-shaped arm, two short metal arms connected to the feed. The structure of isolation mechanism is a T-type metal strip with multi-arms to reduce the interaction between the two antennas. The overall size of the design is (LxWxH) is 6.2 × 50 × 4.2 mm3. The design antennas and isolation element made of 0.8mm FR-4 substrate is placed on upper left corner of the system ground with a size of (L× W) 200 × 260mm2. From the results, this design of MIMO antennas can be applied to the bands of WLAN2.4/5.2 /5.8GHz (2.4-2.484 GHz, 5.15-5.35 GHz, 5.725-5.825 GHz), and 5G NR SUB-6GHz (3.3- 4.2 GHz, 4.8-5 GHz).