A High Isolation Dual-band WiFi MIMO Antenna Design

Abstract

Abstract In this paper, a dual-band WiFi MIMO antenna with high isolation is designed. The antenna is F-Type structure, and the resonant points of high frequency and low frequency are mainly controlled by two branches of ‘F’. In order to improve the isolation between antennas, multiple symmetrically distributed slots are introduced on the ground, by adjusting the size and spacing of each group of slots, the effect of 2.4GHz & 5G dual-band decoupling is realized. Through HFSS simulation and optimization, antenna in frequency of 2.4-2.5GHz & 5.2-5.825GHz, S11 meet-10db bandwidth requirements, the isolation between the two ports is higher than 25dB, meet the design requirements.