Analysis of a Triple Band MIMO Antenna for Sub-6 GHz Applications
Govardhani Immadi, M. Venkata Narayana, Ambati Navya, A. Sree Madhuri, Burra Vamsi Krishna, Marri Venkata Siva Gopi
Abstract
A triple band MIMO antenna is designed and analysed at sub-6 GHz for 5G applications on an FR-4 substrate.This paper contains the transition of an antenna from a simple microstrip antenna to the proposed defected L-shaped microstrip patch antenna, which comprises single, 2-element MIMO, and 4-element MIMO antennas with permittivity of 4.3, and the dimensions of those antennas are 60 × 60 mm 2 , 60 × 120 mm 2 , and 120 × 120 mm 2 correspondingly.These antennas resonate at three resonant frequencies which are 3 GHz, 4.1 GHz and 5.2 GHz under sub-6 GHz.HFSS has been used to design these antennas and to obtain the parameters like Sparameters, gain, VSWR, and MIMO parameters like ECC, DG, TARC, and MEG.At those resonant frequencies, single element antenna has S11 of -26.83 dB, -20.06 dB, and -19.16 dB; two element MIMO antennas have S11 of -22.7 dB, -40.09, and -20.54 dB; and quad element MIMO antennas have S11 of -15 dB, -24.8 dB, and -22.7 dB.The overall antenna gains are 2.5061 dBi, 3.1903 dBi, and 4.2989 dBi for single, 2-port, and 4-port MIMO antennas.This antenna is well suited for a range of applications including FWA systems that utilize 3 GHz frequency, Smart Cities and connected vehicles that rely on 4.1 GHz, and high-bandwidth activities such as video streaming, cloud computing, and mission-critical communications that require 5.2 GHz.Additionally, it can support future developments in both 5G and Wi-Fi technologies.