Development of semi-circular corner cut MIMO antenna for 5G-advanced and 6G automotive wireless applications

5G-sub-6GHz triple band MIMO
antenna is designed and analyzed on an FR-4
substrate. The transition from a simple microstrip
patch antenna to the proposed rectangular slotted
microstrip patch antenna is described in this
article. This article consists of single-element and
dual-element MIMO antennas with ℇr of 4.3; their
dimensions are 50 x 60 mm2, 50 x 120 mm2. Three
resonant frequencies, 1.98 GHz, 3GHz, and 5.2GHz
under sub-6GHz, are obtained by single-element
and dual-element antennas. These antennas were
designed using HFSS, which was also used to
determine MIMO parameters, including ECC, DG,
MEG, S-parameters, gain, and VSWR. S11 of
single-element antennas at those resonant
frequencies is -26.86 dB, -27.54 dB, and -14 dB;
S11 of two-element MIMO antenna is -29.5 dB, -
24.7 and -14 dB. The antenna's total gain for single
and dual port MIMO is 3.39dBi and 6.074 dBi.
This rectangular slotted microstrip patch antenna
is suitable for various applications, such as FWA
systems operating at 3 GHz frequency and 5.2 GHz
high-bandwidth activities like cloud computing,
video streaming, and mission-critical
communications. It can also support future
advancements in Wi-Fi and 5G technology.