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

•Achieves high data rate and reliable communication for 5G-advanced and 6 G automotive applications.•Semi-circular cut patch antenna with defected ground structure for 5 G and 6 G frequency bands.•2-element MIMO configuration resonates at 3.58 GHz, 5.86 GHz, and 7.36 GHz with 12.5 dB peak gain.•The antenna supports diversity parameters for high data rate applications in automotive wireless systems. High data rates and reliable communication are key requirements for next-generation communications. Multi-Input Multi-Output (MIMO) antennas are among the promising solutions to achieve the significant characteristics needed for 5G-Advanced and 6 G automotive applications. This article presents a semi-circular cut on a corner patch antenna with a defected ground structure (DGS) for the 5 G and 6 G frequency bands, intended for Low Earth Orbit (LEO) satellite communications. The single element of the proposed design has been extended into a 2-element MIMO configuration, resonating at 3.58 GHz, 5.86 GHz, and 7.36 GHz, with a peak gain of about 12.5 dB The proposed design demonstrates all the necessary diversity performance parameters, Envelope correlation coefficient (ECC) = 0.001, Diversity Gain (DG) = 10 dB, Channel Capacity Loss (CCL) < 0.5, Total Active Reflection Coefficient (TARC) < -10 dB showcasing its suitability for high data rate applications. The major challenge in designing the proposed design is to optimize the slots to achieve the required frequency bands along with minimum isolation between the elements. The proposed frequency bands are dedicated to 5G-Advanced and 6 G automotive wireless applications.