Research Article Design and Analysis of a Dual-Band Semitransparent MIMO Antenna for Automotive Applications Lekha Kannappan , 1 Sandeep Kumar Palaniswamy , 1 Malathi Kanagasabai , 2 and Sachin Kumar 1 1 Department of lectronics and Communication ngineering, SRM Institute of Science and Technology, Kattankulathur, India 2 Department of lectronics and Communication ngineering, College of ngineering, Guindy, Anna University, Chennai, India Correspondence should be addressed to Sandeep Kumar Palaniswamy; vrpchs@gmail.com Received 13 November 2022; Revised 6 December 2022; Accepted 10 December 2022; Published 21 December 2022 Academic Editor: Trushit Upadhyaya Copyright © 2022 Lekha Kannappan et al. Tis is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Tis paper presents the design and development of a semitransparent antenna that can be used in automotive applications to support multiple wireless services. Te proposed quad•port multiple input multiple output (MIMO) antenna is comprised of four orthogonally arranged identical semitransparent antenna elements on a transparent substrate. Te MIMO antenna covers the 2.4 GHz band and 3.2–15GHz band, supporting automotive/wireless applications such as Bluetooth, i•Fi, intelligent transport system (ITS), advanced driver assistance systems (ADASs), vehicle to infrastructure (V2I), vehicle to vehicle (V2V), vehicle to network (V2N), and vehicle to device (V2D). Te parameters such as envelope correlation coefcient (ECC), diversity gain (DG), total active refection coefcient (TARC), and channel capacity loss (CCL) are studied to evaluate antenna diversity performance. Te antenna has an ECC of less than 0.15, DG of more than 9.85 dB, TARC of less than −10 dB, and CCL of less than 0.2 bits/s/Hz. Te developed antenna can be easily installed on the mirror and windshield of the vehicles. Also, the housing efect and on•vehicle performance of the antenna at various positions in a car are investigated. 1. Introduction In modern automobiles, advanced transceiving systems are required to alert the driver about the vehicle and to ensure a safer and smoother journey. A transceiver module with an integrated antenna could be able to access multiple pa• rameters of a vehicle, allowing for comfortable driving and passenger entertainment through infotainment services. To provide such amenities, the vehicular antenna should sup• port multiple wireless bands such as GPS, GSM, i•Fi, and Bluetooth. Te automotive antenna connects vehicles in order to create an intelligent transportation system (ITS), with vehicle monitoring and tracking, and a smart trafc system [1]. Customarily, each wireless service requires a dedicated antenna, which takes up a lot of chip space due to the existence of multiple radiators [2]. Te installation of the antennas is also challenging due to the weight, volume, and aesthetic constraints. Tis problem can be solved by integrating multiple wireless services into a single antenna, eliminating the need for additional installation space. An automotive antenna must efciently receive signals from all directions [3]. Terefore, a multiple input multiple output (MIMO) antenna system could be useful as it can overcome the efects of multipath fading, increasing uplink and downlink data speeds without requiring additional spectrum [3]. However, in MIMO antennas, poor isolation between antenna elements increases coupling, which de• grades radiation performance [4]. Te coupling can be re• duced by increasing the distance between the antenna elements, but this increases the size of the MIMO antenna [5]. Te decoupling structures [6, 7], frequency selective surfaces/metamaterials [8, 9], defected ground plane [10, 11], and neutralization lines [12, 13] can improve iso• lation, but they complicate antenna design. Another method for increasing isolation is to position the antenna elements orthogonally to each other. Also, orthogonal antenna Hindawi International Journal of Antennas and Propagation Volume 2022, Article ID 2146084, 16 pages https://doi.org/10.1155/2022/2146084