New design of microstrip patch antenna at 28 GHZ and 4˟ 4 MIMO configuration with improved characteristics for IOT applications. - Samar Ibrahim Farghaly; Kamel E. Abo Al-Ela; Abdelaziz Y. Zaki; Hager Shawky Fouda (EURASIP J. Wirel. Commun. Netw., 2025)