Naziri, Iskandar, and Elfarizanis Baharudin. “Transmission Efficiency Analysis of Different Patch Antenna Design Configuration in Various Distance for Wireless Power Transfer”. Evolution in Electrical and Electronic Engineering, vol. 4, no. 1, May 2023, pp. 17-25, https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/8565.