Efficiency Improvement of Dual-Band Wireless Power Transfer (DB-WPT) System with U-shape Resonator and Capacitively Loaded E-shape Defected Ground Structure (DGS). - Hany A. Atallah; Mahmoud Mohamed Ahmed El Negm Yousef; Adel B. Abdel-Rahman (Wirel. Pers. Commun., 2021)