%0 Journal Article %T Design and analysis of a frequency reconfigurable hybrid fractal microstrip antenna with modified patch and ground plane for millimeter wave energy harvesting applications %A KHAN, P.I. %A SUDHAKARU, K. %J Sigma Journal of Engineering and Natural Sciences %D 2026 %V 44 %P 3177-3194 %R 10.14744/sigma.2026.2150