Ullah, NaveedTekin, Ahmet2020-08-242020-08-242019978-1-7281-2396-72474-1760http://hdl.handle.net/10679/6816https://doi.org/10.1109/CAMA47423.2019.8959623An 868MHz-915MHz 16-elements helical wire antenna array design with a solar-cell integration is presented. Each element is designed to be omni-directional with the corresponding tuning stubs and ground substrate. This is shared with distributed solar cell array, powering 16- Internet of Things (loT) transceivers operating at multiple Industrial Scientific and Medical (ISM) bands. 370mmx400mm design including the antennas, solar cells, and the tuning stubs can generate 8-watts solar power under direct sun, charging Lithium batteries. 1.6-mm thick planner design with horizontal radiation pattern resulted in average -15dB return loss at 868 MHz without using any external matching elements.engrestrictedAccessconferenceObject697200052891840001910.1109/CAMA47423.2019.8959623IoTISMHelical antennaSolar cell2-s2.0-85078897861