16-Elements Helical Antenna System Integration with a Solar Cell Powered IoT Collector

NaveedUllah N., TEKİN A.

2019 IEEE Conference on Antenna Measurements Applications (CAMA), Kuta, Bali, Indonesia, 23 - 25 October 2019 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/cama47423.2019.8959623
  • City: Kuta, Bali, Indonesia
  • Keywords: IoT, ISM, helical antenna, solar cell


An 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.