A planar omnidirectional microstrip antenna for 2.4 and 5.8 GHz telemetry in drone ground control stationsBimo Raul Saputro, Hepi Ludiyati, Ken Paramayudha, Vitrasia and Eril MozefE3S Web Conf., 664 (2025) 04001DOI: https://doi.org/10.1051/e3sconf/202566404001