Impact of Miniaturization on a UHF tri-fillar antenna for IoT communication from satellite

In this paper, the use of a three element solution is studied for Internet of Things (IoT) communication from space using Low-Earth Orbit (LEO) satellite. A compact circularly polarized and wide beam-width radiation pattern performance is desired. Impact of miniaturization on frequency bandwidth and peak gain is studied. Simulation results show that antenna performance are strongly degraded for maximal dimension below lambda over 5.