Low cost compact terrestrial antenna for Space LPWAN communication

In this paper, the use of a three element solution is studied for Low-Power Wide Area Network (LP-WAN) communication from space. A compact size with RHCP and wide beam-width radiation pattern performance is desired. The three element structure is compared with a quadri-fillar solution in term of frequency bandwidth, radiation pattern beamwidth and efficiency to target a lowcost implementation. Results show that tri-fillar and quadri-fillar are very similar in term of performance, and the choice will be mainly guided by the terminal shape and feeding circuit technology