Design Considerations of Isoflux Array Antenna for LEO Satellite PNT Service

Seong-Bok Park*, Sang-Jae Cho, Min-Gyoung Cho, Hyung-Min So, Young-Bum Park

This paper analyzes key design parameters for isoflux array antennas used in Low Earth Orbit (LEO) satellite-based Positioning, Navigation, and Timing (PNT) services. The study demonstrates how the antenna's Field of View (FOV), ground coverage diameter, and gain pattern vary with orbit altitude, signal elevation angle, and frequency. These findings offer valuable insights into performance trade-offs, providing benchmark results to guide future research and design efforts. Ultimately, this work establishes a foundation for enhancing the reliability and efficiency of LEO satellite based PNT services.

Keywords: LEO satellite, isoflux array antenna, FOV