Low-Profile Lightweight X-Band PDHT Antenna for Earth Observation Satellite Constellations
Authors:
Luca Di Palma, Davide Maiarelli
Abstract:
This paper presents the design, manufacturing and experimental characterization of a X-band Antenna (XBA)
dedicated to Payload Data Transmission (PDT) for new Satellite platforms that will form constellations for
Earth observation applications. The antenna is characterized by a reduced profile and minimized mass in order
to fulfill stringent accommodation constraints, typical of Low Earth Orbit (LEO) medium-small platforms.
Proposed design is based on a planar array of patch antennas implemented on a sandwich made of composite
materials integrating also the antenna Beam Forming Network (BFN). Conducted and radiated measurements are
carried out at different steps of an extensive space qualification campaign on first antenna model. The
results demonstrate excellent RF performance fully in line with full-wave analysis. Furthermore, proposed
technology is potentially attractive for a wide spectrum of LEO applications at different frequencies (e.g.
GNSS, Inter-Satellite Links).
