Affiliations: Alenia Aerospazio, Divisione Spazio, Via Saccomuro 24, 00131 Roma, Italy | Dipartimento di Ingegneria Elettronica, Università di Roma ‘Tor Vergata’, Via di Tor Vergata 110, 00133 Roma, Italy
Abstract: This paper reports on a satellite mobile‐multimedia system using both Ka‐band and EHF, both for the fixed and the mobile user, which has been defined in Europe to support the UMTS satellite component. The system includes a terrestrial broadband communications component, and an aeronautical broadband communications component. Four types of terminals, characterized by different allowable data rates, are foreseen to cope with different service requirements. The paper describes the system architecture, the payload concept, the terminals typologies, and provides radiolink design results.