To improve Internet connectivity and bring down connection costs for users, targeted areas need to be covered by an ever-increasing number of narrow beams in Ka band, using in each beam the broadest frequency band possible, the total system capacity being directly proportional to the number of beams generated on ground and to the available bandwidth. The rate of carriers to and from users also needs to be increased.
To meet these goals, the THD-Sat R&D project is structured around four complementary technological lines of development, including both the space segment and the telecommunications ground segment:
- Line 1 – Equipment of the payload in Ka band (satellite – users link): increased emitting power, larger antenna diameters, increased bandwidth and more-compact equipment
- Line 2 – Ground segment and terminals: migration from broadband to fast broadband
- Line 3 – Satellite-to-station links: migration of the satellite-connection stations link from Ka band to Q/V band in order to set aside the Ka band to the link with users
- Line 4 – 5 metre-diameter folding reflector in Ka band
The drawing below shows an illustration for the onboard and ground components of a telecommunication system by satellite.
Line of development of the THD-Sat project