Technologies de rupture pour futures charges utiles de télécommunications Technology disruptions in future communication payloads

نویسنده

  • Jean-Didier Gayrard
چکیده

The market of satellite telecommunications will be shaped by four main trends: democratization, regionalization, digitalization and the use of higher frequency bands. To cope with the economical and technical demands of the market and to compete with the terrestrial networks, operators and manufacturers shall upgrade theirs satellites. The evolution should take two ways: gigantism or adaptation. Both way will requires satellite payloads to evolve from past and present level of complexity that was mainly suited for TV broadcasting and telephone trunking in the Ku and C bands, to a new and higher level of complexity. Anyway innovative and disruptive technologies will be welcome. A first procession of disruptive technologies comes from optical and optoelectronical technologies. The rapid expansion of these techniques in terabit terrestrial networks could also benefit satellite wideband payloads. Large bandwidth, mass savings, flexibility and advanced processing are expected. A second set of disruptions could come from the cold: chill electronics, superconductivity and cryogenics. High temperature superconductors (HTS) allow very low noise front ends, compact and lossless filters. Low temperature superconductors (LTS) used in RSFQ logic integrated circuits give the required computing power for wideband signal processing and analog to digital flash conversion of microwave signals. Digital signal processing will bring also disruption in communication satellites. Digital techniques will enhance every payload processing: beam forming, filtering, routing, linearization, demodulation... Digitized onboard processors will be more flexible, better performing and reconfigurable or upgradable (software radio). Micro-systems (MEMS) should also play leading role in the design of the next payloads. Report Documentation Page Form Approved OMB No. 0704-0188 Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. 1. REPORT DATE 13 JUL 2005 2. REPORT TYPE N/A 3. DATES COVERED 4. TITLE AND SUBTITLE Technologies de rupture pour futures charges utiles de télécommunications (Technology disruptions in future communication payloads) 5a. CONTRACT NUMBER

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تاریخ انتشار 2006