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This paper outlines the technical choices and industrial organization set in order to offer, in the frame of the GLOBALSTAR 2 program, a continuity of service in a short schedule with challenging cost objectives.
The simulation presented hereafter show that active AFSR may be a good alternative to direct radiating arrays receive antennas on the secondary coverages considered. It offers the possibility to have a lower number of controls, while fulfilling the specification, even in case of failure.
This paper describes recently developed or under development telecommunication Flight Model Space Antennas at Thales Alenia Space France. It concerns the most relevant products for CIEL 2, W2A and GLOBALSTAR 2 programs. They all correspond to multi- beam antenna subsystem operating in L, S and Ku-bands.
This paper deals with Ku-band Transmit (TX) reconfigurable antennas developments supported by CNES, in the frame of FLexible Innovative Payload (FLIP) Project.
The feasibility of printed antennas which meet all the criteria for satellite communications antennas is considered. These criteria are a bandwidth greater than 20% for a VSWR of less than 1.5, crosspolar level lower than -30 dB over 20 degrees solid angle, and gain better than 8 dB throughout the bandwidth.<<ETX>>
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