NEC space activities for telecommunication satellite system - APRSAF

2.NEC activities of communication satellites (heritages)Five development elements2. Ka-band Multi Port Amplifier (MPA)5. High efficiency solar paddle4. Base-band Switching SystemLaunch Date Feb. 23, 2008OrbitMassElectrical PowerAttitude ControlSystem OutlineGEO (143E)1. Ka-band Multi-beam Antenna(MBA)3. Ka-band Active Phased Array Antenna (APAA)2400 kg (DRY)8 kW @EOL4 kW(for Mission payload)3 axis Stabilization±0.05deg.(R/P)±0.15deg.(Y)WINDS (KIZUNA)Wideband inter-Networking EngineeringTest and Demonstration satelliteLaunch : Feb. 23, 2008 High Speed Space communication. Max Receiving : 155 Mbps Max Transmitting :- 6 Mbps for house-holds with 45-cmaperture antennas- 1.2 Gbps communication for offices with5-m antennas .Data Relay Bent Pipe Link Re-Modulating Link (ATM)Frequency U/L:27.5~28.6GHz D/L:17.7~18.8GHzAntennaBeamsData Rate(c) JAXASatellite EIRPSatellite G/TSpecification Communication LinksFixed Beams (MBA) for Japan, prospective cities in Asia regionScanning Beam (APAA) for the other areaMax 1.2 Gbps,(622Mbps×2)69.6 dBW (MBA, 24.6dBW at MPA output)54.6 dBW (APAA, at edge of FOV )> 17.9 dB/K (MBA, domestic antenna)> 7.1 dB/K (APAA, at edge of FOV )U/L: 1.5, 6, 24, 51, 155 MbpsD/L: 155 MbpsPage 13This document contains proprietary information, and except with written permission of NEC Corporation ,such information shall not be published or© NEC Corporation 2010disclosed to others, or used for any purpose and the document shall not be duplicated in whole or in parts.