Winds

Wideband Inter-Networking engineering test and Demonstration Satellite, also called Kizuna

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General

Designation	32500 / 08007A
Launch date	23 Feb 2008
Country of origin	Japan
Mission	Telecommunications (experimentai)
Geostationary orbit	see below
Launch vehicle	H2A #21

Will experiment high speed internet such as 155 Mbps (down) and 6 Mbps (up) for households and upto 1.2 Gpbs for offices (5m antenna needed). Tests were successfull with a 45-cm antenna (user) and a 1.2-m antenna (ground station) at 155 Mbps.

In May 2008, 2-way Internet link running at 1.2Gbps each way was achieved!

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Location

Begin	End	Position
L: Mar 2008	Aug 2016	143°E
Aug 2016	Feb 2019	143°E, inclined

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End of life

Out of service	Feb 2019
Cause	Probably EOL, despite orbit being only 35800 km, not a clean junk orbit

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External resources

http://www.jaxa.jp/projects/sat/winds/index_e.html

sat-index articles

Technical data

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Specifications

Prime contractor	JAXA and National Institute of Information and Communications Technology (NICT)
Platform
Mass at launch	4850 kg
Dry mass	2700 kg
Dimension
Solar array
Stabilization	3-axis
DC power	EOL: 5 kW
Design lifetime	5 years

Will test 3 new equipements:
- two new antennas with a Multi-Beam Antenna (MBA, 2.4m) and a Multi-Port Amplifier (MPA). The MBA has 19 beams.

- a new active phased array antenna (APAA, change of coverage area)

- onboard ATM switching router (3 channels at 155 Mbps)

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Ka-band

Main transponders
Backup transponders
Power
Bandwidth
Coverage	3 beams: - MBA to Japan: 9 small beams - MBA to Asia Pacific: Seoul, Beijing, Shanghai, Hong Kong, Manila, Bnagkok, Bangalore, Kuala Lumpur, Singapore, Jakarta - APAA: Hawaii and Sydney
EIRP max
Polarization
Frequencies	Uplink: Downlink:

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