Press Release


Wideband InterNetworking engineering test and Demonstration Satellite "KIZUNA" (WINDS)
Successful Satellite Data Communication at Speed of 622 Mbps
by the Active Phased Array Antenna

May 16, 2008 (JST)

Japan Aerospace Exploration Agency (JAXA)
National Institute of Information and Communications Technology (NICT)

On May 12, the Japan Aerospace Exploration Agency (JAXA) and the National Institute of Information and Communications Technology (NICT) successfully achieved high data rate communication at a speed of 622 Mega bit per second (622Mbps) using the KIZUNA's Ka-band Active Phased Array Antenna (APAA)*1 between Large Aperture Terminal (5 m diameter antenna) in the NICT Kashima Space Research Center and a super high data rate earth station (a 2.4 m diameter antenna) set on a car in Kushiro, Hokkaido. The speed was achieved during the initial functional verification operations of the KIZUNA jointly carried out by JAXA and NICT. It is the fastest speed in the world using active phased array antenna.
The Ka-band APAA covers all of Japan and almost one third of the Earth surface, thus it is possible to widely provide a broadband environment to the Asia and Pacific region. The APAA's function in which the APAA can randomly change its beam directions is expected to bridge the information gap between urban and rural areas and to secure communication lines with previously inaccessible islands and disaster-stricken areas.

Outline of Communication Using Active Phased Array Antenna (APAA)

*1) APAA is an antenna whose beam direction can be changed electronically every 2 milliseconds. Its communication area covers almost one third of the Earth's surface.