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Ka band 26 40 ghz communications satellites uplink in either the 27 5 ghz and 31 ghz bands and high resolution close range targeting radars on military aircraft.
V band satellite communication. This communication was between the u s. In europe ku band downlink is used from 10 7 ghz to 12 75 ghz for direct broadcast satellite services such as astra. Block diagram of a v band block up converter top and a q band. In the last 10 years satellite communication systems have evolved towards constellations with many satellites hundreds and thousands and small satellites orbiting in a large variety of orbits at different altitudes while still using the huge geostationary satellites in the clarke orbit.
However for broadband communications provider advantech wireless the move to q v band is only marginally on the radar. Satellite operator interest in new bands must be expected as they must look so far ahead. Such as the ka band 20 and 30 ghz. 60 ghz is attractive for secure satellite crosslinks because it allows for high data rates narrow beams and lying in a strong absorption band of oxygen provides protection.
With relatively few satellites in orbit in this band there is a wider separation between adjacent satellites making it ideal for comms on the move cotm applications. The x band is used mainly for military communications and wideband global satcom wgs systems. The satellite business for operators especially is a long term one and so future requirements need to be addressed far in advance. 15 1995 the v band at 60 ghz was used by the world s first crosslink communication between satellites in a constellation.
Milstar 1 and milstar 2 military satellites. This in effect will yield faster and more reliable communication devices in the q v band. Downlink 7 25 7 75 ghz. Used for satellite communications.
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