The Ka band (kurz-above band)
The Ka band is a portion of the K band of the microwave band of the electromagnetic spectrum.
Ka-band roughly ranges from 18 to 40 GHz. The 20/30 GHz band is used in communications satellites, downlink 18.3–18.8 GHz and 19.7–20.2 GHz. The term Ka-band is frequently used to refer to the recommended operating frequencies of WR-28 rectangular waveguide, which is 26.5 to 40.0 GHz.
Ka band in future will allow a broader application field in the V-SAT Industry. At the moment only very few capacity possibilities are available in Ka Band.
Those commercial projects available suffer from the global warming and the resulting climatic change.
You will ask why ? Very simple: The increase of rain and stong weather conditions terrible affect service stabilities in KA band. Due to stronger and longer bad weather periods outages of services in KA Band have dramatically increased in the last 3 years.
However it is quite exciting to get more bandwidth out of a smaller required space segment - KA band related services still will have to proof that they really will play a major role in future satellite communication business.
Downlink: 18,3 - 18.8 Ghz / 19,7 - 20,2 GHz
Uplink: 29.5 - 30 GHz
- Provides new fresh satellite capacity, while KU and C Band gets full
- low cost equipment for the mass market
- High affectation by humidity of all kind, in particular rainfall
- not suited for more then "end user type" commercial services
- due to higher frequencies, more accurate produced equipment is needed