Here you will find a C band Ku band Comparison. ITU initially defined C-band to be the first satellite band and its frequencies range from 4Ghz to 8Ghz.
This range of frequency is also used widely by terrestrial microwave backhaul links nowadays, especially because the sub 6GHz band is free of license in many countries all over the world. On the other hand, signals in C-band are less focused compared to higher satellite frequencies such as Ku-Band.
This is due to the longer wavelength in C Band. Less focused signals means that these signals are less affected by rain a phenomenon known as rain fade of satellite signals. The attenuation on C-band signal due to rain fading ranges from 0. Moreover, these less focused signals can provide wider range of coverage. However, these signals need larger dish size e. Unlike C-Band, Ku-band frequencies are dedicated for satellite communication only.
This solves the problem of interfering with terrestrial microwave backhaul links. Moreover, Ku-Band is characterized by its high powered signals compared to C-band. Thus, smaller dishes can be used to achieve the same distance as C-band and the KU band radio transmitter also requires less power. But did you know, the reliability of your connection can be affected by the frequency used?
The Ka-band has emerged as the next big thing in satellite technology in recent years, representing a real alternative to the well-established Ku-band. One major difference is the frequency of each band, which affects the quality of the connection provided. Ku-band uses frequencies in the 12 to 18 GHz range, while Ka-band uses frequencies in the With a higher frequency, you can extract more bandwidth from a Ka-band system, which means a higher data transfer rate and, therefore, higher performance.
For example, consider your choice of radio and the quality of music heard from it. The VHF radio would transmit a crisper sound because of its higher frequency.
Lower cost is a major reason why the Ka-band has emerged as a serious alternative to legacy and emerging Ku-band solutions. With a smaller antenna, Ka-band has a lower manufacturing cost and lower transportation cost, which both reduce the purchase price of solutions that use the band.
Meanwhile, the materials required to fix a Ka-band antenna and the labour time needed to install the system are both lower, which also contributes to more favourable CAPEX. Is it true that the Ku band is more resilient to interference caused by heavy rain and snow? The difference is just like an FM radio broadcast being compared with medium wave.
This still holds true today and is a student essential to understanding satellite throughputs. And the headline bandwidth figure usually refers to the transponder bandwidth from the satellites. Now we need to share that out among the many users. You also have to consider a whole host of other factors, such as how big is your antenna? What is the elevation of the satellite above the horizon?
Yes, weather. Both Ku and Ka can suffer from rain fade Ka more than Ku — this is not usually a problem at 35, feet, but high levels of humidity in tropical areas can also affect signals. Taking L-band first. Inmarsat offers its IP-based kbps SwiftBroadband SBB , but its lightweight kbps SB service, with equipment that can easily be fitted into a bizjet, is also popular. A newer High Data Rate HDR waveform, can also provide increased data throughput on conventional aircraft — up to kbps using a full kHz bearer — but, again, only in streaming mode.
To put a spanner in the works, the satellite thats backs up the new air-to-ground European Aviation Network is S-band — around 2. Its speeds are currently unknown, but expected to be in the Mbps range. The higher frequencies mean data throughputs in the region of megabits per second Mbps are possible, compared with kbps with the current L-band SwiftBroadband — up to a x speed increase.
ViaSat also offers its Ka-band in-flight Exede system, which can deliver up to 12 Mbps to each passenger. Each spot beam has a higher power density, hence the higher bandwidths available.
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