Ku-band refers to frequencies from 12 GHz to 18 GHz, while Ka-band refers to frequencies from 26.5 GHz to 40 GHz. Increasing the frequency on a Ka-band system can get more bandwidth, which means a higher data transfer rate.
Compared to other bands (like L-band), Ku-band is generally more cost-effective for end users and allows them to operate smaller antennas to a more focused beam due to its higher frequency.
Ku-band satellite antennas are smaller than C-band antennas, but they are susceptible to rain fade during heavy rainfall (their signals can be affected by rain absorption). Ku-band is commonly used for broadcast and VSAT (Very Small Aperture Terminal) systems on ships and vessels.
Ku-Band has been used in different applications for many years and became more widespread with the appearance of VSATs (Very Small Aperture Terminal). This is due to its efficiency, reliability, and the use of small equipment, which reduces complexity and logistics costs, as well as the installation of the services.
Ku-band can cover an entire continent with just a single beam, while Ka-band has a smaller range so that multiple beams can cover an entire country. Ka-band’s more limited range isn’t a problem if the connectivity provider’s infrastructure can adequately cover a customers’ location.
Ka-band refers to a range of frequencies from 27 GHz to 40 GHz, as defined by IEEE (The Institute of Electrical and Electronics Engineers). The main use of Ka-band is communication with satellites. Satellite communication uplink frequencies are usually around 27 GHz or 31 GHz.
Ka-band provides satellite internet services with high data transfer rates by using smaller receiving antennas with a longer wavelength than those in other electromagnetic spectrum frequencies. More power must be transmitted to establish a link in Ka-band satellite frequency than in other bands since Ka-band is more sensitive to atmospheric phenomena.
Ka-band provides high data transfer rates and a wide bandwidth because of its high-frequency bands, which is why it is widely used.
With Ka-band-focused spot beams or multiple beams, the same frequency band can be reused, which boosts satellite communication system coverage and capacity.
Ka-band offers several advantages, including wide bandwidth, which is double that of Ku-band and five times wider than C-band. Ka-band wavelength is smaller, which means that its components, antennas, and systems are all smaller as well.
Wavelengths are smaller at higher frequencies, allowing proportionally smaller, lightweight, and often more cost-effective terminals to be operated. Their smaller physical dimensions allow Ka-band SATCOM to be made available to newer markets, such as manpacks and on-the-move platforms.
The use of narrower, more focused Ka-band spot beams provides higher equivalent isotropic radiated power (EIRP), greater signal gain (G/T), and thus, better signal link quality or higher data rates for smaller terminals.