What is the difference between Ka band and Ku band

　　The Ka band is a part of the microwave band of the electromagnetic spectrum, with a frequency range of 26.5-40GHz. Ka represents K-above, in other words, the band is directly above the K-band. The Ka band, also known as the 30/20 GHz band, is commonly used for satellite communication.

　　The disadvantage of Ka band is that it has significant rain attenuation and high requirements for devices and processes. In the Ka frequency band, the antenna size of Ka user terminals is mainly limited not by antenna gain, but by the ability to suppress interference from other systems. The KU band is a live satellite frequency band.

　　The KU band refers to a frequency band lower than the K-band frequency under the IEEE 521-2002 standard. The KU band typically ranges from 10.7 to 12.75 GHz in the downlink and from 12.75 to 18.1 GHz in the uplink.

　　1. Due to different frequency resources, ku has less available bandwidth than ka

　　2. Different antenna gains determine that ka can be used with smaller wells

　　3. Different resistance to rain attenuation, the higher the frequency, the worse the resistance to rain attenuation

　　4. Different satellite designs, the internationally popular KA satellites all use spot beam design, requiring beam switching within the same satellite. Ku usually has a large beam, and there is no need to switch under the same satellite

　　5. Spot beams can be beam multiplexed, increasing bandwidth utilization and reducing the cost per unit bandwidth

　　6. Satellite companies operate differently, with Ku often renting MHz and users building their own platforms. Ka rents Mbps, and users only buy terminals to access the network.

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