Ka Band Satellite Frequencies

An influencing factor in the definition of the generic ka band off axis power spectral density psd limits is itu r s 524 9 annex i section 4 5.

Ka band satellite frequencies.

Wavelengths from slightly over one centimeter down to 7 5 millimeters. The first set of starlink satellites will transmit signals solely in ku band frequencies allowing spacex to accelerate deployment of the network while continuing to develop dual ku band and ka. This recommendation attempts to statistically quantify the uplink c n degradation caused by off axis radiation by the. The picture above shows the hughesnet lnb.

Operating in the ka band offers some significant advantages over conventional satellite networks operating in the ku band and lower frequencies. Ka band dishes can be much smaller and typically range from 60cm 1 2m 2 to 4 in diameter. C band satellite will usually will have 5 925 to 6 425 ghz frequency range in the uplink and 3 7 to 4 2 ghz frequency range in the downlink. Transmission power is much greater compared to the c x or ku band beams.

To prevent interferance caused by multiple sites transmitting on the same frequencies government agencies and standards organizations around the globe try to keep the usage organized and often such controls take the form of government regulations which carry the weight. The dro operates at 9 75ghz is. Ku band utilises approximately 12 18ghz and. The band in use refers to the radio frequencies used to and from the satellite.

Ka band satellite frequency reuse. The most popular frequency bands available on satellite are l band s band c band x band ku band k band and ka bands. L band uses frequencies in the 1 to 2ghz range. The k a band pronounced as either kay ay band or ka band is a portion of the microwave part of the electromagnetic spectrum defined as frequencies in the range 26 5 40 gigahertz ghz i e.

A number of weather satellites are also present in geosynchronous orbits. There are a number of radio frequency ranges in use in satellite communications such as c x ku ka and even ehg and v band. Ka band services uses the 26 5 40ghz segment of the electromagnetic spectrum. The lnb was intended to work in the 19 7ghz to 20 2ghz band for satellite based internet as part of the wildblue systems which are sold in the usa and canada.

The other amateur radio oscar satellites operate in vhf uhf range. Due to the higher frequencies of this band it can be more vulnerable to signal quality problems caused by rain fade again acm is used to help rain fade. Not only is more bandwidth available at the higher ka band frequencies ka band antennas have higher gain than antennas of comparable size operating at lower frequencies.