Satellite Ka Ku Band

Satellite communication related links.

Satellite ka ku band.

Ka band makes it possible to transmit higher data over same bandwidth compare to ku band. Ka band is used by wildblue and directv. The terms l band ku and ka satellites are bandied around quite freely. Both ku band and ka band signals suffer from rain fade.

Following are the disadvantages of ka band. At 4 ghz c band a 3 meter dish is required to achieve this narrow angular resolution. The band in use refers to the radio frequencies used to and from the satellite. Ku band utilises approximately 12 18ghz and.

The ka band k band above is primarily used for two way consumer broadband and military networks. K band is the frequency range from 18 to 27 ghz. Due to absorption of higher frequency em waves by water droplets ka band suffers from rain fading. Wildblue uses ka band for delivering of satellite broadband and directv uses ka band to supplement their existing ku band channel capacity.

Ranging from 27 ghz to 40 ghz. However the fading is larger for ka band signals owing to their higher frequencies. But do you really know want they mean and the differences between them. Propagation delay is higher due to double hop.

The front end is the usual direct tv ka band lna. Ka band dishes can be much smaller and typically range from 60cm 1 2m 2 to 4 in diameter. Useful gain has been measured from 17ghz to 22ghz. Transmission power is much greater compared to the c x or ku band beams.

L band uses frequencies in the 1 to 2ghz range. Backup since there are a number of satellites currently in orbit which function on the ku band there won t be a problem finding a backup satellite to maintain a continuous link in case the main. Note the inverse linear correlation between dish size and frequency. Honeywell aerospace compares data speeds and more for ku and ka band high speed in flight wi fi solutions.

The direct tv ka lnb has been chopped in half to produce two lna units. Disadvantages of ka band. Ka band is the newest satellite broadcast band. The lna has retained the existing ka band feed and now provides lhc and rhc outputs on sma connectors.

We use cookies to improve website performance facilitate information sharing on social media and offer advertising tailored to your interests. Ku band is best known for its use in satellite broadcast communications. Wavelengths from slightly over one centimeter down to 7 5 millimeters. 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.

The pictures below show the modified lnb. The band is called k a short for k above because it is the upper part of the original nato k band which was split into.