Uplink And Downlink Frequency In Satellite Communication

What are uplink and downlink.

Uplink and downlink frequency in satellite communication.

High frequency means higher attenuation. I was able to gather some answers as to why is so. Used for satellite communications. Ka band 26 40 ghz communications satellites uplink in either the 27 5 ghz and.

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 communication going from a satellite to ground is called downlink and when it is going from ground to a satellite it is called uplink. 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. Pertaining to radiocommunication service a downlink dl or d l is the portion of a feeder link used for the transmission of signals from a space radio station space radio system or high altitude platform station to an earth station.

5925 mhz to 6425 mhz is uplink band where as 3700 to 4200 mhz is downlink band. In europe ku band downlink is used from 10 7 ghz to 12 75 ghz for direct broadcast satellite services such as astra. Primarily used for satellite communications for full time satellite tv networks or raw satellite feeds. The direction from vsats to sallite is known as uplink and the direction from satellite to vsats is known as downlink.

6ghz band frequency is used for uplink and 4ghz frequency band is used for downlink in c band satellite communication operation. When an uplink is being received by the spacecraft at the same time a downlink is being received by earth the communication is called two way. The satellite transmitter generates a signal that would jam its own receiver. But my seniors in my company seem not to be satisfied with the below answers.

Trying to receive and transmit an amplified version of the same uplink waveform at same satellite will cause unwanted feedback or ring around from the downlink antenna back into the receiver. If both uplink and downlink shared the same frequency. So lets suppose that bts as in case of gsm transmits using low frequency on the downlink.