Table of Contents
What are the basic concept of satellite communications?
Satellite communications involves four steps: An uplink Earth station or other ground equipment transmits the desired signal to the satellite. The satellite amplifies the incoming signal and changes the frequency. The satellite transmits the signal back to Earth.
What is the purpose of satellite communication?
The purpose of communications satellites is to relay the signal around the curve of the Earth allowing communication between widely separated geographical points. Communications satellites use a wide range of radio and microwave frequencies.
Do satellites use microwaves?
Microwaves are used for satellite communication, but it isn’t the only one. A microwave antenna is used for its high frequency, which allows it to carry lots of information, and its short wavelength, which makes it easier to point directly at a receiving antenna.
How is satellite communication used in wireless communication?
A communication satellite is a microwave repeater station in a space that is used for telecommunication, radio and television signals. A communication satellite processes the data coming from one earth station and it converts the data into another form and send it to the second earth station.
What is C band in 5G?
C-band sits between the two Wi-Fi bands, which are at 2.4GHz and 5GHz. It’s slightly above and very similar to the 2.6GHz band that Clearwire and then Sprint used for 4G starting in 2007, and which T-Mobile currently uses for mid-band 5G. Mid-band, including C-band, is the world’s most popular form of 5G.
Do satellites use radio waves?
Satellites communicate by using radio waves to send signals to the antennas on the Earth. The antennas then capture those signals and process the information coming from those signals.
Which signal is used to communicate with a satellite?
Radio waves are used to carry satellite signals. These waves travel at 300,000 km/s (the speed of light). This means that a signal sent to a satellite 38,000 km away takes 0.13 s to reach the satellite and another 0.13 s for the return signal to be received back on Earth.
What is the need of satellite communication?
Satellites provide in-flight phone communications on airplanes, and are often the main conduit of voice communication for rural areas and areas where phone lines are damaged after a disaster . Satellites also provide the primary timing source for cell phones and pagers.
What are the examples of satellite communication?
Examples of military systems that use communication satellites are the MILSTAR, the DSCS, and the FLTSATCOM of the United States, NATO satellites, United Kingdom satellites (for instance Skynet), and satellites of the former Soviet Union.
What is a satellite and how does it work?
A satellite is basically a self-contained communications system with the ability to receive signals from Earth and to retransmit those signals back with the use of a transponder -an integrated receiver and transmitter of radio signals.