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What is a transponder in satellite communication?

What is a transponder in satellite communication?

The term “satellite transponder” refers collectively to a transmitter-receiver subsystem on board the satellite that processes, amplifies and retransmits a range of frequencies (the transponder bandwidth) to another location/terminal/antenna on the earth.

What is the purpose of transponder in satellite?

The subsystem, which provides the connecting link between transmitting and receiving antennas of a satellite is known as Transponder. It is one of the most important subsystem of space segment subsystems. Transponder performs the functions of both transmitter and receiver (Responder) in a satellite.

What is a transponder in a satellite and why it is used?

A communications satellite’s transponder is the series of interconnected units that form a communications channel between the receiving and the transmitting antennas. It is mainly used in satellite communication to transfer the received signals.

What are types of transponders?

There are three main types of transponders: A, C, and S. Transponder S: sends transponder code, altitude information, to ATC and receive and reports information to other transponders of the same type. Transponders need to have 4096 capabilities.

What is transponder used for?

A transponder is a wireless communications, monitoring, or control device that picks up and automatically responds to an incoming signal. The term is a contraction of the words transmitter and responder.

How does the transponder work?

In a communications satellite, a satellite transponder receives signals over a range of uplink frequencies, usually from a satellite ground station; the transponder amplifies them, and re-transmits them on a different set of downlink frequencies to receivers on Earth, often without changing the content of the received …

How does a transponder work?

A transponder will send an identifying coded signal in response to a transmitted interrogation from a ground-based radar station. An air traffic controller can then view the identified blip on a screen and know who it is and provide direction to the flight crews maintaining adequate separation with other blips.

What is the purpose of a transponder?

A transponder is a wireless communications, monitoring, or control device that picks up and automatically responds to an incoming signal. The term is a contraction of the words transmitter and responder. Transponders can be either passive or active.

What is the function of transponder?

Answer: In a communications satellite, a transponder gathers signals over a range of uplink frequencies and re-transmits them on a different set of downlink frequencies to receivers on Earth, often without changing the content of the received signal or signals.

How many transponders does a satellite have?

A typical satellite has up to 32 Ku-band or 24 C-band transponders, or more for Ku/C hybrid satellites. Typical transponders each have a bandwidth between 27 and 50 MHz.

How many transponder does a satellite have?

The leg of the signal path from the satellite to the receiving Earth station is called the downlink. A typical satellite has up to 32 Ku-band or 24 C-band transponders, or more for Ku/C hybrid satellites. Typical transponders each have a bandwidth between 27 and 50 MHz.

How many transponders are in a satellite?

The Boeing 702 series of satellites, in contrast, can have more than 100 transponders, and with the use of digital compression technology each transponder can have up to 16 channels, providing more than 1,600 TV channels through one satellite.

What does a transponder on a satellite mean?

A communications satellite’s transponder is the series of interconnected units that form a communications channel between the receiving and the transmitting antennas.

When does a transponder need to be used?

A combination of a transmitter-receiver system employed together to execute communication between the two is called a transponder. We know that whenever there is a need for a signal to get transmitted or received between the two ends then a need for a channel exists through which the transmission or reception can take place.

What is the role of a satellite in satellite communication?

Basically, in satellite communication, the satellite is an RF repeater which receives information signals from the earth station. The satellite amplifies the information signal taking care of attenuation in the signal and then transmits it to the earth station again.

What is the input filter in satellite communication?

Input filter: This is the first part of satellite communication which receives uplink frequencies (5.9GHz to 6.4GHz) from the earth station. It filters the unwanted distortion from the information signal and drives only 6GHz frequencies to the amplifier.

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