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 .
Read moreHow many transponders does a satellite have?
A typical satellite has up to 32 K u-band or 24 C-band transponders, or more for K u/C hybrid satellites . Typical transponders each have a bandwidth between 27 and 50 MHz.
Read moreHow many channels does a transponder have?
Each satellite transponder can carry 2 channels of regular (analog) TV programs, or 6 channels of digital TV programs .
Read moreWhat is the speed of satellite signals?
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.
Read moreWhat are transponders in satellite systems?
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 .
Read moreHow much bandwidth accommodate for each transponder in C band?
The bandwidth allocated for C band service is 500 MHz , and this is divided into sub bands, one for each transponder. A typical transponder bandwidth is 36 MHz, and allowing for a 4-MHz guard band between transponders, 12 such transponders can be accommodated in the 500-MHz bandwidth.
Read moreWhat is transponder frequency?
In a transponder the transmit carrier frequency is derived from the received signal . The frequency linkage allows an interrogating ground station to recover the Doppler shift and thus infer range and speed from a communication signal without allocating power to a separate ranging signal.
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