C Band Satellite Transponder Block Diagram

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

C band satellite transponder block diagram.

As shown in the figure satellite transponder receives signal of say 6175 mhz from the earth it converts the same to 3950 mhz by substracting it using lo of 2225 mhz. It receives uplink signal from the satellite. This is for c band satellite band. Extended c band is most popular because of less propagation problem.

The communication is through a telecommunication link established between the control station on the ground and the satellite. It receives uplink signal from the satellite antenna and transmits downlink signal to the satellite antenna. The number of transponders or channels indicates the capacity of the satellite. The basic block diagram of an vsat earth station transmitter is as shown in fig 2.

8 m 10 m. Satellite transponder does this operation. Usually in geo operate at the c band around 6 ghz. Extended c band communications satellite wi ll be examined briefly here.

The block diagram of transponder we can easily understand the operation of transponder from the block diagram itself. Why do some satellites have two transponders while others have twenty four. The ttc transponder on the spacecraft plays the role of radio frequency interface with the ground. The block diagram of transponder is shown in below figure.

Block diagram of a typical ttc transponder. Duplexer is a two way microwave gate. Rain attenuation and sky noise is low at 4 ghz downlink frequency of c band. Satellite communication system block diagram.

Explain simplified block diagram of satellite transponder 1 single convention in c band 2 double conversion in ku band. An input low noise amplifier lna designed to. An input band limiting device an input band pass filter. The block diagram of transponder is shown in below figure.

A transponder is typically composed of. The two way communication is established with the help of transponder a com satellite has multi transponder per satellite has in creased over the year a satellite with 2 transponder can support a signal t v channel or 240 telephone lines a satellite with 48 transponder can accommodate 4000t. So it is possible to build a receiving system. Signals traveling from earth to satellites must travel through the atmosphere.

A block diagram of a transponder. 1 duplexer is a two way microwave gate. The function of each block is mentioned below. Maurizio di paolo emilio.

It is mainly used in satellite communication to transfer the received signals. May 2012 dec 2012. We can easily understand the operation of transponder from the block diagram itself.