C Band Satellite Transponder Block Diagram

Maurizio di paolo emilio.

C band satellite transponder block diagram. Block diagram of a typical ttc transponder. Usually in geo operate at the c band around 6 ghz. A block diagram of a transponder. Extended c band communications satellite wi ll be examined briefly here.

The basic block diagram of an vsat earth station transmitter is as shown in fig 2. An input band limiting device an input band pass filter. Explain simplified block diagram of satellite transponder 1 single convention in c band 2 double conversion in ku band. Rain attenuation and sky noise is low at 4 ghz downlink frequency of c band.

The communication is through a telecommunication link established between the control station on the ground and the satellite. A transponder is typically composed of. We can easily understand the operation of transponder from the block diagram itself. Each transponder is amplified by either a travelling wave tube am plifier twta or a solid state power amplifie r.

The block diagram of transponder is shown in below figure. The ttc transponder on the spacecraft plays the role of radio frequency interface with the ground. So it is possible to build a receiving system. The function of each block is mentioned below.

An input low noise amplifier lna designed to. The same is explained below with the use of the 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. The block diagram of transponder is shown in below figure.

The block diagram of transponder we can easily understand the operation of transponder from the block diagram itself. 8 m 10 m. 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. 1 duplexer is a two way microwave gate.

Signals traveling from earth to satellites must travel through the atmosphere. It is mainly used in satellite communication to transfer the received signals. 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. Extended c band is most popular because of less propagation problem.

Satellite communication system block diagram. It receives uplink signal from the satellite. Duplexer is a two way microwave gate. The function of each block is mentioned below.

May 2012 dec 2012. Why do some satellites have two transponders while others have twenty four. This is for c band satellite band.