Page 51 - SATELLITE AND RADAR COMMUNICATION SYSTEM

Earth station transmitter

 Modulator: converts the input baseband signals to an FM, PSK or QAM

modulated frequency.
 Up-converter: converts the intermediate frequency (IF) to an
appropriate carrier frequency (RF)

 High Power Amplifier (HPA): provides adequate input sensitivity and
output power to propagate the signal to the satellite transponder.

Figure 2.15: Block diagram of earth station transmitter

Earth station receiver

 Low noise amplifier (LNA): amplifies the received signal.
 Down converter: converts the received RF signal to an IF.

 Demodulator: detects the information signal and send to the
appropriate baseband outputs

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Figure 2.16: Block diagram of earth station receiver

Satellite System Elements