Uplink and downlink frequency in satellite communication pdf

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c) Why uplink frequency is higher than downlink frequency?(1M). At higher frequency attenuation is more hence more power will be required for signal.satellite at a frequency known as the uplink frequency. The satellite receives this signal and re-broadcasts it on a downlink frequency to another ground The uplink frequency is higher than that of the down because the transmit amplifier in the down link has a limited power supply power budget as it is on Abstract This paper has two major parts. In the first part, a brief review of satellite communication is shown by mentioning types of orbit, frequency bands Key point: uplink and down link signals always on different frequencies. ▫ Reason: interference control on ground and at satellite. uplink frequency. The resulting carrier-to-noise density ratio given by Eq. (2) is that which appears at the satellite receiver. 3.12 Downlink.