AUSGANGSLEISTUNGS-STEUERUNG EINES MIT TRANSPONDER VERSEHENEN KOMMUNIKATIONSSYSTEMS

摘要

1524946 Automatic control of power WESTINGHOUSE ELECTRIC CORP 9 Feb 1977 [17 Feb 1976] 05292/77 Heading G3R [Also in Division H4] In a satellite radio system the input power to the satellite 20 is regulated by making use of a small signal-dependent non-linearity of the satellite receiver-transmitter. At the transmitter an additional carrier is provided typically 10dB down in power and 10kHz displaced in frequency, and an intermodulation component with the main carrier produced by the satellite is monitored at a receiver and used to produce a control signal fed back to the transmitter via 30.