satellitenrundfunksignalempfänger for receiving digital coded satellitenrundfunksignale

摘要

The receiver has a quadrature amplitude modulation (QAM) modulator for converting an elementary data stream, containing several broadcast signals, into a QAM signal in an intermediate frequency (IF) channel. An output converter converts the frequency of the QAM signal to a higher frequency range. The QAM modulator (4) is operated in a special mode in which it provides at its output a derived carrier signal with a defined frequency. This frequency corresponds to the picture carrier frequency of an analog satellite television signal, transmitted in the same IF channel. An Independent claim is included for device for measuring the level of a received digitally coded satellite broadcast signal.