Satellite block transmission using wideband fiber optic links

摘要

A system for transmitting one or more blocks of information signals from the output of a low noise amplifier associated with a satellite antenna to a remote headend or terminal is disclosed. Block conversion is used to translate the signal spectrum from the satellite transmission band, typically 3.7-4.2 GHz, to a frequency range of 0.6-1.1 GHz. A wideband fiber optic link is used to extend the link length from a maximum of 300 feet when coaxial cable is used to approximately 1 km (3281 feet). The output of the optical receiver in the fiber optic link is converted to the original satellite transmission band so that a standard satellite receiver can be used to demodulate the signal. Alternatively, a satellite receiver which interfaces directly at the 0.6- 1.1 GHz can be used. The system also may include means to synchronize frequency conversion at each end of the fiber optic link. The high quality of the system lends itself to application in television receive- only as well as date communications.