SATELLITE RECEPTION CONVERTER, BLOCK CONVERTER, DOWN CONVERTER AND SATELLITE RECEPTION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a satellite reception system where both a BS signal and a CS right-handed circular polarized wave signal are transmitted through one cable even when the BS signal is superimposed on the CS right-handed circularly polarized wave signal and a receiving end can receiver the signals. SOLUTION: A common antenna 1 receives the BS and CS signals, they are converted into intermediate frequency signals, a block converter 2 converts the frequency of the CS right-handed polarized wave and the BS signal, the CS left-handed polarized wave signal and the CS right-handed polarized wave signal are arranged on a frequency base in this order and they are transmitted to the receiving end through one coaxial cable 24. A down converter 5 provided at the receiving end converts the frequency of the CS right-handed polarized wave into the frequency after the IF conversion and a changeover device 30 selects any of the CS left-handed polarized wave, the BS signal and the CS right-handed polarized waver and provided an output of the selected signal.