DEVICE FOR CHANGING-OVER HIGH FREQUENCY SIGNAL

摘要

PROBLEM TO BE SOLVED: To transmit an input signal selected in accordance with a control signal to an output terminal from where the control signal is transmitted by connecting two or more input terminals to the plural output terminals and supplying the signals selected from two or more input signals to the output terminal. SOLUTION: Electric wave collected by a parabola antenna 31 is collected to a current collecting part, comparators 32 and 33 take out a vertical polarized wave component or a horizontal polarized component inside an antenna receiving signal in accordance with the level of a power source voltage and it is given to the input terminals 21-1 and 21-2 of a high frequency signal change-over device 10 through a coaxial cable. The device 10 distributes two input signals into four by two distributing circuits so as to give them to the two change-over contact points of the respective four change-over switches. The change-over switches execute a change-over operation in accordance with the control signal which is given from the tuners 34-1 to 34-4 through a signal passage and the output terminals 22-1 to 22-4, take out the vertical polarized signal or the horizontal polarized signal and give it to receivers 35-1 to 35-3 via the tuners 34-1 to 34-4.