| 摘要 |
PROBLEM TO BE SOLVED: To easily flatten the frequency characteristics of a signal to be outputted to a trunk line and to easily adjust frequency characteristics even in the head end of a multinode and a multiunit by providing a frequency characteristics compensating circuit for compensating the frequency characteristics of a signal to be distributed. SOLUTION: A frequency characteristic compensating circuit 1 is provided between the A and B points of a distributor circuit, that is, a part in which a signal to be distributed is allowed to flow. This compensating circuit 1 is constituted of a resistor, a capacitor, a coil and a varicap capacitor, and this circuit 1 is provided with frequency characteristics opposite to the frequency characteristics of a coaxial cable. The frequency characteristics are changed by adjusting the capacitance of the varicap capacitor. Thus, the deterioration of the frequency characteristics accompanied with the change of the coaxial cable length is compensated regardless of the cable length, and the frequency characteristics of a signal at the point B is made flat. |
