| 摘要 |
PURPOSE: Disclosed is a signal distribution circuit in which received digital CATV signals are branched by a directional coupler into signals flowing in a through direction and signals flowing in a branch direction. CONSTITUTION: The signals output from the directional coupler in the through direction are then fed through an extraction circuit, a variable attenuator, and a wideband amplifier so as to have a desired frequency range and a desired level, and are then fed to a distributor so as to be distributed, for output, into downstream signals to be fed to a downstream tuner and CATV signals to be fed to an analog/digital turner. The signals output from the directional coupler in the branch direction are fed through a band-pass filter and a wide-band amplifier to a distributor so as to be distributed, for output, into VHF signals and FM signals. Upstream signals are fed through an extraction circuit to a terminal at which the CATV signals are received.
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