| 摘要 |
PURPOSE: A multi-channel up/down converter is provided to make the size of a device small by reducing the number of parts with managing the multi-channel frequency with a single up/down converter and with arranging it in order of each channel by using the digital signal managing technology. CONSTITUTION: A multi-channel up/down converter includes single up/down converters(100, 200) and digital signal managing portions(160, 260). The frequency signal of the multi-channel is converted up and down by using the single up/down converters(100, 200), the optical band characteristics of which are guaranteed. The frequency of each channel is arranged by using the digital signal managing technology of the digital signal managing portions(160, 260) of a baseband step instead of the frequency arrangement of the established high frequency step. |
