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Multiple channel upconverter having adjacent channel output and method of implementing the same
Multiple channel upconverter having adjacent channel output and method of implementing the same
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机译:具有相邻信道输出的多信道上变频器及其实现方法
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摘要
An upconverter unit for a cable television system upconverts multiple channel signals from a common intermediate frequency to a VHF or UHF signal ready for transmission to subscribers. The two-stage upconverter provides a first stage in which different channel signals are upconverted to different frequencies which are spaced apart by same frequency difference characteristic of different channels in the cable system. A second stage of the upconverter uses a common oscillator signal to convert the various channel signals from the first stage to the frequencies at which they will be transmitted over the cable system.
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