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SINGLE CABLE VSAT INTERFACE WITH SINGLE CONVERSION ARCHITECTURE FOR RECEIVE AND TRANSMIT
SINGLE CABLE VSAT INTERFACE WITH SINGLE CONVERSION ARCHITECTURE FOR RECEIVE AND TRANSMIT
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机译:具有收发转换功能的单转换架构的单电缆VSAT接口
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摘要
A VSAT system modem has three chips and a block. A first chip generates a modulated carrier signal and a local oscillator signal having a same frequency. A second chip receives the local oscillator signal from the first chip and produces a reference signal. The reference signal and the modulated carrier signal are received by the block, which multiplexes the reference signal and the modulated carrier signal onto a single inter-facility link. The single inter-facility link transmits the modulated carrier signal and the reference signal and provides a received modulated carrier signal to a third chip. The first chip may be a synthesizer/modulator chip, the second chip may be a prescaler chip, the third chip may be a DVB-S2 tuner chip and the block may be a multiplexer. The chips may be standard semiconductor chips. Alternatively, a digital-to-analog converter chip may produce the reference signal.
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