Detection system for frequency difference signal
专利汇可以提供Detection system for frequency difference signal专利检索，专利查询，专利分析的服务。并且PURPOSE:To increase the lock-in range on synchronization with a simple constitution by discriminating the difference between the frequency of the regenerated carrier wave of an input signal and the oscillation frequency of a voltage-controlled oscillator and by controlling a frequency inputted to a base band processing circuit according to the discrimination result. CONSTITUTION:The position of an input signal is detected by phase detectors 22 and 23 from its regenerated carrier wave and applied to COSTAS type base band processing circuit 24, one output signal of which is differentiated by differentiating circuit 25, whose output is applied to mixer 26. The other output of circuit 24 is applied to mixer 26, whose output is applied to amplifier 28 via LPF27. The other output of circuit 24 is amplified by amplifier 29 and then applied to voltage-controlled oscillator 31 via LPF30. One output of circuit 24 obtained by multiplying the input signal by a modulation index and the other output showing the frequency difference between the frequency of the input signal and that of the regenerated carrier wave are applied from mixer 26 to oscillator 31 to increase the lock-in range on synchronization with a simple constitution.，下面是Detection system for frequency difference signal专利的具体信息内容。
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