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Circuit for reproducing reference carrier

阅读:828发布:2023-05-05

专利汇可以提供Circuit for reproducing reference carrier专利检索,专利查询,专利分析的服务。并且PURPOSE:To minimize the effect of DC drift component caused by temperature change, etc., by reducing the number of sections connected to DC in a base band processing section. CONSTITUTION:When, for example, a receiving 4-phase PSK modulated wave inputted into an input terminal 1 has a DC component, a signal, from which the DC component and DC drift component caused by temperature change, etc., are removed and which is proportional to sin2theta, is obtained from a high-pass filter 12 and sin4theta is obtained from an EX-OR 9. When the 4-phase PSK modulated wave is exclusively composed of DC components, the sin2theta from a multiple component extracting means 14 is blocked by the high-pass filter 12. Therefore, only cos2theta from squared value output waveform converting means 15 is inputted into the EX-OR 9 and a signal proportional to the cos2theta is outputted. In this case this is sufficient to make the operation because the receiving signal is exclusively composed of DC components.,下面是Circuit for reproducing reference carrier专利的具体信息内容。

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