| 摘要 |
PURPOSE: A signal conversion apparatus, differential signal conversion apparatus, and frequency conversion method are provided to eliminate noise by applying coupling signals to an input end of a frequency conversion unit. CONSTITUTION: A frequency converting unit(430) converts a high-frequency signal received by an input end to the output signal of down frequency by responding to an LO(Local Oscillation) frequency signals. A noise elimination unit(410) is connected to the input end of the frequency conversion unit. The noise elimination unit controls the band of the high frequency signal. The noise elimination unit eliminates the capacitance of a parasitic capacitor in the input end. |
