| 摘要 |
In order to provide a means for solving a problem that it provides a signal processing circuit with small circuit area and low power consumption, a signal processing circuit includes the first multiplying means which multiplies the first signal including the first frequency component by the second signal including the second frequency component and thereby outputs the third signal, the second multiplying means which multiplies the first signal by the fourth signal of the second frequency whose phase is lagging equals to the first phase difference relative to the second signal and thereby outputs the fifth signal, the third multiplying means which multiplies the first signal by the sixth signal of the second frequency whose phase is lagging equals to the second phase difference relative to the second signal and thereby outputs the seventh signal, the first adding means which adds the third signal with the first weight, the fifth signal with the second weight and the seventh signal with the third weight respectively and a signal generating means which controls the first phase difference and the second phase difference based on a control signal and thereby outputs the second signal, the fourth signal and the sixth signal. |
