| 摘要 |
PURPOSE:To obtain a synchronization detection circuit with simplified circuit configuration and to suppress the addition of a circuit to a minimum by sharing a square circuit in a clock reproduction circuit to extract a clock component used in modulation. CONSTITUTION:The output signal S (t) of the square circuit 201 in the clock reproduction circuit 200 is supplied to a detection circuit 302 in the synchronization detection circuit 300 via a band-pass filter 202 provided with the same center frequency as a clock frequency used in MSK modulation. A synchronization detection signal SY can be obtained by performing the level discrimination of the output signal by a level discrimination circuit 303. |
