| 摘要 |
PURPOSE:To remarkably reduce distortion component by making a waveform of noise component which has been brought to sampling hold, pass through a phase- shifting circuit having not only a prescribed delay amount in the low frequency but also a prescribed phase characteristic in high frequency. CONSTITUTION:An impulsive noise component contained in a detection output signal of the receiver is brought to the sampling hold circuits 2, 3, and this signal which has been brought to sampling hold is delayed by the first phase-shifting means 8, and also its phase characteristic is varied. Also, a pulse signal corresponding to the period when the sampling hold means 2, 3 execute the sampling hold is led out, this pulse signal is delayed by a prescribed time by the second phase-shifting means 6, and also its phase characteristic is varied. And, the impulsive noise component is removed by compounding 4 the output of the first phase-shifting means 8 and the output of the second phase-shifting means 6. |
