| 摘要 |
PROBLEM TO BE SOLVED: To reduce the sampling speed of an A/D converter without synchronization between a radio pulse transmitter and a radio pulse receiver.SOLUTION: A radio pulse receiver 1A includes: an integrator 11 for integrating each received pulse signal at a speed according to the pulse width of the pulse signal; a comparator 12 for determining whether or not the intensity of a signal S3, having intensity according to the integrated value obtained by integration, is a preset threshold or greater; a phase adjustment circuit 13 and an integration period set circuit 14, for controlling, based on a signal S4 of the result of comparison with the signal S3, the integrator 11 to have an integration period equal to the pulse interval of the pulse signal; a hold circuit 15 for holding the signal S3; and an A/D converter 16 for A/D converting a signal S5 after the hold at a speed according to the pulse interval. |
