| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce an influence of an interference signal, and to highly accurately detect a low jitter. <P>SOLUTION: The pulse reception circuit includes: a template pulse generation circuit 100 for generating a first pulse signal PSA and a second pulse signal PSB of different phases on the basis of a pulse position timing signal PPTS; a first multiplier circuit 210 for multiplying a reception signal INPS received from the outside by the first pulse signal PSA and outputting a first multiplication signal MPA; a second multiplier circuit 220 for multiplying the reception signal by the second pulse signal PSB and outputting a second multiplication signal MPB; a first low-pass filter circuit 310 for taking out a low-frequency component of the first multiplication signal MPA and outputting a first low-frequency signal LPA; a second low-pass filter circuit 320 for taking out a low-frequency component of the second multiplication signal MPB and outputting a second low-frequency signal LPB; and an envelope detection circuit 400 for performing an envelope operation from the first low-frequency signal LPA and the second low-frequency signal LPB and outputting a detection signal OUT. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
