PULSE RECEIVING CIRCUIT, PULSE RECEIVING METHOD AND PULSE WIRELESS COMMUNICATION DEVICE
First Claim
1. A pulse receiving circuit which receives a receiving signal from the outside, comprising:
- a template pulse generating circuit which generates a first pulse signal and a second pulse signal having phase different from that of the first pulse signal based on a pulse position timing signal;
a first multiplying circuit which multiplies the receiving signal by the first pulse signal and outputs a first multiplication signal;
a second multiplying circuit which multiplies the receiving signal by the second pulse signal and outputs a second multiplication signal;
a first low band pass filtering circuit which extracts low frequency component from frequency components of the first multiplication signal and outputs a first low frequency signal;
a second low band pass filtering circuit which extracts low frequency component from frequency components of the second multiplication signal and outputs a second low frequency signal; and
an envelope detection circuit which performs envelope calculation by using the first low frequency signal and the second low frequency signal and outputs a detection signal.
3 Assignments
0 Petitions
Accused Products
Abstract
A pulse receiving circuit which receives a receiving signal from the outside includes: a template pulse generating circuit which generates a first pulse signal and a second pulse signal having phase different from that of the first pulse signal based on a pulse position timing signal; a first multiplying circuit which multiplies the receiving signal by the first pulse signal and outputs a first multiplication signal; a second multiplying circuit which multiplies the receiving signal by the second pulse signal and outputs a second multiplication signal; a first low band pass filtering circuit which extracts low frequency component from frequency components of the first multiplication signal and outputs a first low frequency signal; a second low band pass filtering circuit which extracts low frequency component from frequency components of the second multiplication signal and outputs a second low frequency signal; and an envelope detection circuit which performs envelope calculation by using the first low frequency signal and the second low frequency signal and outputs a detection signal.
9 Citations
20 Claims
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1. A pulse receiving circuit which receives a receiving signal from the outside, comprising:
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a template pulse generating circuit which generates a first pulse signal and a second pulse signal having phase different from that of the first pulse signal based on a pulse position timing signal; a first multiplying circuit which multiplies the receiving signal by the first pulse signal and outputs a first multiplication signal; a second multiplying circuit which multiplies the receiving signal by the second pulse signal and outputs a second multiplication signal; a first low band pass filtering circuit which extracts low frequency component from frequency components of the first multiplication signal and outputs a first low frequency signal; a second low band pass filtering circuit which extracts low frequency component from frequency components of the second multiplication signal and outputs a second low frequency signal; and an envelope detection circuit which performs envelope calculation by using the first low frequency signal and the second low frequency signal and outputs a detection signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A pulse receiving method of receiving a signal from the outside comprising:
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generating a first pulse signal based on a pulse position timing signal; multiplying the receiving signal by the first pulse signal; outputting a first multiplication signal; extracting low frequency component from frequency components of the first multiplication signal; outputting a first low frequency signal; generating a second pulse signal having phase different from that of the first pulse signal based on the pulse position timing signal; multiplying the receiving signal by the second pulse signal; outputting a second multiplication signal; extracting low frequency component from frequency components of the second multiplication signal; outputting a second low frequency signal; performing envelope calculation by using the first low frequency signal and the second low frequency signal; and outputting a detection signal based on the result of envelope calculation.
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Specification