发明名称 |
Circuit for extracting carrier signals. |
摘要 |
<p>In circuits for reproducing carriers for continuous phase modulation having a rational modulation index these signals are multiplied in a multiplier for producing a harmonic, with unique phases occurring due to phase addition irrespective of the information to be conveyed. This harmonic is selected by means of a bandpass filter and supplied to a divider for reproducing the carrier signal. However, as the desired phases only occur at certain instants the effect of jitter in the reproduced carrier signal is undesirably high. Jitter suppression is considerably improved by supplying to the bandpass filter only the instantaneous values of the virtually desired phases occurring at the specific instants.</p> |
申请公布号 |
EP0273504(A1) |
申请公布日期 |
1988.07.06 |
申请号 |
EP19870202438 |
申请日期 |
1987.12.07 |
申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
MUILWIJK, DIRK |
分类号 |
H04L27/14;H04L27/20;H04L27/227;(IPC1-7):H04L27/22 |
主分类号 |
H04L27/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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