发明名称 |
Phase discriminator with a phase compensation circuit |
摘要 |
A differential phase discriminator includes a phase compensation circuit to compensate for timing drift and error for recovering timing information in a digital phase lock loop. The differential phase discriminator uses a differential phase detector to compute the phase difference of two consecutive frequency domain signal samples. The phase compensation circuit determines a phase correction term by computing the difference between the absolute values of the real and imaginary parts of a frequency domain signal sample. A weighting factor is computed by adjusting the sum of the absolute values of the real and imaginary parts of the frequency domain signal sample with a ratio adjustment factor. A phase compensation value is then computed by multiplying the phase correction term by the weighting factor. The phase compensation value is added to the uncorrected output of the differential phase detector. |
申请公布号 |
US6937684(B2) |
申请公布日期 |
2005.08.30 |
申请号 |
US20010970254 |
申请日期 |
2001.10.02 |
申请人 |
SILICON INTEGRATED SYSTEMS CORPORATION |
发明人 |
TZOU CHING-KAE;LIN YUNG CHING |
分类号 |
H03L7/085;H04L27/00;H04L27/38;(IPC1-7):H03D3/24 |
主分类号 |
H03L7/085 |
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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