| 摘要 |
<p>A clock signal is generated, from a biphase modulated, digital signal, by means of two samples (TF, TB) per symbol interval, T. This pair of samples are spaced at about T / 4. The clock is generated by, firstly, shifting the pair of samples (TF, TB) until one of them (TF) is very close to the zero - crossing point of the biphase signal. The other sample (TB) will then be located at a maximum or minimum. During this procedure, the separation of the two samples remains fixed at T / 4. The separation is then made variable. In this way, TF can track the zero crossing point while TB remains at the maximum or minimum, despite jitter in the incoming signal. <IMAGE></p> |
