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Modeling and Filtering Double-Frequency Jitter in One-Way Master–Slave Chain Networks

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3 Author(s)
Bueno, A.M. ; Dept. de Eng. de Telecomun. e Controle, Univ. de Sao Paulo, Sao Paulo, Brazil ; Ferreira, A.A. ; Piqueira, J.R.C.

One-way master-slave (OWMS) chain networks are widely used in clock distribution systems due to their reliability and low cost. As the network nodes are phase-locked loops (PLLs), double-frequency jitter (DFJ) caused by their phase detectors appears as an impairment to the performance of the clock recovering process found in communication systems and instrumentation applications. A nonlinear model for OWMS chain networks with P+1 order PLLs as slave nodes is presented, considering the DFJ. Since higher order filters are more effective in filtering DFJ, the synchronous state stability conditions for an OWMS chain network with third-order nodes are derived, relating the loop gain and the filter coefficients. By using these conditions, design examples are discussed.

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Circuits and Systems I: Regular Papers, IEEE Transactions on  (Volume:57 ,  Issue: 12 )