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The dynamics of phase locked loops (PLLs) are heavily influenced by the right choice of the loop filter parameters. A new approach for determining these parameters to meet the specification of telecommunications standards optimally is presented in this paper. The most common optimization criterium is to minimize the integral error over time of the step response. In a telecommunications system, it...
A novel calibration scheme for predistortion ΣΔPLLs is proposed in this paper. In contrast to present calibration algorithms this technique offers a digital representation of the high frequency phase characteristic. The architecture uses minimum chip area by synchronously sampling the data content of an asynchronous divider chain. Using this technique to detect the phase difference during a step response...
A novel calibration scheme for predistortion SigmaDelta PLLs is proposed in this paper. In contrast to present calibration algorithms this technique detects the integral phase variation of the loops step response. The architecture uses minimum chip area by synchronously sampling the data content of an delay locked loop. Using this technique to detect the phase difference during a step response allows...
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