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IEICE TRANSACTIONS on Electronics

Evaluation of Digitally Controlled PLL by Clock-Period Comparison

Yukinobu MAKIHARA, Masayuki IKEBE, Eiichi SANO

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Summary :

For a digitally controlled phase-locked loop (PLL), we evaluate the use of a clock-period comparator (CPC). In this PLL, only the frequency lock operation should be performed; however, the phase lock operation is also simultaneously achieved by performing the clock-period comparison when the phases of the reference signal and the output signal approach each other. Theoretically a lock-up operation was conducted. In addition, we succeeded in digitizing a voltage controlled oscillator (VCO) with a linear characteristic. We confirmed a phase lock operation with a slight loop characteristic through SPICE simulation.

Publication
IEICE TRANSACTIONS on Electronics Vol.E90-C No.6 pp.1307-1310
Publication Date
2007/06/01
Publicized
Online ISSN
1745-1353
DOI
10.1093/ietele/e90-c.6.1307
Type of Manuscript
Special Section LETTER (Special Section on Analog Circuits and Related SoC Integration Technologies)
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