File:2014 2 26 PDs n PFD free running waveforms.pdf
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Description2014 2 26 PDs n PFD free running waveforms.pdf |
English: Simulation with 3K time points of the waveforms inside a Phase and Frequency Detector of the bang-bang type. The detector is driven by one clock (input +) at 1 GHz and by a clock at 1GHz-398 ppm. After 1850 simul samples, the input clock becomes noisy with the addition of a sinusoidal phase jitter of 0.3 rad of amplitude and of 10e+10 rad/sec of angular frequency. Note the typical pattern of the slips of the two Phase detectors driven by I(lead) and Q(lag) that are orthogonal square waves. The wave of the Q(lag) detector seems to lead the other: this is because the frequency difference is negative. The PFD is wired so that its output is low if the negative input receives a lower frequency than the positive input, and viceversa. |
Date | |
Source | Own work |
Author | BORGATO Pierandrea |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:02, 26 February 2014 | 1,579 × 679 (668 KB) | BORGATO Pierandrea (talk | contribs) | User created page with UploadWizard |
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Author | Pierandrea Borgato |
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Date and time of digitizing | 15:42, 26 February 2014 |
Software used | Calc |
Conversion program | Mac OS X 10.9.1 Quartz PDFContext |
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Page size | 758.672 x 326.001 pts |
Version of PDF format | 1.3 |