Fifth-generation cellular transceivers operating in the millimeter-wave band require a local oscillator in the tens of gigahertz range, with an absolute jitter below 100 fs rms. In recent years, bang-bang digital and sampling analog phase-locked loops have been demonstrated to be the practical alternatives to conventional charge-pump ones, achieving lower jitter and power consumption in nanoscale CMOS processes. The adoption of those architectures in high-performance fractional-N frequency synthesis has been possibile with the assistance of digital-to-time converters which enable the cancellation of the divider quantization noise at the input of the phase-detection block.
Frequency Synthesizers for 5G Applications
Levantino, Salvatore
2022-01-01
Abstract
Fifth-generation cellular transceivers operating in the millimeter-wave band require a local oscillator in the tens of gigahertz range, with an absolute jitter below 100 fs rms. In recent years, bang-bang digital and sampling analog phase-locked loops have been demonstrated to be the practical alternatives to conventional charge-pump ones, achieving lower jitter and power consumption in nanoscale CMOS processes. The adoption of those architectures in high-performance fractional-N frequency synthesis has been possibile with the assistance of digital-to-time converters which enable the cancellation of the divider quantization noise at the input of the phase-detection block.File | Dimensione | Formato | |
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Frequency_Synthesizers_for_5G_Applications.pdf
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