Design and Analysis of a Fractional Frequency Synthesizer With <90-fs Jitter and <-103-dBc Spurious Tones Using Digital Spur Cancellation

In this article, we describe an advanced multi-output fractional frequency synthesizer (FFS) featuring an innovative digital spur cancellation technique. This technique not only effectively suppresses fractional- N spurs but also eliminates externally coupled spurious tones. In addition, this artic...

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Veröffentlicht in:IEEE journal of solid-state circuits 2024-10, Vol.59 (10), p.3417-3431
Hauptverfasser: Zeinali, Mohammadreza, Hung, Szu-Yao, Pamarti, Sudhakar
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Hung, Szu-Yao
Pamarti, Sudhakar
description In this article, we describe an advanced multi-output fractional frequency synthesizer (FFS) featuring an innovative digital spur cancellation technique. This technique not only effectively suppresses fractional- N spurs but also eliminates externally coupled spurious tones. In addition, this article includes a comprehensive exploration of the proposed method, offering theoretical analysis and simulation results to elucidate the associated design tradeoffs. Leveraging this novel spur cancellation approach, our synthesizer demonstrates exceptional performance, with results such as
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subjects Bang–bang phase detector (BBPD)
Calibration
Clocks
delta-sigma modulation
digital spur cancellation
digital-to-phase converter (DPC)
fractional frequency synthesizer (FFS)
Frequency conversion
Frequency synthesizers
high-pass-shaped dithering
Jitter
phase interpolation
Phase locked loops
Phase noise
title Design and Analysis of a Fractional Frequency Synthesizer With <90-fs Jitter and <-103-dBc Spurious Tones Using Digital Spur Cancellation
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