A Low-Noise Frequency Synthesizer Using Multiphase Generation and Combining Techniques

A ring oscillator (RO)-based low-noise frequency synthesizer is presented. Phase noise degradation caused by jitter accumulation in conventional RO-based synthesizers is alleviated by increasing the update rate. To this end, multiple phases of the crystal oscillator (XO) output are generated and edg...

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Veröffentlicht in:	IEEE journal of solid-state circuits 2020-03, Vol.55 (3), p.592-601
Hauptverfasser:	Khashaba, Amr, Elkholy, Ahmed, Megawer, Karim M., Ahmed, Mostafa Gamal, Hanumolu, Pavan Kumar
Format:	Artikel
Sprache:	eng
Schlagworte:	Accumulation Clocks CMOS Crystal oscillator (XO) Crystal oscillators Crystals DCDL Delays edge combing Frequency multipliers Frequency synthesizers injection locking Jitter Multiphase multiphase generation Noise Noise generation Oscillators phase mismatch Power consumption ring VCO Synthesis Synthesizers Vibration Walsh–Hadamard (WH) codes
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