Auxiliary Feed-Forward Noise Cancellation Techniques for a Generic Type-II Ring Oscillator Phase Locked Loop
| Autor: | Yongping Fan, Peter R. Kinget, Shravan S. Nagam |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
020208 electrical & electronic engineering 02 engineering and technology Ring oscillator Signal edge Topology Phase detector Phase-locked loop Noise Phase noise 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Active noise control Jitter |
| Zdroj: | IEEE Transactions on Circuits and Systems II: Express Briefs. 68:1670-1674 |
| ISSN: | 1558-3791 1549-7747 |
| Popis: | This brief presents an auxiliary feed-forward noise cancellation (AFFNC) technique that can be applied to a generic Type-II ring oscillator (RO) PLL. The AFFNC technique uses a stand alone sub-sampling phase detector (SSPD) embedded into an alignment loop to extract and cancel noise from the RO output. Along with AFFNC, which uses one reference edge for noise extraction, a Double Sampled AFFNC (DS-AFFNC) which utilizes both the rising and falling edge of the reference for noise extraction is also presented. By using both the reference edges, higher cancellation bandwidth is achieved in DS-AFFNC. The phase-domain model developed for AFFNC and DS-AFFNC show a 2.9x and 3.9x integrated jitter reduction respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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