DPLL for Phase Noise Cancellation in Ring Oscillator-Based Quadrature Receivers
In this paper, a low overhead phase noise cancellation technique for ring oscillator (RO)-based quadrature receivers is presented. The proposed technique operates in background and extracts RO phase noise as well as supply-induced phase noise from the digital phase-locked loop. The obtained phase no...
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Veröffentlicht in: | IEEE journal of solid-state circuits 2017-04, Vol.52 (4), p.1134-1143 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | In this paper, a low overhead phase noise cancellation technique for ring oscillator (RO)-based quadrature receivers is presented. The proposed technique operates in background and extracts RO phase noise as well as supply-induced phase noise from the digital phase-locked loop. The obtained phase noise information is then used to restore the randomly rotated baseband signal in digital domain. A receiver prototype is fabricated in standard 65-nm CMOS technology. It demonstrates a phase noise reduction from -88 to -109 dBc/Hz at 1-MHz offset and an integrated phase noise reduction from -16.8 to -34.6 dBc when operating at 2.4 GHz. |
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ISSN: | 0018-9200 1558-173X |
DOI: | 10.1109/JSSC.2017.2647925 |