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A fractional-N frequency synthesizer for cellular and short range multi-standard wireless receiver
2010
Proceedings of 2010 IEEE International Symposium on Circuits and Systems
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This paper presents a Sigma-Delta fractional-N frequency synthesizer for multi-standard receiver. The synthesizer's output range is 1.8~5.8GHz and covers the standards of DCS1800, WCDMA, TD-SCDMA, WLAN802.11a/b/g and Bluetooth. Frequency planning is elaborately done to make sure the synthesizer meets specifications of standards mentioned above. QVCO with a proposed phase shifter is shown to have better phase noise performance and more stable oscillation. Simulated phase noise is -119dBc/Hz at
doi:10.1109/iscas.2010.5537238
dblp:conf/iscas/HuangZLLR10
fatcat:h5h24mh5sva6bfmq7uhujnj5u4