Title: A Low Phase Noise Frequency Synthesizer for Single-Chip UHF RFID Reader
Abstract: Requirements of frequency synthesizer on phase noise were discussed based on EPC global C1G2 and ETSI multi-protocol operation.A low phase noise 3rd-order II-type charge pump phase locked loop for single-chip CMOS UHF RFID reader was presented,which acted as a frequency synthesizer.Symmetrical LC filters and LDO regulator were used to improve phase noise performance.The circuit was implemented in 0.18 μm CMOS RF technology.Test results showed that the frequency synthesizer had a phase noise of-109.13 dBc/Hz and-127.02 dBc/Hz,at 200 kHz and 1 MHz offset from the carrier,respectively.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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