High-precision high-sensitivity clock recovery circuit for a mobile payment application

This paper presents a fully integrated carrier clock recovery circuit for a mobile payment application. The architecture is based on a sampling-detection module and a charge pump phase locked loop. Compared with clock recovery in conventional 13.56 MHz transponders, this circuit can recover a high-p...

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Bibliographic Details
Published inJournal of semiconductors Vol. 32; no. 5; pp. 111 - 116
Main Author 孙立崇 任文亮 闫娜 闵昊
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.05.2011
Subjects
Chip formation
Circuits
Clock recovery
Clocks
CMOS
CMOS工艺
EEPROM
Power supplies
Semiconductors
应用
时钟恢复电路
电荷泵锁相环
移动支付
高灵敏度
高精度
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Summary:This paper presents a fully integrated carrier clock recovery circuit for a mobile payment application. The architecture is based on a sampling-detection module and a charge pump phase locked loop. Compared with clock recovery in conventional 13.56 MHz transponders, this circuit can recover a high-precision consecutive carrier clock from the on/off keying （OOK） signal sent by interrogators. Fabricated by a SMIC 0.18-μm EEPROM CMOS process, this chip works from a single power supply as low as 1.5 V. Measurement results show that this circuit provides 0.34% frequency deviation and 8 mV sensitivity.
Bibliography:clock recovery; mobile payment; PLL; OOK; RFID
This paper presents a fully integrated carrier clock recovery circuit for a mobile payment application. The architecture is based on a sampling-detection module and a charge pump phase locked loop. Compared with clock recovery in conventional 13.56 MHz transponders, this circuit can recover a high-precision consecutive carrier clock from the on/off keying （OOK） signal sent by interrogators. Fabricated by a SMIC 0.18-μm EEPROM CMOS process, this chip works from a single power supply as low as 1.5 V. Measurement results show that this circuit provides 0.34% frequency deviation and 8 mV sensitivity.
11-5781/TN
Sun Lichong, Ren Wenliang, Yan Na, Min Hao（1 State Key Laboratory ofASIC ＆ System, Fudan University, Shanghai 201203, China 2Quanray Electronics Co., Ltd., Shanghai 201203, China）
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1674-4926
DOI:10.1088/1674-4926/32/5/055007