A 2.4-GHz spur-cancelled fractional-n frequency synthesizer with PFD/DAC structure for WSN application

Author

Cheng, Shiwei ; Zhang, Ke ; Lu, Wenqing ; Liu, Yang ; Cao, Shengguo ; Zhou, Xiaofang ; Zhou, Dian

Author_Institution

Fudan Univ., Shanghai

fYear

2007

fDate

22-25 Oct. 2007

Firstpage

696

Lastpage

699

Abstract

A 2.4-GHz wideband fractional-N frequency synthesizer utilizing PFD/DAC structure for Wireless Sensor Network (WSN) Application is presented. In this synthesizer, hybrid of phase/frequency detector and compensated digital-to-analog converter (PFD/DAC) is utilized to achieve phase noise performance as an integer-N synthesizer. The synthesizer is implemented with wide 400 kHz loop bandwidth and 4 us setting time. The chip occupies 1.9 mm² and consumes 16.4 mA at 1.8-V supply.

Keywords

digital-analogue conversion; frequency synthesizers; phase detectors; phase noise; wireless sensor networks; PFD/DAC structure; WSN; digital-to-analog converter; frequency 2.4 GHz; integer-N synthesizer; phase noise; phase/frequency detector; spur-cancelled fractional-n frequency synthesizer; wireless sensor network; Bandwidth; Charge pumps; Frequency synthesizers; Noise shaping; Phase frequency detector; Phase modulation; Phase noise; Radio frequency; Voltage-controlled oscillators; Wireless sensor networks; Fractional synthesizer; delta-sigma modulator; hybrid of PFD/DAC; spur cancellation;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC, 2007. ASICON '07. 7th International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4244-1132-0

Electronic_ISBN

978-1-4244-1132-0

Type

conf

DOI

10.1109/ICASIC.2007.4415726

Filename

4415726