NDLI: A regulated low phase noise differential colpitts VCO for mobile RFID system

Content Provider	IEEE Xplore Digital Library
Author	Hyoung-Hwan Roh Eun-Jin Lee Jin-Wook Jung Kyong-Tae Park Kwan-Kyu Nae Hong-Goo Cho Jun-Seok Park Jong-Eun Jang
Copyright Year	2007
Description	Author affiliation: Kookmin Univ., Seoul (Hyoung-Hwan Roh; Eun-Jin Lee; Jin-Wook Jung; Kyong-Tae Park; Kwan-Kyu Nae; Hong-Goo Cho; Jun-Seok Park)
Abstract	A regulated low phase noise differential colpitts VCO (voltage controlled oscillator) for mobile RFID system is presented. The differential colpitts VCO meets the multiple- interrogator environment specifications. The VCO use a 0.35 technology and achieves tuning range 1.55 GHz - 2.053 GHz. Measuring 910 MHz frequency divider output, phase noise performance is -106 dBc/Hz and -135 dBc/Hz at 40 kHz and 1 MHz offset, respectively. 5-bit digital coarse-tuning and accumulation type MOS varactors allow for 28.2% tuning range, which is required to cover the LO frequency range of a UHF Mobile RFID system. Optimum design techniques ensure low VCO gain (< 45 MHz/V) for good interoperability with the frequency synthesizer. To the author' knowledge, this differential colpitts VCO achieves a figure of merit (FOM) of 1.93 dB at 2-GHz band.
Starting Page	1113
Ending Page	1116
File Size	425902
Page Count	4
File Format	PDF
ISBN	9782874870019
DOI	10.1109/EUMC.2007.4405393
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-09
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	European Microwave Association
Subject Keyword	Phase noise Voltage-controlled oscillators Radiofrequency identification Tuning Frequency conversion Frequency measurement Noise measurement Phase measurement Varactors Frequency synthesizers
Content Type	Text
Resource Type	Article

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