Analysis and Design of a Wide-Tuning-Range VCO With Quadrature Outputs

Shuenn Yuh Lee; Ching Yi Chen

doi:10.1109/TCSII.2008.2008054

Analysis and Design of a Wide-Tuning-Range VCO With Quadrature Outputs

Shuenn Yuh Lee, Ching Yi Chen

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

A quadrature voltage-controlled oscillator (QVCO) with a wide tuning range is proposed and implemented in the TSMC 0.18-μm CMOS process. The said QVCO uses a cross-coupled structure and a current-reuse technology to produce the quadrature signal and to save power consumption and area, respectively. Based on our measurement, the phase noise with 1-MHz offset from the carrier frequency of 3.6 GHz is —114 dBc/Hz and the proposed QVCO has a wide-band tuning range of 3.6-4.9 GHz. Also, the maximal phase error and power imbalance are less than 5° and 1.5 dB, respectively, and the power consumption is 8 mW at 2-V power supply voltage.

Original language	English
Pages (from-to)	1209-1213
Number of pages	5
Journal	IEEE Transactions on Circuits and Systems II: Express Briefs
Volume	55
Issue number	12
DOIs	https://doi.org/10.1109/TCSII.2008.2008054
Publication status	Published - 2008 Dec

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

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10.1109/TCSII.2008.2008054

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title = "Analysis and Design of a Wide-Tuning-Range VCO With Quadrature Outputs",

abstract = "A quadrature voltage-controlled oscillator (QVCO) with a wide tuning range is proposed and implemented in the TSMC 0.18-μm CMOS process. The said QVCO uses a cross-coupled structure and a current-reuse technology to produce the quadrature signal and to save power consumption and area, respectively. Based on our measurement, the phase noise with 1-MHz offset from the carrier frequency of 3.6 GHz is —114 dBc/Hz and the proposed QVCO has a wide-band tuning range of 3.6-4.9 GHz. Also, the maximal phase error and power imbalance are less than 5° and 1.5 dB, respectively, and the power consumption is 8 mW at 2-V power supply voltage.",

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N2 - A quadrature voltage-controlled oscillator (QVCO) with a wide tuning range is proposed and implemented in the TSMC 0.18-μm CMOS process. The said QVCO uses a cross-coupled structure and a current-reuse technology to produce the quadrature signal and to save power consumption and area, respectively. Based on our measurement, the phase noise with 1-MHz offset from the carrier frequency of 3.6 GHz is —114 dBc/Hz and the proposed QVCO has a wide-band tuning range of 3.6-4.9 GHz. Also, the maximal phase error and power imbalance are less than 5° and 1.5 dB, respectively, and the power consumption is 8 mW at 2-V power supply voltage.

AB - A quadrature voltage-controlled oscillator (QVCO) with a wide tuning range is proposed and implemented in the TSMC 0.18-μm CMOS process. The said QVCO uses a cross-coupled structure and a current-reuse technology to produce the quadrature signal and to save power consumption and area, respectively. Based on our measurement, the phase noise with 1-MHz offset from the carrier frequency of 3.6 GHz is —114 dBc/Hz and the proposed QVCO has a wide-band tuning range of 3.6-4.9 GHz. Also, the maximal phase error and power imbalance are less than 5° and 1.5 dB, respectively, and the power consumption is 8 mW at 2-V power supply voltage.

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Analysis and Design of a Wide-Tuning-Range VCO With Quadrature Outputs

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