A 47 GHz LC cross-coupled VCO employing high-Q island-gate varactor for phase noise reduction

Namhyung Kim; Yongho Oh; Jae Sung Rieh

doi:10.1109/LMWC.2009.2038522

A 47 GHz LC cross-coupled VCO employing high-Q island-gate varactor for phase noise reduction

Namhyung Kim, Yongho Oh, Jae Sung Rieh

School of Electrical Engineering

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

9 Citations (Scopus)

Abstract

A 47 GHz LC cross-coupled voltage controlled oscillator (VCO) employing the high-Q island-gate varactor (IGV) based on a 0.13 μm RFCMOS technology is reported in this work. To verify the improvement in the phase noise, two otherwise identical VCOs, each with an IGV and a conventional multi-finger varactor, were fabricated and the phase noise performance was compared. With V_DD of 1.2 V and core power consumption of 3.86 mW, the VCOs with the IGV and the multi-finger varactor have a phase noise of -95.4 dBc/Hz and -91.4 dBc/Hz respectively, at 1 MHz offset, verifying the phase noise reduction with the introduction of the high-Q IGV. The VCO with IGV exhibited an output power of around -15 dBm, leading to a FoM of -182.9 dBc/Hz and a tuning range of 3.35% (45.69 to 47.22 GHz).

Original language	English
Article number	5392992
Pages (from-to)	94-96
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	20
Issue number	2
DOIs	https://doi.org/10.1109/LMWC.2009.2038522
Publication status	Published - 2010 Feb

Keywords

Phase noise
Varactor
Voltage controlled oscillator (VCO)

ASJC Scopus subject areas

Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/LMWC.2009.2038522

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title = "A 47 GHz LC cross-coupled VCO employing high-Q island-gate varactor for phase noise reduction",

abstract = "A 47 GHz LC cross-coupled voltage controlled oscillator (VCO) employing the high-Q island-gate varactor (IGV) based on a 0.13 μm RFCMOS technology is reported in this work. To verify the improvement in the phase noise, two otherwise identical VCOs, each with an IGV and a conventional multi-finger varactor, were fabricated and the phase noise performance was compared. With VDD of 1.2 V and core power consumption of 3.86 mW, the VCOs with the IGV and the multi-finger varactor have a phase noise of -95.4 dBc/Hz and -91.4 dBc/Hz respectively, at 1 MHz offset, verifying the phase noise reduction with the introduction of the high-Q IGV. The VCO with IGV exhibited an output power of around -15 dBm, leading to a FoM of -182.9 dBc/Hz and a tuning range of 3.35% (45.69 to 47.22 GHz).",

keywords = "Phase noise, Varactor, Voltage controlled oscillator (VCO)",

author = "Namhyung Kim and Yongho Oh and Rieh, {Jae Sung}",

note = "Funding Information: Manuscript received July 18, 2009; revised November 16, 2009. First published January 19, 2010; current version published February 10, 2010. This work was supported in part by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009-0079994) and a Korea University Grant.",

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doi = "10.1109/LMWC.2009.2038522",

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T1 - A 47 GHz LC cross-coupled VCO employing high-Q island-gate varactor for phase noise reduction

AU - Kim, Namhyung

AU - Oh, Yongho

AU - Rieh, Jae Sung

N1 - Funding Information: Manuscript received July 18, 2009; revised November 16, 2009. First published January 19, 2010; current version published February 10, 2010. This work was supported in part by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009-0079994) and a Korea University Grant.

PY - 2010/2

Y1 - 2010/2

N2 - A 47 GHz LC cross-coupled voltage controlled oscillator (VCO) employing the high-Q island-gate varactor (IGV) based on a 0.13 μm RFCMOS technology is reported in this work. To verify the improvement in the phase noise, two otherwise identical VCOs, each with an IGV and a conventional multi-finger varactor, were fabricated and the phase noise performance was compared. With VDD of 1.2 V and core power consumption of 3.86 mW, the VCOs with the IGV and the multi-finger varactor have a phase noise of -95.4 dBc/Hz and -91.4 dBc/Hz respectively, at 1 MHz offset, verifying the phase noise reduction with the introduction of the high-Q IGV. The VCO with IGV exhibited an output power of around -15 dBm, leading to a FoM of -182.9 dBc/Hz and a tuning range of 3.35% (45.69 to 47.22 GHz).

AB - A 47 GHz LC cross-coupled voltage controlled oscillator (VCO) employing the high-Q island-gate varactor (IGV) based on a 0.13 μm RFCMOS technology is reported in this work. To verify the improvement in the phase noise, two otherwise identical VCOs, each with an IGV and a conventional multi-finger varactor, were fabricated and the phase noise performance was compared. With VDD of 1.2 V and core power consumption of 3.86 mW, the VCOs with the IGV and the multi-finger varactor have a phase noise of -95.4 dBc/Hz and -91.4 dBc/Hz respectively, at 1 MHz offset, verifying the phase noise reduction with the introduction of the high-Q IGV. The VCO with IGV exhibited an output power of around -15 dBm, leading to a FoM of -182.9 dBc/Hz and a tuning range of 3.35% (45.69 to 47.22 GHz).

KW - Phase noise

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KW - Voltage controlled oscillator (VCO)

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A 47 GHz LC cross-coupled VCO employing high-Q island-gate varactor for phase noise reduction

Abstract

Keywords

ASJC Scopus subject areas

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