A 1.2-3.2 GHz CMOS VCO IC utilizing transformer-based variable inductors and amos varactors

Qing Liu; Yusuke Takigawa; Satoshi Kurachi; Nobuyuki Itoh; Toshihiko Yoshimasu

doi:10.1587/transfun.E94.A.568

A 1.2-3.2 GHz CMOS VCO IC utilizing transformer-based variable inductors and amos varactors

Qing Liu^*, Yusuke Takigawa, Satoshi Kurachi, Nobuyuki Itoh, Toshihiko Yoshimasu

^*Corresponding author for this work

Graduate School of Information, Production and Systems

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

6 Citations (Scopus)

Abstract

A novel resonant circuit consisting of transformer-based switched variable inductors and switched accumulationMOS (AMOS) varactors is proposed to realize an ultrawide tuning range voltage-controlledoscillator (VCO). The VCO IC is designed and fabricated using 0.11 μm CMOS technology and fully evaluated on-wafer. The VCO exhibits a frequency tuning range as high as 92.6% spanning from 1.20 GHz to 3.27 GHz at an operation voltage of 1.5V. The measured phase noise of -120 dBc/Hz at 1MHz offset from the 3.1 GHz carrier is obtained.

Original language	English
Pages (from-to)	568-573
Number of pages	6
Journal	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Volume	E94-A
Issue number	2
DOIs	https://doi.org/10.1587/transfun.E94.A.568
Publication status	Published - 2011 Feb

Keywords

AMOS varactor
CMOS
Transformer-based variable inductor
Wide-tuning range

ASJC Scopus subject areas

Signal Processing
Computer Graphics and Computer-Aided Design
Electrical and Electronic Engineering
Applied Mathematics

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10.1587/transfun.E94.A.568

Cite this

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abstract = "A novel resonant circuit consisting of transformer-based switched variable inductors and switched accumulationMOS (AMOS) varactors is proposed to realize an ultrawide tuning range voltage-controlledoscillator (VCO). The VCO IC is designed and fabricated using 0.11 μm CMOS technology and fully evaluated on-wafer. The VCO exhibits a frequency tuning range as high as 92.6% spanning from 1.20 GHz to 3.27 GHz at an operation voltage of 1.5V. The measured phase noise of -120 dBc/Hz at 1MHz offset from the 3.1 GHz carrier is obtained.",

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AU - Liu, Qing

AU - Takigawa, Yusuke

AU - Kurachi, Satoshi

AU - Itoh, Nobuyuki

AU - Yoshimasu, Toshihiko

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N2 - A novel resonant circuit consisting of transformer-based switched variable inductors and switched accumulationMOS (AMOS) varactors is proposed to realize an ultrawide tuning range voltage-controlledoscillator (VCO). The VCO IC is designed and fabricated using 0.11 μm CMOS technology and fully evaluated on-wafer. The VCO exhibits a frequency tuning range as high as 92.6% spanning from 1.20 GHz to 3.27 GHz at an operation voltage of 1.5V. The measured phase noise of -120 dBc/Hz at 1MHz offset from the 3.1 GHz carrier is obtained.

AB - A novel resonant circuit consisting of transformer-based switched variable inductors and switched accumulationMOS (AMOS) varactors is proposed to realize an ultrawide tuning range voltage-controlledoscillator (VCO). The VCO IC is designed and fabricated using 0.11 μm CMOS technology and fully evaluated on-wafer. The VCO exhibits a frequency tuning range as high as 92.6% spanning from 1.20 GHz to 3.27 GHz at an operation voltage of 1.5V. The measured phase noise of -120 dBc/Hz at 1MHz offset from the 3.1 GHz carrier is obtained.

KW - AMOS varactor

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KW - Transformer-based variable inductor

KW - Wide-tuning range

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A 1.2-3.2 GHz CMOS VCO IC utilizing transformer-based variable inductors and amos varactors

Abstract

Keywords

ASJC Scopus subject areas

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