20-GHz quadrature injection-locked LC dividers with enhanced locking range

Takayuki Shibasaki; Hirotaka Tamura; Kouichi Kanda; Hisakatsu Yamaguchi; Junji Ogawa; Tadahiro Kuroda

doi:10.1109/JSSC.2007.916590

20-GHz quadrature injection-locked LC dividers with enhanced locking range

Takayuki Shibasaki, Hirotaka Tamura, Kouichi Kanda, Hisakatsu Yamaguchi, Junji Ogawa, Tadahiro Kuroda

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

25 Citations (Scopus)

Abstract

Quadrature injection-locked LC dividers with either a Miller topology or an injection-locked LC VCO topology are coupled with transconductors to enhance their locking range. The effect of the transconductance coupling is analyzed theoretically and through circuit simulation. Both topologies were fabricated by 90-nm CMOS technology with a target input center frequency of 20 GHz and output frequency of 10 GHz. The measured locking range for the Miller topology with transconductance coupling is 25.3%, compared to 20.9% without coupling. The measured locking range for the injection-locked LC VCO topology with transconductance coupling is 18.1%, compared to 12.9% without coupling. Moreover, power consumption for both dividers is 6.4 mW with a 1.2-V supply.

Original language	English
Article number	4456788
Pages (from-to)	610-618
Number of pages	9
Journal	IEEE Journal of Solid-State Circuits
Volume	43
Issue number	3
DOIs	https://doi.org/10.1109/JSSC.2007.916590
Publication status	Published - 2008 Mar
Externally published	Yes

Keywords

Frequency dividers
Injection locking
Miller divider
Quadrature
Voltage-controlled oscillators (VCO)

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/JSSC.2007.916590

Cite this

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title = "20-GHz quadrature injection-locked LC dividers with enhanced locking range",

abstract = "Quadrature injection-locked LC dividers with either a Miller topology or an injection-locked LC VCO topology are coupled with transconductors to enhance their locking range. The effect of the transconductance coupling is analyzed theoretically and through circuit simulation. Both topologies were fabricated by 90-nm CMOS technology with a target input center frequency of 20 GHz and output frequency of 10 GHz. The measured locking range for the Miller topology with transconductance coupling is 25.3%, compared to 20.9% without coupling. The measured locking range for the injection-locked LC VCO topology with transconductance coupling is 18.1%, compared to 12.9% without coupling. Moreover, power consumption for both dividers is 6.4 mW with a 1.2-V supply.",

keywords = "Frequency dividers, Injection locking, Miller divider, Quadrature, Voltage-controlled oscillators (VCO)",

author = "Takayuki Shibasaki and Hirotaka Tamura and Kouichi Kanda and Hisakatsu Yamaguchi and Junji Ogawa and Tadahiro Kuroda",

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T1 - 20-GHz quadrature injection-locked LC dividers with enhanced locking range

AU - Shibasaki, Takayuki

AU - Tamura, Hirotaka

AU - Kanda, Kouichi

AU - Yamaguchi, Hisakatsu

AU - Ogawa, Junji

AU - Kuroda, Tadahiro

PY - 2008/3

Y1 - 2008/3

N2 - Quadrature injection-locked LC dividers with either a Miller topology or an injection-locked LC VCO topology are coupled with transconductors to enhance their locking range. The effect of the transconductance coupling is analyzed theoretically and through circuit simulation. Both topologies were fabricated by 90-nm CMOS technology with a target input center frequency of 20 GHz and output frequency of 10 GHz. The measured locking range for the Miller topology with transconductance coupling is 25.3%, compared to 20.9% without coupling. The measured locking range for the injection-locked LC VCO topology with transconductance coupling is 18.1%, compared to 12.9% without coupling. Moreover, power consumption for both dividers is 6.4 mW with a 1.2-V supply.

AB - Quadrature injection-locked LC dividers with either a Miller topology or an injection-locked LC VCO topology are coupled with transconductors to enhance their locking range. The effect of the transconductance coupling is analyzed theoretically and through circuit simulation. Both topologies were fabricated by 90-nm CMOS technology with a target input center frequency of 20 GHz and output frequency of 10 GHz. The measured locking range for the Miller topology with transconductance coupling is 25.3%, compared to 20.9% without coupling. The measured locking range for the injection-locked LC VCO topology with transconductance coupling is 18.1%, compared to 12.9% without coupling. Moreover, power consumption for both dividers is 6.4 mW with a 1.2-V supply.

KW - Frequency dividers

KW - Injection locking

KW - Miller divider

KW - Quadrature

KW - Voltage-controlled oscillators (VCO)

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20-GHz quadrature injection-locked LC dividers with enhanced locking range

Abstract

Keywords

ASJC Scopus subject areas

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