A variable inductor using mutual-current control and application to a SiGe 4.5-GHz VCO for wide tuning range

Takahiro Nakamura; Toru Masuda; Akihiro Kodama; Katsuyoshi Washio

doi:10.1109/APMC.2005.1606398

A variable inductor using mutual-current control and application to a SiGe 4.5-GHz VCO for wide tuning range

Takahiro Nakamura, Toru Masuda, Akihiro Kodama, Katsuyoshi Washio

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

8 Citations (Scopus)

Abstract

A novel variable inductor using mutual current control was developed and applied to a 4.5-GHz SiGe voltage controlled oscillator (VCO). It consists of a primary inductor, a secondary inductor, and a variable capacitor, and its inductance can be tuned by adjusting the capacitance of the capacitor. It was designed for application to a proposed 4.5-GHz VCO in 0.25-μm SiGe BiCMOS technology. It exhibited a large inductance variation of 22% and a high quality factor of 24 at 4.5 GHz in electro-magnetic simulation. The VCO has a 1.2-GHz tuning range, 32% wider than that of a conventional VCO, and a low phase noise of -121.8 dBc/Hz (at a 1-MHz offset frequency).

Original language	English
Title of host publication	APMC 2005
Subtitle of host publication	Asia-Pacific Microwave Conference Proceedings 2005
DOIs	https://doi.org/10.1109/APMC.2005.1606398
Publication status	Published - 2005 Dec 1
Externally published	Yes
Event	APMC 2005: Asia-Pacific Microwave Conference 2005 - Suzhou, China Duration: 2005 Dec 4 → 2005 Dec 7

Publication series

Name	Asia-Pacific Microwave Conference Proceedings, APMC
Volume	2

Other

Other	APMC 2005: Asia-Pacific Microwave Conference 2005
Country	China
City	Suzhou
Period	05/12/4 → 05/12/7

Keywords

C-band
SiGe HBT
VCO
Variable inductor
W-CDMA
Wide tuning range

ASJC Scopus subject areas

Engineering(all)

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A variable inductor using mutual-current control and application to a SiGe 4.5-GHz VCO for wide tuning range. / Nakamura, Takahiro; Masuda, Toru; Kodama, Akihiro; Washio, Katsuyoshi.

APMC 2005: Asia-Pacific Microwave Conference Proceedings 2005. 2005. 1606398 (Asia-Pacific Microwave Conference Proceedings, APMC; Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Nakamura, T, Masuda, T, Kodama, A & Washio, K 2005, A variable inductor using mutual-current control and application to a SiGe 4.5-GHz VCO for wide tuning range. in APMC 2005: Asia-Pacific Microwave Conference Proceedings 2005., 1606398, Asia-Pacific Microwave Conference Proceedings, APMC, vol. 2, APMC 2005: Asia-Pacific Microwave Conference 2005, Suzhou, China, 05/12/4. https://doi.org/10.1109/APMC.2005.1606398

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title = "A variable inductor using mutual-current control and application to a SiGe 4.5-GHz VCO for wide tuning range",

abstract = "A novel variable inductor using mutual current control was developed and applied to a 4.5-GHz SiGe voltage controlled oscillator (VCO). It consists of a primary inductor, a secondary inductor, and a variable capacitor, and its inductance can be tuned by adjusting the capacitance of the capacitor. It was designed for application to a proposed 4.5-GHz VCO in 0.25-μm SiGe BiCMOS technology. It exhibited a large inductance variation of 22% and a high quality factor of 24 at 4.5 GHz in electro-magnetic simulation. The VCO has a 1.2-GHz tuning range, 32% wider than that of a conventional VCO, and a low phase noise of -121.8 dBc/Hz (at a 1-MHz offset frequency).",

keywords = "C-band, SiGe HBT, VCO, Variable inductor, W-CDMA, Wide tuning range",

author = "Takahiro Nakamura and Toru Masuda and Akihiro Kodama and Katsuyoshi Washio",

year = "2005",

month = dec,

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doi = "10.1109/APMC.2005.1606398",

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T1 - A variable inductor using mutual-current control and application to a SiGe 4.5-GHz VCO for wide tuning range

AU - Nakamura, Takahiro

AU - Masuda, Toru

AU - Kodama, Akihiro

AU - Washio, Katsuyoshi

PY - 2005/12/1

Y1 - 2005/12/1

N2 - A novel variable inductor using mutual current control was developed and applied to a 4.5-GHz SiGe voltage controlled oscillator (VCO). It consists of a primary inductor, a secondary inductor, and a variable capacitor, and its inductance can be tuned by adjusting the capacitance of the capacitor. It was designed for application to a proposed 4.5-GHz VCO in 0.25-μm SiGe BiCMOS technology. It exhibited a large inductance variation of 22% and a high quality factor of 24 at 4.5 GHz in electro-magnetic simulation. The VCO has a 1.2-GHz tuning range, 32% wider than that of a conventional VCO, and a low phase noise of -121.8 dBc/Hz (at a 1-MHz offset frequency).

AB - A novel variable inductor using mutual current control was developed and applied to a 4.5-GHz SiGe voltage controlled oscillator (VCO). It consists of a primary inductor, a secondary inductor, and a variable capacitor, and its inductance can be tuned by adjusting the capacitance of the capacitor. It was designed for application to a proposed 4.5-GHz VCO in 0.25-μm SiGe BiCMOS technology. It exhibited a large inductance variation of 22% and a high quality factor of 24 at 4.5 GHz in electro-magnetic simulation. The VCO has a 1.2-GHz tuning range, 32% wider than that of a conventional VCO, and a low phase noise of -121.8 dBc/Hz (at a 1-MHz offset frequency).

KW - C-band

KW - SiGe HBT

KW - VCO

KW - Variable inductor

KW - W-CDMA

KW - Wide tuning range

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T3 - Asia-Pacific Microwave Conference Proceedings, APMC

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Y2 - 4 December 2005 through 7 December 2005

ER -

A variable inductor using mutual-current control and application to a SiGe 4.5-GHz VCO for wide tuning range

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Keywords

ASJC Scopus subject areas

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