11.8GHz CMOS VCO With 62% Tuning Range Using Switched Coupled Inductors

A VCO uses coupled switched inductors to achieve a 61.9% tuning range centered at 11.75 GHz. The phase noise is measured to be -83 and -106 dBc/Hz at 100 kHz and 1 MHz offsets respectively. This 0.076 mm 2 VCO is fabricated in a 90 nm standard digital CMOS process, uses 33% more area than a single-i...

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Bibliographic Details
Published in2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium pp. 401 - 404
Main Authors Demirkan, M., Bruss, S.P., Spencer, R.R.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2007
Subjects
Circuit optimization
CMOS
CMOS technology
Coils
Coupling circuits
Inductors
Mutual coupling
Phase noise
Switches
transformers
Tuning
tuning range
voltage controlled oscillator (VCO)
Voltage-controlled oscillators
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Summary:A VCO uses coupled switched inductors to achieve a 61.9% tuning range centered at 11.75 GHz. The phase noise is measured to be -83 and -106 dBc/Hz at 100 kHz and 1 MHz offsets respectively. This 0.076 mm 2 VCO is fabricated in a 90 nm standard digital CMOS process, uses 33% more area than a single-inductor VCO and consumes 7.7 mW from a 1.2 V supply.
ISBN:9781424405305
1424405300
ISSN:1529-2517
2375-0995
DOI:10.1109/RFIC.2007.380910