A 1V Dual-Band VCO Using an Integrated Variable Inductor

A 1V Dual-Band VCO Using an Integrated Variable Inductor

An integrated variable inductor is proposed using an on-chip transformer to obtain 2 inherent resonant modes for band-switching applications. Employing such a variable inductor in a 0.18-mum CMOS process at a 1-V supply, a VCO is demonstrated to oscillate in 2 distinct frequency bands from 2.2 GHz t...

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Bibliographische Detailangaben
Hauptverfasser: Leung, L.L.K., Chui, K.W.C., Luong, H.C.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Area measurement
CMOS process
Dual band
Frequency
Inductors
Noise measurement
Phase measurement
Phase noise
Resonance
Voltage-controlled oscillators
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Beschreibung
Zusammenfassung:An integrated variable inductor is proposed using an on-chip transformer to obtain 2 inherent resonant modes for band-switching applications. Employing such a variable inductor in a 0.18-mum CMOS process at a 1-V supply, a VCO is demonstrated to oscillate in 2 distinct frequency bands from 2.2 GHz to 3.6 GHz and from 10.7 GHz to 11.3 GHz. The VCO measures phase noise of around -135.5 dBc/Hz for the lower band and around -126.5dBc/Hz for the upper band at 10-MHz offset while consuming 5mW and occupying an area of 0.4times0.8 mm 2
DOI:10.1109/ASSCC.2005.251718