Title :
A 0.114-mW dual-conduction class-C CMOS VCO with 0.2-V power supply
Author :
Okada, Kenichi ; Nomiyama, You ; Murakami, Rui ; Matsuzawa, Akira
Author_Institution :
Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1-S3-28, Ookayama, Meguro-ku, 152-8552 Japan
Abstract :
This paper proposes a dual-conduction class-C CMOS VCO for ultra-low supply voltages. Two cross-coupled NMOS pairs with different bias points are employed, which realize impulselike current waveform to improve the phase noise in the low supply conditions. The proposed VCO was implemented in a standard 0.18 μm CMOS technology, which oscillates at a carrier frequency of 4.5GHz with a 0.2-V supply voltage. The measured phase noise is −104 dBc/Hz@1MHz-offset with a power consumption of 114 μW, and FoM is −187 dBc/Hz.
Keywords :
CMOS technology; Frequency; MOS devices; Noise measurement; Phase measurement; Phase noise; Power measurement; Power supplies; Voltage measurement; Voltage-controlled oscillators; CMOS; VCO; class-C; impulse sensitivity function (ISF); low supply voltage;
Conference_Titel :
VLSI Circuits, 2009 Symposium on
Conference_Location :
Kyoto, Japan
Print_ISBN :
978-1-4244-3307-0
Electronic_ISBN :
978-4-86348-001-8
