A low-phase noise and wide-tuning range CMOS voltage controlled oscillator

作者：Lin Yao Chian; Yeh Mei Ling^*

来源：Microwave and Optical Technology Letters, 2012, 54(8): 1941-1944.

DOI：10.1002/mop.26950

• voltage-controlled oscillator
• figure-of-merit
• CMOS
• tuning range
• phase noise

A wide-tuning range and ultra-low-phase-noise 4.28-GHz voltage controlled oscillator (VCO) is designed in this article. The VCO implemented with the TSMC 0.18 mu m 1P6M CMOS technology uses NMOSs only. Source capacitive degeneration technique is used to increase the frequency tuning range. The proposed VCO can have an 18.94% tuning range from 3.53 to 4.34 GHz. The measured phase noise is -131.2 dBc/Hz at 1-MHz offset from the 4.28 GHz. The corresponding figure-of-merit (FOM) and FOMT are calculated to be -191.6 and -197.15 dBc/Hz, respectively. The chip size is 0.571 x 0.822 mm2. The core circuit consumes 16.5-mW and 1.3-V power supply.

• 出版日期2012-8