A 0.3 V Cross-Coupled VCO Using Dynamic Threshold MOSFET

作者：Jang Sheng Lyang^*; Huang Chuang Jen; Hsue Ching Wen; Chang Chia Wei

来源：IEEE Microwave and Wireless Components Letters, 2010, 20(3): 166-168.

DOI：10.1109/LMWC.2010.2040220

• Dynamic threshold voltage
• 130 nm nMOS
• ultra-low voltage
• voltage-controlled oscillators (VCOs)

An ultra-low voltage differential voltage-controlled oscillator (VCO) is designed and implemented in a 0.13 mu m CMOS 1P8M process. The designed circuit topology is an nMOS-core cross-coupled LC-tank VCO, and a self-generated 2nd harmonic ac signal is coupled to the bodies of MOSFETs to enhance the VCO performance. At the supply voltage of 0.3 V, the output phase noise of the VCO is -116.88 dBc/Hz at 1 MHz offset frequency from the carrier frequency of 3.579 GHz, and the figure of merit is -194.43 dBc/Hz. Total power consumption is 0.225 mW. Tuning range is about 240(770) MHz, from 3.39 to 3.63(4.16) GHz, while the control voltage was tuned from 0 V to 0.3(1.0) V.

• 出版日期2010-3