An 110 GHz CMOS Colpitts VCO based on switched coupled-inductor

作者：Meng Xiangyu; Chi Baoyong^*; Wang Zhihua

来源：Analog Integrated Circuits and Signal Processing, 2016, 86(1): 115-120.

DOI：10.1007/s10470-015-0646-4

• Colpitts oscillator
• Voltage controlled oscillator (VCO)
• Switched coupled-inductor
• Sub-millimeter wave
• CMOS
• Tuning range

An 110 GHz differential Colpitts VCO with a wide tuning range is proposed. The tuning range could be improved by adopting the switched coupled-inductor with detailed small signal analysis. Based on the proposed technique, a differential Colpitts VCO based on the switched coupled-inductor has been implemented in 65 nm CMOS, and the measured results show that the proposed VCO has two frequency tuning band, covering from 105.3 to 109.37 GHz and from 109.03 to 112.57 GHz, respectively. A phase noise of -90 dBc/Hz at 10 MHz offset with -8.2 dBm output power has been achieved. The core VCO consumes 22.9 mW from a 1.2 V power supply and only 0.06 mm(2) die area.

• 出版日期2016-1
• 单位清华大学