A complementary cross-coupled voltage-controlled oscillator using differential active inductor

作者：Jang Sheng Lyang^*; Chen Meng Hsin; Chang Chia Wei; Juang Miin Horng

来源：Microwave and Optical Technology Letters, 2012, 54(9): 2039-2042.

DOI：10.1002/mop.27030

• 90nm CMOS
• differential active inductor
• phase noise
• complementary cross-coupled VCO
• varactor

This letter presents a new differential active inductor voltage-controlled oscillator (VCO), which uses the complementary cross-coupled pairs to generate differential negative resistance. The active inductor is formed with complementary CMOS. The proposed CMOS low-phase noise VCO has been implemented with the United Manufacture Corp. (UMC) 90nm CMOS technology and the die area is 0.575 x 0.61 mm2. At the supply voltage of 0.9 V, the total power consumption is 4.5 mW. The free-running frequency of VCO is tunable from 1.22 to 1.86 GHz as the tuning voltage is varied from 0.0 to 0.9 V. The measured phase noise at 1MHz offset is -111.56 dBc/Hz at the oscillation frequency of 1.22 GHz and the figure of merit of the proposed VCO is about -166.75 dBc/Hz.

• 出版日期2012-9