A novel complementary Colpitts differential CMOS VCO with low phase noise performance

作者：Wei Chien Cheng; Chiu Hsien Chin^*; Yang Yi Tzu; Fu Jeffrey S

来源：Microelectronics Journal, 2009, 40(12): 1698-1704.

DOI：10.1016/j.mejo.2009.08.008

• Voltage-controlled oscillators
• Low phase noise
• Complementary Colpitts
• Differential-ended

A low phase noise Ka-band CMOS voltage-controlled oscillator is proposed in this paper. A new complementary Colpitts structure was adopted in a 0.18-mu m CMOS process to achieve differential-ended outputs, low phase-noise performance, and low-power consumption. The designed VCO oscillates from 29.8 to 30 GHz with 200 MHz tuning range. The measured phase noise at 1-MHz offset is -109dBc/Hz at 30GHz and -105.5dBc/Hz at 29.8GHz. The power consumption of VCO is only 27 mW. In addition, compared with the published papers, the proposed CMOS VCO achieves the best figure of merit (FOM) of -185 dB at 29.95-GHz band.

• 出版日期2009-12
• 单位长春大学