A 7-GHz, Low-Power, Low Phase-Noise Differential Current-Reused VCO Utilizing a Trifilar-Transformer-Feedback Technique

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概要

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• This paper presents a 7GHz differential current-reused voltage-controlled oscillator (CR-VCO) with low power consumption and low phase noise using 0.18-µm CMOS technology. The output power of this CR-VCO is enhanced by utilizing a trifilar-transformer-feedback technique. The lower phase noise is achieved by the more symmetric voltage swings resulting from the improved balance of switching current. At a 1.5-V DC supply voltage, the power dissipation is only 3.4mW. The total tuning range is 1.4GHz (17.9%) as the tuning voltage ranges from 0V to 1.8V. The optimum phase noise is around -117.3dBc/Hz at a frequency offset of 1MHz from the center frequency of 7.07GHz. The corresponding output power is around -6.8dBm. For the proposed CR-VCO, the calculated figures-of-merit, FOM and FOMT, are -188.9 and -193.9dBc/Hz, respectively.

• （社）電子情報通信学会の論文
• 2011-04-01

著者

• WU Shang-Hsun

  Department of Electrical Engineering, National Cheng Kung University

• Wu Shang-hsun

  Department Of Electrical Engineering National Cheng Kung University

• Huang Tzuen-hsi

  Department Of Electrical Engineering National Cheng Kung University

• Tseng Yan-ru

  Department Of Electrical Engineering National Cheng Kung University

関連論文

• A 1-V, 6.72-mW, 5.8-GHz CMOS Injection-Locked Quadrature Local Oscillator with Stacked Transformer Feedback VCO
• A 1-V, 6.72-mW, 5.8-GHz CMOS Injection-Locked Quadrature Local Oscillator with Stacked Transformer Feedback VCO
• A 7-GHz, Low-Power, Low Phase-Noise Differential Current-Reused VCO Utilizing a Trifilar-Transformer-Feedback Technique

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