A Novel Fast Lock-in Phase-Locked Loop Frequency Synthesizer with Direct Frequency Presetting Circuit

スポンサーリンク

概要

• 論文の詳細を見る

• This paper proposes a novel, fast lock-in, phase-locked loop (PLL) frequency synthesizer. The synthesizer includes a novel mixed-signal voltage-controlled oscillator (VCO) with a direct frequency presetting circuit. The frequency presetting circuit can greatly speed up the lock-in process by accurately the presetting oscillation frequency of the VCO. We fully integrated the synthesizer in standard 0.35 μm, 3.3 V complementary metal–oxide–semiconductors (CMOS) process. The entire chip area is only 0.4 mm2. The measured results demonstrate that the synthesizer can speed up the lock-in process significantly and the lock-in time is less than 10 μs over the entire oscillation frequency range. The measured phase noise of the synthesizer is $-85$ dBc/Hz at 10 kHz offset. The synthesizer avoids the tradeoff between the lock-in speed and the phase noise/spurs. The synthesizer monitors the chip temperature and automatically compensates for the variation in frequency with temperature.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2006-04-30

著者

• SHOU Guoliang

  Liuhewangtong Microelectronics Ltd.

• Wu Nanjian

  State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P. O. Box 912, Beijing 100083, P. R. China

• Kuang Xiaofei

  State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P. O. Box 912, Beijing 100083, P. R. China

• Shou Guoliang

  Liuhewantong Microelectronics Ltd., Beijing 100085, P. R. China

関連論文

• A Novel Fast Lock-in PLL Frequency Synthesizer with Direct Frequency Presetting Circuit
• A Novel Fast Lock-in Phase-Locked Loop Frequency Synthesizer with Direct Frequency Presetting Circuit

スポンサーリンク