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Acta Armamentarii ›› 2014, Vol. 35 ›› Issue (5): 634-639.doi: 10.3969/j.issn.1000-1093.2014.05.009

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CMOS-compatible High-Q Micro-electro-mechanical System Suspended on-chip Spiral Inductor

LU Chong-ying1, XU Li-xin1, LI Jian-hua1,2, FU Bo2, OU Xiu-long2   

  1. (1.National Key Laboratory of Science and Technology on Electromechanical Dynamic Control,Beijing Institute of Technology,Beijing 100081,China;2.Huaihai Industries Group Co.Ltd,Changzhi 046012, Shanxi,China)
  • Received:2013-06-18 Revised:2013-06-18 Online:2014-06-23
  • Contact: LU Chong-ying E-mail:lcylyr@bit.edu.cn

Abstract: A COMS-compatible high Q-factor suspended on-chip spiral inductor used in the radio frequency front-end of radio fuze is designed and fabricated using the micro-electro-mechanical system (MEMS) surface-micromachining technology. The fabrication process of inductor is compatible with CMOS in the aspects of both thermal budget and materials. The loss factors of on-chip spiral inductor are reduced by using a suspended copper coil, and the Q-factor is significantly improved. The improved inductor model is analyzed by the electromagnetic finite element analysis software HFSS. The MEMS suspended on-chip inductor is measured. The measurement results show that the Q-factor of inductor is more than 20 in the frequency range of 1~7.6 GHz and reaches 38 at 7.4 GHz.

Key words: ordnance science and technology, micro-electro-mechanical system, COMS-compatible process, suspended on-chip spiral inductor, Q-factor, radio fuze

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