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Study of the SiGe HBT based on the self-alignment and air-bridge

LIU Dao-guang1,2,3;HAO Yue1;XU Shi-liu2,3;LI Kai-cheng2,3;LIU Yu-kui2,3;LIU Rong-kan2,3;ZHANG Jing2,3;HU Hui-yong1 LI Pei-xian1;ZHANG Xiao-ju1;XU Xue-liang2,3

  

  1. (1. Research Inst. of Microelectronics, Xidian Univ., Xi′an 710071, China; 2. National Lab. of Analog Integrated Circuits, Chongqing 400060, China; 3. China Electronics Technology Group Corporation, Sichuan Inst. of Solid-state Circuits, Chongqing 400060, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2005-06-20 Published:2005-06-20

Abstract: By using base-emitter self-alignment and air-bridge technology, the base resistance of SiGe heterojunction bipolar transistors(HBT) together with the capacitance between collector and base is reduced; in addition, the maximum oscillation frequency (fmax) is improved. In this paper, SiGe HBT fmax of 124.2GHz has been obtained based on MBE SiGe materials.

Key words: self-alignment, maximum oscillation frequency, SiGe alloy materials

CLC Number: 

  • TN405