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A novel lateral bipolar transistor with 67 GHz fmax on thin-film SOI for RF analog applications

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7 Author(s)
H. Nii ; Syst. LSI Res. & Dev. Center, Toshiba Corp., Yokohama, Japan ; T. Yamada ; K. Inoh ; T. Shino
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In this paper, a novel lateral bipolar transistor on thin film silicon-on-insulator (SOI) is presented. With a small emitter size of 0.12×3.0 μm2, low base resistance of 270 Ω due to a novel Co silicided base electrode and low base-collector parasitic capacitances of 1.4 fF due to SOI material, it achieves the highest f max of 67 GHz among SOI bipolar transistors. Also, the low emitter-base capacitance of 1.5 fF and the low collector-substrate capacitance of 2.5 fF are realized. The transistor has a simple structure, which is fabricated with simplified processes without any new sophisticated technologies, excluding trench isolation and epitaxial base used in current bipolar transistors. This can lower the fabrication cost of transistors. We have demonstrated the possibility of lateral bipolar transistor on thin film SOI as next-generation device for RF analog applications

Published in:

IEEE Transactions on Electron Devices  (Volume:47 ,  Issue: 7 )