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High Frequency Properties of Silicon-on-insulator and Novel Depleted Silicon Materials by Mikael Johansson; Jonas Berg; Stefan Bengtsson is a Engineering article available to read on EtoBox.

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High frequency properties of substrates such as substrate losses and cross-talk were investigated for silicon-oninsulator (SOI) materials and for a novel depleted silicon material. Simulations were made to reveal high frequency properties of SOI MOSFETs made on fully depleted SOI materials of dierent substrate resistivities. The substrate resistivity was varied from 0.01 X cm to 10 kX cm. It was found that the high frequency properties of intrinsic transistors were independent of the substrate resistivity, but a system consisting of both active and passive components showed reduced cut-o frequency, f T , and maximum oscillation frequency, f max , for low substrate resistivities. The obtained information on the importance of the silicon substrate resistivity has been used to manufacture a depleted silicon material by use of wafer bonding. The novel material is intended as substrate for high frequency applications. The space charge regions surrounding a bonded silicon/silicon interface deplete the silicon thereby reducing substrate losses at high frequencies. The novel material has been characterised electrically for frequencies up to 40 GHz using metal transmission lines and cross-t

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Author

Mikael Johansson; Jonas Berg; Stefan Bengtsson

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0038-1101)

Published

2001

Language

EN

Field

Engineering (Physical Sciences)