Presentation 2004/3/19
An Improved Multi-Scroll Circuit with Quasi-Floating-Gate Technique
Tetsuya FUJIWARA, Yoshihiko HORIO,
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Abstract(in English) We proposed a CMOS multi-scroll integrated circuit consisting of one or more floating-gate (FG) N-type nonlinear conductance circuits, a high-Q active inductor circuit, two capacitors, and a MOSFET resistor. Although the proposed circuit is simple and versatile, the circuit has two disadvantages. 0ne is a large capacitance to obtain a reasonable inductance value from the active inductor circuit. Another is that the floating-gate in the nonlinear conductance circuit entraps charge during fabrication, which shifts threshold voltage of the MOSFET. In this paper, we improve the multi-scroll circuit. In order to achieve the improvement, we apply the quasi-floating-gate (QFG) technique to the nonlinear conductance circuit. As a result, we can avoid the problem introduced by entrapped charge in the floating-gate MOSFETs. Moreover, we modified the active inductor circuit. Consequently, the capacitance value in the improve active inductance circuit is one tenth as large as that in the former circuit to obtain the same inductance. Therefore, we can realize a more compact multi-scroll circuit than the former circuit.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Multi-Scroll Circuit / Choas IC / Quasi-Floating-Gate Technique
Paper # NLP2003-183
Date of Issue

Conference Information
Committee NLP
Conference Date 2004/3/19(1days)
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Paper Information
Registration To Nonlinear Problems (NLP)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) An Improved Multi-Scroll Circuit with Quasi-Floating-Gate Technique
Sub Title (in English)
Keyword(1) Multi-Scroll Circuit
Keyword(2) Choas IC
Keyword(3) Quasi-Floating-Gate Technique
1st Author's Name Tetsuya FUJIWARA
1st Author's Affiliation Graduate School of Engineering, Tokyo Denki University()
2nd Author's Name Yoshihiko HORIO
2nd Author's Affiliation Graduate School of Engineering, Tokyo Denki University
Date 2004/3/19
Paper # NLP2003-183
Volume (vol) vol.103
Number (no) 741
Page pp.pp.-
#Pages 6
Date of Issue