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논문 기본 정보

자료유형
학술저널
저자정보
Fujihiko MATSUMOTO (National Defense Academy of Japan) Syuzo NISHIOKA (National Defense Academy of Japan) Shota MATSUO (National Defense Academy of Japan) Takeshi OHBUCHI (National Defense Academy of Japan)
저널정보
대한전자공학회 IEIE Transactions on Smart Processing & Computing IEIE Transactions on Smart Processing & Computing Vol.6 No.6
발행연도
2017.12
수록면
437 - 445 (9page)
DOI
10.5573/IEIESPC.2017.6.6.437

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초록· 키워드

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Impedance scaling techniques are known as methods to realize large capacitance with a small capacitor. Recently, a symmetrical floating impedance scaling (SFIS) circuit was proposed. However, the circuit has restrictions on operations at a lower frequency. In this paper, improvement techniques for low-frequency characteristics of the SFIS circuit are proposed. In order to enhance the terminal resistance, a negative impedance converter (NIC) block is employed in the SFIS circuit. In addition, cascode transistors are introduced to enhance the internal resistance associated with a capacitor in the SFIS circuit. The proposed techniques make the pole frequency lower. The proposed SFIS circuit is applied to a third-order Chebyshev filter via simulation. Cutoff frequency fc of the filter is set to 100 Hz, and the passband ripple of the filter is set to 0.5 dB. Simulation results show that the filter employing the proposed SFIS circuit is superior to a conventional one.

목차

Abstract
1. Introduction
2. Conventional SFIS Circuit
3. Proposed SFIS Circuit
4. Application to Fully Differential Filter
5. Conclusion
References

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