電気学会論文誌C(電子・情報・システム部門誌)
Online ISSN : 1348-8155
Print ISSN : 0385-4221
ISSN-L : 0385-4221
LR両終端形LCフィルタの構成とその能動回路(GIC)によるシミュレーション
石橋 幸男続 和久庄野 和宏
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1996 年 116 巻 4 号 p. 465-471

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There is a general method to simulate LC ladder filters, using equivalent inductances by GIC's. But, when an LPF is realized by this approach, the problems arise, such as DC bias instability and the influence of induced noise.
First, a prototype LC ladder filter, which is obtained by connecting inductors in parallel with the input and output resistors of a conventional doubly terminated LC filter, is proposed, and the active simulation of this LC filter by GIC's, is presented. Second, a fifth-order elliptic LPF is designed. The measured transfer response shows a good agreement with the theoretical value. Finally, it is shown that the sensitivity of the proposed circuit is lower than that of the conventional circuits using GIC's.

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