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IEICE TRANSACTIONS on transactions

Switched-Capacitor High-Pass Ladder Filter Using Modified Lossless Discrete Differentiator

Yoshihiko HORIO

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Summary :

Switched-Capacitor (SC) low-pass ladder filters based on the LDI transformation, have been successfully designed using the Lossless Discrete Integrators (LDIs) as their basic building blocks. However, the design of highpass ladder filters with the LDIs are not straightforward as the low-pass or bandpass case. On the other hand, a high-pass design is achieved easily by using a differentiator as the building block, instead of an integrator. Thus, a new design technique of Switched-Capacitor Modified Lossless Discrete Differentiators (MLDDs) is proposed in this paper. By using them as the basic building block, SC high-pass ladder filters are directly constructed based on the low-pass to high-pass transformation. Furthermore, a fully-differential architecture is applied to this MLDD design, and some MLDD alternatives are investigated for high-frequency and time-sharing applications.

Publication
IEICE TRANSACTIONS on transactions Vol.E71-E No.4 pp.379-387
Publication Date
1988/04/25
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Analog Signal Processing

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