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IJPAP Vol.46(09) [September 2008] >

Title: Log-domain low pass high pass first-order filter
Authors: Shah, N A
Iqbal, S Z
Parveen, Nusrat
Keywords: Log-domain filter
First-order filter
High frequency applicability
Issue Date: Sep-2008
Publisher: CSIR
Abstract: A new first-order log-domain filter topology implementing simultaneously low-pass (LP) and high-pass (HP) filter functions has been presented. The circuit employs log-domain cells, current sources and grounded capacitor. The circuit has simple architecture, wider dynamic range at low power supply and higher frequency operation as it is based on log-exponential relation of a transistor. The electronic tunability of the proposed filter and grounded capacitor make it suitable for construction in IC technology. The PSPICE simulations results are found to be in close conformity with the theoretical results.
Page(s): 667-670
ISSN: 0019-5596
Source:IJPAP Vol.46(09) [September 2008]

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