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A compact All-NPN fully-differential ladder log-companding filter

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3 Author(s)
Chanapromma, C. ; Fac. of Ind. Technol., Uttaradit Rajabhat Univ. Muang, Uttaradit, Thailand ; Pookrongtong, N. ; Mahattanakul, J.

This paper presents compact structure of the ladder-based upon fully-differential Log-companding filter in [14]. The proposed filter structure is based on the exponential-state-space integrators with compatible input and output voltage levels. Based upon the proposed structure, the derivation of the all NPN-only 3rd-order fully-differential Log-companding Chebyshev low-pass filter is demonstrated. Simulation results of the demonstrated filters are given.

Published in:

Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2012 9th International Conference on

Date of Conference:

16-18 May 2012

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