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Realization of log‐domain high‐order transfer functions using first‐order building blocks and complementary operators
Author(s) -
Psychalinos Costas
Publication year - 2006
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.378
Subject(s) - transfer function , high pass filter , integrator , lossless compression , filter (signal processing) , realization (probability) , algorithm , topology (electrical circuits) , representation (politics) , block (permutation group theory) , mathematics , computer science , electronic engineering , low pass filter , engineering , telecommunications , bandwidth (computing) , electrical engineering , statistics , geometry , data compression , combinatorics , computer vision , politics , law , political science
High‐order log‐domain filters could be easily designed by using the functional block diagram (FBD) representation of the corresponding linear prototype and a set of complementary operators. For this purpose, lossy and lossless integrator blocks have been already introduced in the literature. Novel first‐order log‐domain highpass and allpass filter configurations, which are fully compatible with the already published integrator blocks, are introduced in this paper. These are realized using integration and subtraction blocks or a novel differentiation configuration. As a result, a complete set of first‐order building blocks would be available for synthesizing any arbitrary high‐order transfer function. In order to verify the correct operation of the proposed structures, the performance of the introduced highpass filters was evaluated through simulation results. In addition, a fifth‐order log‐domain bandpass filter was designed and simulated using one of the introduced first‐order highpass filter configurations. Copyright © 2006 John Wiley & Sons, Ltd.