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Design of integrated all‐pass filters with linear group delay for analog signal processing applications
Author(s) -
França Ferreira João Alberto,
AvigMeseldzija Emilie,
Maris Ferreira Pietro,
Sarrazin Julien,
Bénabès Philippe
Publication year - 2020
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.2750
Subject(s) - transfer function , group delay and phase delay , signal processing , lattice (music) , analogue filter , electronic engineering , linear filter , computer science , control theory (sociology) , analog signal processing , algorithm , mathematics , topology (electrical circuits) , digital filter , engineering , filter (signal processing) , digital signal processing , electrical engineering , bandwidth (computing) , telecommunications , combinatorics , physics , acoustics , control (management) , artificial intelligence , computer vision
Summary This article describes the design of integrated linear group delay filters for analog signal processing (ASP) applications and their implementation through constant‐resistance lattice and bridged‐T networks. Unlike previously published works, our design method uses a recursive procedure as the basis for the synthesis of a suitable transfer function. Thanks to this method, filters with a more linear group delay characteristic and flat magnitude response can be obtained. Two filters are designed in a 0.13‐μm BiCMOS technology to demonstrate the method: a balanced lattice with a negative slope and an unbalanced bridged‐T of positive slope.