Comparison of Cascade, Lattice, and Parallel Filter Architectures

• Published in: Journal of lightwave technology Vol. 28; no. 23; pp. 3463 - 3469
• Main Authors: Patnaik, Rohit, Vandrasi, Vivek, Madsen, Christi K, Eftekhar, Ali A, Adibi, Ali
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.12.2010; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Band pass filters; Cascade filter; Cascades; Computer architecture; Detection, estimation, filtering, equalization, prediction; Digital filters; Exact sciences and technology; Feedback; filter architecture; filter tolerance; Filtering theory; Information, signal and communications theory; lattice filter; Lattices; Microprocessors; Narrowband; Nonlinearity; Optical filters; parallel filter; Signal and communications theory; Signal, noise; Simulation; Telecommunications and information theory; Cascade filter; Lattice filters; filter architecture; parallel filter; Feedback regulation; Parallel architectures; Narrow band; Non linear phenomenon; lattice filter; Simulation; Feedback; filter tolerance; Non linear effect; Comparative study
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.2010.2089972

We examine the use of different high-level filter architectures (cascade, lattice, and parallel). We discuss their advantages and disadvantages, and we present simulation results and filter-tolerance tests. This information serves as a useful comparative analysis in the selection of a high-level filter architecture for a particular problem. The sensitivity to nonlinearity is also evaluated as resonance-enhanced power in the feedback path. For narrowband band-pass responses, cascade architectures appear to be more tolerant to filter parameter variations than lattice architectures and are substantially more efficient than parallel architectures.