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EM-based synthesis and design of bandpass waveguide filters including manufacturing effects with FEST 3D

Authors

  • Pablo Soto Pacheco,

    Corresponding author
    1. Grupo de Aplicaciones de las Microondas—iTEAM, Universitat Politècnica de Valencia, Camino de Vera s/n, Valencia E-46022, Spain
    • Grupo de Aplicaciones de las Microondas—iTEAM, Universitat Politècnica de Valencia, Camino de Vera s/n, Valencia E-46022, Spain
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  • Vicente E. Boria Esbert,

    1. Grupo de Aplicaciones de las Microondas—iTEAM, Universitat Politècnica de Valencia, Camino de Vera s/n, Valencia E-46022, Spain
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  • Carlos Carceller Candau,

    1. Grupo de Aplicaciones de las Microondas—iTEAM, Universitat Politècnica de Valencia, Camino de Vera s/n, Valencia E-46022, Spain
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  • Carlos P. Vicente Quiles,

    1. Aurora Software and Testing S.L., Edificio de Desarrollo Empresarial 9B, Camino de Vera s/n, Valencia E-46022, Spain
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  • Jordi Gil Raga,

    1. Aurora Software and Testing S.L., Edificio de Desarrollo Empresarial 9B, Camino de Vera s/n, Valencia E-46022, Spain
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  • Benito Gimeno Martínez

    1. Departamento de Física Aplicada—ICMUV, Universitat de València, Dr. Moliner 50, Burjasot E-46100, Valencia, Spain
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Abstract

This article aims at the industry interest on automated design tools that are able to take into account manufacturing effects. First, an efficient design strategy for bandpass waveguide filters including the rounded corners arising from low-cost manufacturing procedures is presented. This technique is based on a recent enhanced prototype and synthesis methodology able to consider the real structure parts. Using the resulting electromagnetic (EM)-based synthesis technique, an excellent structure is extracted, which requires, at most, only a slight final EM optimization. Second, this article presents analytical expressions providing error estimates for the different filter performances in terms of manufacturing tolerances. From such expressions, designers can determine the tolerance to be requested for a tuning-less implementation. Moreover, they can also be used to set the convergence criterion for the synthesis procedure. A fully automated design tool of bandpass waveguide filters able to consider manufacturing impairments has been developed and integrated in the commercial software Full-wave EM Simulation Tool 3D (FEST 3D). © 2011 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2012.

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