TY - JOUR A1 - Pascual García, Juan AU - Quesada Pereira, Fernando Daniel AU - Cañete Rebenaque, David AU - Gómez Díaz, Juan Sebastián AU - Álvarez Melcón , Alejandro T1 - A new neural network technique for the design of multilayered microwave shielded bandpass filters Y1 - 2009 SN - 1096-4290 UR - https://onlinelibrary.wiley.com/doi/abs/10.1002/mmce.20363 UR - http://hdl.handle.net/10317/8499 AB - In this work, we propose a novel technique based on neural networks, for the design of microwave filters in shielded printed technology. The technique uses radial basis function neural networks to represent the non linear relations between the quality factors and coupling coefficients, with the geometrical dimensions of the resonators. The radial basis function neural networks are employed for the first time in the design task of shielded printed filters, and permit a fast and precise operation with only a limited set of training data. Thanks to a new cascade configuration, a set of two neural networks provide the dimensions of the complete filter in a fast and accurate way. To improve the calculation of the geometrical dimensions, the neural networks can take as inputs both electrical parameters and physical dimensions computed by other neural networks. The neural network technique is combined with gradient based optimization methods to further improve the response of the filters. Results are presented to demonstrate the usefulness of the proposed technique for the design of practical microwave printed coupled line and hairpin filters. KW - Teoría de la Señal y las Comunicaciones KW - Neural Networks KW - Microwave filters KW - Microstrip fliters KW - Filter design techniques KW - 2202.10 Radioondas y Microondas LA - eng PB - John Wiley ER -