Enhanced topology for the design of bandpass elliptic filters employing inductive windows and dielectric objects
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Martínez Mendoza, Mónica; Pérez Soler, Francisco J.; Gómez Díaz, Juan Sebastián; Quesada Pereira, Fernando Daniel; Álvarez Melcón , Alejandro; [et al.]Grupo de investigación
Grupo de Electromagnetismo Aplicado a las Telecomunicaciones (GEAT)Área de conocimiento
Teoría de la Señal y las ComunicacionesPatrocinadores
The authors thank Ministerio de Educación y Ciencia of Spain, which has supported this work under Grant TEC2007- 67630-C03-02/TCM.Fecha de publicación
2008-06Editorial
Institute Electrical and Electronics Engineers (IEEE)Cita bibliográfica
MARTÍNEZ MENDOZA, Mónica et al. Enhanced topology for the design of bandpass elliptic filters employing inductive windows and dielectric objects. En: IEEE MTT-S International Microwave Symposium Digest (2008: Atlanta, GA ) 2008 IEEE MTT-S International Microwave Symposium Digest - MTT 2008. Atlanta, GA : Institute Electrical and Electronics Engineers, 2008. Pp. 635 - 638. ISBN 978-1-4244-1780-3Palabras clave
Puesto dielectricoFiltros inductivos
Ceros de transmisión
Filtros transversales
Filtros de onda guía
Dielectric posts
Doublet topology
Inductive filters
Transmission zeros
Transversal filter
Waveguide filter
Resumen
This work presents a new topology for the design of bandpass elliptic filters employing inductive windows and dielectric objects. The proposed filtering structure combines, for the first time, the modified TE 102 resonating mode with the modified TE 201 mode. The TE 201 mode is excited by placing a wide dielectric post inside a waveguide cavity. The main advantage of the new topology is that two transmission zeros can be synthesized in the insertion loss response of the filter, for a second order structure. Also there is a high flexibility on the location of the transmission zeros. They can be synthesized along the frequency axis for maximum selectivity, or as a pair of complex poles for phase equalization.
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