Design of bandpass transversal filters employing a novel hybrid structure
Author
Martínez Mendoza, Mónica; Gómez Díaz, Juan Sebastián; Cañete Rebenaque, David; Álvarez Melcón , Alejandro; Gómez Tornero, José LuisKnowledge Area
Teoría de la Señal y las ComunicacionesSponsors
This work was supported by the Centro de Investigación Científica y Tecnológica under Spanish National Project TEC2004-04313-C02-02/TCM and under Regional Seneca Project 02972/PI/05.Publication date
2007-12Publisher
IEEE Microwave Theory and Techniques SocietyBibliographic Citation
MARTÍNEZ MENDOZA, Mónica, GÓMEZ DÍAZ, Juan Sebastián, CAÑETE REBENAQUE, David, GÓMEZ TORNERO, José Luis, ÁLVAREZ MELCÓN, Alejandro. Design of bandpass transversal filters employing a novel hybrid structure. IEEE Transactions on Microwave Theory and Techniques, 5 (12): 2670 - 2678 p., Diciembre 2007. ISSN 0018-9480Keywords
Filtros de paso de bandaMatriz de acoplamiento
Resonador de filtro
Síntesis técnica
Transmisión de ceros
Filtros transversales
Coupling matrices
Synthesis technique
Transmission zeros
Transversal filter
Bandpass filters
Resonator filters
Abstract
A novel structure for the implementation of compact
transversal bandpass filters is proposed in this paper. This new
proposal consists of a hybrid structure, based on the combination
of two different technologies: the waveguide and microstrip. It is
shown that the novel hybrid microwave filter is able to implement
both a second- and third-order filtering function with up to two
or three transmission zeros, respectively. In this way, a practical
implementation of a fully canonical transversal filter with a third
degree response is for the first time directly achieved. In addition,
the way to control the positions of transmission zeros with the new
technology is treated in this paper. It is shown that symmetric or
asymmetric responses and also filtering functions with a complex
pair of transmission zeros can be easily obtained. To demonstrate
the validity of this novel structure, several implementation examples
are presented. A prototype has been designed, manufactured,
and ...
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