Design of bandpass transversal filters employing a novel hybrid structure
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AuthorMartínez Mendoza, Mónica; Gómez Díaz, Juan Sebastián; Cañete Rebenaque, David; Álvarez Melcón , Alejandro; Gómez Tornero, José Luis
Knowledge AreaTeoría de la Señal y las Comunicaciones
SponsorsThis 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.
PublisherIEEE Microwave Theory and Techniques Society
Bibliographic CitationMARTÍNEZ 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 0018-9480
KeywordsFiltros de paso de banda
Matriz de acoplamiento
Resonador de filtro
Transmisión de ceros
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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