Design of dual-bandpass hybrid waveguide–microstrip microwave filters
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Martínez Mendoza, Mónica; Gómez Díaz, Juan Sebastián; Cañete Rebenaque, David; Álvarez Melcón , AlejandroGrupo de investigación
Electromagnetismo Aplicado a las Telecomunicaciones (GEAT)Área de conocimiento
Teoría de la Señal y las ComunicacionesPatrocinadores
This work was supported by the Centro de Investigación Cientifica y Tecnológica (CICYT) under Spanish National Project TEC2007-67630-C03-02, and under Regional Séneca Project 02972/PI/05.Fecha de publicación
2008-12Editorial
IEEE Microwave Theory and Techniques SocietyCita bibliográfica
MARTÍNEZ MENDOZA, Mónica, GÓMEZ DÍAZ, Juan Sebastián, CAÑETE REBENAQUE, David, ÁLVAREZ MELCÓN, Alejandro. Design of dual bandpass hybrid waveguide microstrip microwave filters. IEEE Transactions on Microwave Theory and Techniques, 56 (12): 2913 - 2920 p., Diciembre 2008. ISSN 0018-9480Palabras clave
Síntesis de filtro de doble bandaFiltros de doble banda
Tecnología híbrida microfranja guía de onda
Resonador microfranja
Filtros de microondas
Dual band filter synthesis
Hybrid waveguide microstrip technology
Microstrip resonator
Microwave filter
Dual band filters
Resumen
A simple dual-bandpass filtering structure is proposed. The filter is implemented by means of a new hybrid waveguide-microstrip technology. The novelty of the structure is that it combines two standard printed microstrip coupled line resonators, with a resonance of the base waveguide cavity, to implement a dual-band operation. Important aspects about the filter design, useful for practical applications are treated. This includes a study on the maximum coupling that can be achieved to the cavity resonance, and guidelines to control the positions of the two passbands and the transmission zeros. Besides, an example has been designed, manufactured and tested. The measurements on the fabricated prototype have confirmed the validity of the new structure to perform dual-band operation.
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