TY - JOUR A1 - Martínez Mendoza, Mónica AU - Gómez Díaz, Juan Sebastián AU - Cañete Rebenaque, David AU - Álvarez Melcón , Alejandro AU - Gómez Tornero, José Luis T1 - Design of bandpass transversal filters employing a novel hybrid structure Y1 - 2007 SN - 0018-9480 UR - http://hdl.handle.net/10317/1286 AB - 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 successfully tested, showing the practical validity of the new structure. KW - Teoría de la Señal y las Comunicaciones KW - Filtros de paso de banda KW - Matriz de acoplamiento KW - Resonador de filtro KW - Síntesis técnica KW - Transmisión de ceros KW - Filtros transversales KW - Coupling matrices KW - Synthesis technique KW - Transmission zeros KW - Transversal filter KW - Bandpass filters KW - Resonator filters LA - eng PB - IEEE Microwave Theory and Techniques Society ER -