Artículo
Parallel coupled microstrip filters with ground-plane aperture for spurious band suppression and enhanced coupling
Autor/es | Velázquez Ahumada, María del Castillo
Martel Villagrán, Jesús Medina Mena, Francisco |
Departamento | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo Universidad de Sevilla. Departamento de Física Aplicada II |
Fecha de publicación | 2004 |
Fecha de depósito | 2020-06-26 |
Publicado en |
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Resumen | Parallel coupled microstrip sections with a slotted ground plane are proposed as building blocks of coupled-line microstrip filters with enhanced performance. It is shown that, by proper adjustment of the ground-plane slot ... Parallel coupled microstrip sections with a slotted ground plane are proposed as building blocks of coupled-line microstrip filters with enhanced performance. It is shown that, by proper adjustment of the ground-plane slot dimensions, the double frequency spurious band associated with unequal even/odd electrical lengths can be suppressed or meaningfully reduced. As an additional feature, this simple design relaxes tolerances of strip width and spacing in those cases where tightly coupled high-impedance sections are required. A rough preliminary design can be obtained within a few seconds using a fast optimization algorithm based on a quasi-TEM analysis of the coupled sections. Fine tuning is based on the use of a commercial electromagnetic simulator. Finally, experimental check of filter performance is provided. |
Identificador del proyecto | TIC2001-3163 |
Cita | Velázquez Ahumada, M.d.C., Martel Villagrán, J. y Medina Mena, F. (2004). Parallel coupled microstrip filters with ground-plane aperture for spurious band suppression and enhanced coupling. IEEE Transactions on Microwave Theory and Techniques, 52 (3), 1082-1086. |
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