Artículo
Common-mode suppression in microstrip differential lines by means of complementary split ring resonators: Theory and applications
Autor/es | Naqui, Jordi
Fernández Prieto, Armando Durán Sindreu, Miguel Mesa Ledesma, Francisco Luis Martel Villagrán, Jesús Medina Mena, Francisco Martín, Ferran |
Departamento | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo Universidad de Sevilla. Departamento de Física Aplicada I Universidad de Sevilla. Departamento de Física Aplicada II |
Fecha de publicación | 2012 |
Fecha de depósito | 2020-06-03 |
Publicado en |
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Resumen | This paper is focused on the application of complementary split-ring resonators (CSRRs) to the suppression of the common (even) mode in microstrip differential transmission lines. By periodically and symmetrically etching ... This paper is focused on the application of complementary split-ring resonators (CSRRs) to the suppression of the common (even) mode in microstrip differential transmission lines. By periodically and symmetrically etching CSRRs in the ground plane of microstrip differential lines, the common mode can be efficiently suppressed over a wide band whereas the differential signals are not affected. Throughout the paper, we present and discuss the principle for the selective common-mode suppression, the circuit model of the structure (including the models under even- and odd-mode excitation), the strategies for bandwidth enhancement of the rejected common mode, and a methodology for common-mode filter design. On the basis of the dispersion relation for the common mode, it is shown that the maximum achievable rejection bandwidth can be estimated. Finally, theory is validated by designing and measuring a differential line and a balanced bandpass filter with common-mode suppression, where double-slit CSRRs (DS-CSRRs) are used in order to enhance the common-mode rejection bandwidth. Due to the presence of DS-CSRRs, the balanced filter exhibits more than 40 dB of common-mode rejection within a 34% bandwidth around the filter pass band. |
Identificador del proyecto | TEC2010-17512
TEC2010-16948 TEC2011-13615-E CSD2008-00066 2009SGR-421 VALTEC08-1-0009 |
Cita | Naqui, J., Fernández Prieto, A., Durán Sindreu, M., Mesa Ledesma, F.L., Martel Villagrán, J., Medina Mena, F. y Martín, F. (2012). Common-mode suppression in microstrip differential lines by means of complementary split ring resonators: Theory and applications. IEEE Transactions on Microwave Theory and Techniques, 60 (10), 3023-3034. |
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