Broadside Couplings for High Selectivity Microstrip Filters
Research Group
Grupo Electromagnetismo Aplicado a las TelecomunicacionesKnowledge Area
Teoría de la Señal y las ComunicacionesPublication date
2001-09Publisher
Wiley & SonsBibliographic Citation
Álvarez Melcón, A.,Mosig, J.R., Guglielmi, M. Broadside Couplings for High Selectivity Microstrip Filters. En Microwave and optical thecnology letters, Vol. 30, No. 5, September 2001, pp. 295-302.Peer review
SIKeywords
Microwave filtersIntegral equations
Multilayered circuits
Broadside couplings
Abstract
This paper describes a number of broadside-coupled microstrip structures and their use for the implementation of high-selectivity
multilayered filters. The broadside configuration allows for the introduction of cross couplings between nonadjacent resonators. The cross cou-
plings can then be used to implement transmission zeros that can
significantly increase the selectivity of the filters. Furthermore, the investigation shows that the amount of coupling can be considerably increased
if the resonators are broadside coupled, thus easily allowing the implementation of broadband filters. Measured results are shown to agree with
predictions, thereby fully Validating the new structures described.
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