Browsing by Author "Salazar Palma, Magdalena"

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    Design of a compact diplexer for multisystem das solutions
    (IEEE Computer Society, 2011) Castillo Araníbar, Patricia Raquel; Garcia Lamperez, Alejandro; Segovia Vargas, Daniel; Salazar Palma, Magdalena
    This paper presents a microstrip diplexer for multisystem Distributed Antenna System (DAS) solutions, namely for DCS and UMTS systems. A low-pass quasi-elliptic filter with a stub-like structure is used for the 1800 MHz band while a band-pass Chebychev filter with a hairpin line structure is employed for the 2150 MHz band. Both filters are connected to the common port through a T junction. The diplexer layout has been optimized in order to ensure compactness. Good agreement between simulated and measured results has been obtained. The diplexer shows excellent performance in terms of high isolation and low insertion loss. A semi-lumped element model of the diplexer is also presented. © 2011 IEEE.
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    Multiple split-ring resonators for tri-band filter with asymmetric response
    (Scopus, 2011) Castillo Araníbar, Patricia Raquel; Garcia Lamperez, Alejandro; Segovia Vargas, Daniel; Salazar Palma, Magdalena; Barbin, Silvio
    A triple-band filter composed of multiple split ring resonators is presented. This filter is based on a chain of triple split ring resonators that produces three pass-bands. The change in the dimensions of the corresponding meander lines of the tri-band SRRs can make us obtain an asymmetric response. This response is useful for some microwave applications. This paper presents a study of asymmetric multiband filters based on multiple split ring resonators. © 2011 IEEE.