Zero-pole approach to computer aided design of in-line siw filters with transmission zeros - Publikacja - MOST Wiedzy

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Zero-pole approach to computer aided design of in-line siw filters with transmission zeros

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This paper presents a design of a new type of in-line pseudo-elliptic filters implemented in substrate integrated waveguide(SIW) technology. To realize transmission zeros in in-line topology,frequency-dependent couplings were used. Such dispersive couplingswere implemented as shorted stubs. The design process startswith the generation of a suitable starting point. To this end, anapproximation of SIW as a rectangular waveguide is used and a fastelectromagnetic solver based on mode-matching technique is utilized(Wave Wizard). The next step is the optimization process of afilter in a full-wave 3D EM simulator Ansoft HFSS. The Optimizationroutine employs a cost function involving zeros and poles of the rational functions approximating scattering parameters. To increase the speed of convergence, a built-in derivative calculation feature was used and zeros and poles and their derivatives with respect to design parameters were extracted using the vector fitting algorithm. Experimental validation of the method is demonstrated by a third-order filter with asymmetric response and a fifth-order filter with two transmission zeros in addition to an asymmetric response. The experimental results show good agreement between the simulated and measured data.

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
Progress in Electromagnetics Research-PIER nr 131, strony 517 - 533,
ISSN: 1559-8985
Język:
angielski
Rok wydania:
2012
Opis bibliograficzny:
Jędrzejewski A., Leszczynska N., Szydłowski Ł., Mrozowski M.: Zero-pole approach to computer aided design of in-line siw filters with transmission zeros// Progress in Electromagnetics Research-PIER. -Vol. 131, (2012), s.517-533
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.2528/pier12061510
Weryfikacja:
Politechnika Gdańska

wyświetlono 78 razy

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