Comb-Line Filter with Coupling Capacitor in Ground Plane

Autor:	Toshiaki Kitamura
Jazyk:	angličtina
Rok vydání:	2011
Předmět:	Electrical engineering. Electronics. Nuclear engineering TK1-9971
Zdroj:	Active and Passive Electronic Components, Vol 2011 (2011)
Druh dokumentu:	article
ISSN:	0882-7516 1563-5031
DOI:	10.1155/2011/919240
Popis:	A comb-line filter with a coupling capacitor in the ground plane is proposed. The filter consists of two quarter-wavelength microstrip resonators. A coupling capacitor is inserted into the ground plane in order to build strong coupling locally along the resonators. The filtering characteristics are investigated through numerical simulations as well as experiments. Filtering characteristics that have attenuation poles at both sides of the passband are obtained. The input susceptances of even and odd modes and coupling coefficients are discussed. The filters using stepped impedance resonators (SIRs) are also discussed, and the effects of the coupling capacitor for an SIR structure are shown.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/3a05ef8eba8b4d16bab6e4a9f37723a1 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF