Title :
Microstrip bandpass filters with attenuation poles due to dual-mode behaviour
Author :
Masaoka, Takeshi ; Deguchi, Hiroyuki ; Tsuji, Mikio ; Ebisu, Kyohei
Author_Institution :
Dept. of Electron., Doshisha Univ., Kyotanabe, Japan
fDate :
Sept. 29 2009-Oct. 1 2009
Abstract :
This paper proposes microstrip bandpass filters consisting of a half-wavelength resonator and quarter-wavelength stubs set at the center of the resonator. The proposed filter easily and compactly produces the bandpass characteristic due to the dual-mode operation and also bandstop one having attenuation poles in both outside regions of the passband. The usefulness of the present filters are also verified from measuring transmission characteristics of the fabricated filters.
Keywords :
band-pass filters; microstrip filters; microstrip lines; resonators; attenuation poles; dual-mode operation; dual-mode property; half-wavelength resonator; microstrip bandpass filters; quarter-wavelength stub set; Attenuation; Band pass filters; Dielectric losses; Filtering theory; Microstrip filters; Microstrip resonators; Microwave filters; Resonance; Resonant frequency; Resonator filters; Microstrip line; bandpass filter; dual mode; open-loop resonator; transmission zero;
Conference_Titel :
Microwave Conference, 2009. EuMC 2009. European
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4748-0
