Presentation 2005-07-15
Realization of Filiter Characteristics with Attenuation poles by Bandpass Filters with Stepped Impedance Tapped Resonators
Kouji Wada, Koichiro Takemura, Takashi Iwasaki,
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Abstract(in English) We examine the resonance characteristics when the distributed tap-coupling is applied to a λ/2 resonator, and the impedance step strucutre is applied to the loading part and the resonator itself. It is confirmed that the attenuation poles are located near the center frequency and spurious responses near the passband are away from the center frequency by using the impedance steps to loading and resonator parts. We also confirm that the impedance step can be applied to the resonator part and the length of the proposed resonator be shortened compared with the conventional type by using impedance step to the resonator part.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Bandpass filter / Impedance step / Tap-coupling / Attenuation pole
Paper # MW2005-57,OPE2005-41
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Committee MW
Conference Date 2005/7/8(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Realization of Filiter Characteristics with Attenuation poles by Bandpass Filters with Stepped Impedance Tapped Resonators
Sub Title (in English)
Keyword(1) Bandpass filter
Keyword(2) Impedance step
Keyword(3) Tap-coupling
Keyword(4) Attenuation pole
1st Author's Name Kouji Wada
1st Author's Affiliation Department of Electronic Engineering, The University of Electro-Communications()
2nd Author's Name Koichiro Takemura
2nd Author's Affiliation Department of Electronic Engineering, The University of Electro-Communications
3rd Author's Name Takashi Iwasaki
3rd Author's Affiliation Department of Electronic Engineering, The University of Electro-Communications
Date 2005-07-15
Paper # MW2005-57,OPE2005-41
Volume (vol) vol.105
Number (no) 181
Page pp.pp.-
#Pages 6
Date of Issue