Presentation 2004/9/8
A Study on Improvement of Characteristics for Duplexers Using Various Half-Wavelength Resonators
Kouji Wada, Naoki Matsuda, Takashi Iwasaki, Osamu Hashimoto,
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Abstract(in English) We investigate the design method for a duplexer consisting of bandpass filters(BPFs) using various half-wavelength resonators. The duplexer is designed based on the general filter theory with narrow band approximation and tap-coupling technique. We use lumped-element loaded resonators such as capacitor( C)-loaded type, inductor(L)-loaded type and LC-loaded type for filter structure. The results of this study lead us to the conclusion that the design of the proposed duplexers is of use for realizing high performance characteristics without increasing the number of elements.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Duplexer / Tap-Coupling / Bandpass Filter / Attenuation Pole
Paper # MW2004-140
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Conference Date 2004/9/8(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Study on Improvement of Characteristics for Duplexers Using Various Half-Wavelength Resonators
Sub Title (in English)
Keyword(1) Duplexer
Keyword(2) Tap-Coupling
Keyword(3) Bandpass Filter
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 Naoki Matsuda
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
4th Author's Name Osamu Hashimoto
4th Author's Affiliation Department of Electrical Engineering and Electronics, Aoyama Gakuin University
Date 2004/9/8
Paper # MW2004-140
Volume (vol) vol.104
Number (no) 297
Page pp.pp.-
#Pages 6
Date of Issue