An Effective Method for Designing Bandpass Filters Using λ/4 Resonators for Improving Out-of-Band Characteristics
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概要
- 論文の詳細を見る
A design methodology of bandpass filters (BPFs) usingλ/4 resonators for improving out-of-band characteristics is proposed. Firstly, the basic characteristics of variousλ/4 resonators arc examined. In this study, we focus on four types ofλ/4 resonators, i.e., (1) direct-coupled λ/4 resonator, (2) loaded-clement λ/4 resonator, (3) tappedλ/4 resonator and (4) loaded-element tappedλ/4 resonator. Secondly, the application examples of BPFs with improved out-of-band characteristics arc provided. We examine the improvement of filter characteristics, i.e., sharp skirt characteristics and low spurious responses. The results of this study lead us to the conclusion (hat the methodology is very useful for improving the out-of-band characteristics of the DPFs using the λ/41 resonators.
- 社団法人電子情報通信学会の論文
- 2003-02-01
著者
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Hashimoto Osamu
Aoyama Gakuin Univ. Sagamihara‐shi Jpn
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Wada K
Department Of Bioscience And Biotechnology Faculty Of Agriculture University Of The Ryukyus
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Wada K
Univ. Electro‐communications Chofu‐shi Jpn
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Hashimoto O
Department Of Electrical And Electronic Engineering Aoyama Gakuin University
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KAMIYAMA Tomohide
Aoyama Gakuin University
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WADA Kouji
The authors are with Aoyama Gakuin University
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KAMIYAMA Tomohide
The authors are with Aoyama Gakuin University
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HASHIMOTO Osamu
The authors are with Aoyama Gakuin University
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Wada Koji
Department Of Bioscience And Biotechnology Faculty Of Agriculture University Of The Ryukyus
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Wada Koji
Faculty Of Agriculture University Of The Ryukyus
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Hashimoto Osamu
Department of Electrical and Electronic Engineering, Aoyama Gakuin University
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