Compact dual-band bandstop filter based on coupled open-ended Hilbert resonators
| Autor: | Slobodan Birgermajer, Norbert Cselyuszka, Vesna Crnojevic-Bengin, Vasa Radonic |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Physics General Physics and Astronomy 020206 networking & telecommunications Topology (electrical circuits) 02 engineering and technology Topology Band-stop filter 01 natural sciences Dual band filter Microstrip Electronic Optical and Magnetic Materials Resonator Filter (video) 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Multi-band device Electrical and Electronic Engineering |
| Zdroj: | Journal of Electromagnetic Waves and Applications. 33:1318-1328 |
| ISSN: | 1569-3937 0920-5071 |
| DOI: | 10.1080/09205071.2019.1607568 |
| Popis: | © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group. In this paper, the design procedure of a compact dual-band bandstop filter (DBBSF) based on coupled open-ended Hilbert lines is proposed. The proposed filter topology consists of two pairs of coupled open-ended lines bended in the shape of the Hilbert fractal curves and a stepped-impedance line section (SIS). In that manner, tree transmission paths are crated allowing the independent control of filter characteristic in both bands. To obtain appropriate coupling between resonators, and the independent control of the center frequencies and in-band characteristics of the filter, the SIS is introduced as matching section. Design rules are derived using lossless transmission line model and even/odd analysis. To validate the design concept, two compact DBBSFs have been designed, fabricated, and measured. The proposed filters exhibit excellent in-band characteristics, high selectivity, and small dimensions. |
| Databáze: | OpenAIRE |
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