Dielectric TM-Mode Y-Shaped Doublet Structure
This paper discusses dielectric TM-mode filters based on high permittivity Y-shaped ceramics. It is shown that this type of ceramic operates as a dual-mode resonator and therefore contributes two reflection zeros as well as one transmission zero (TZ) to the filter response. Hence, it can be interpre...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Journal of Microwaves |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9990919/ |
| _version_ | 1797960314630701056 |
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| author | Daniel Miek Patrick Boe Fynn Kamrath Kennet Braasch Wolfgang Taute Michael Hoft |
| author_facet | Daniel Miek Patrick Boe Fynn Kamrath Kennet Braasch Wolfgang Taute Michael Hoft |
| author_sort | Daniel Miek |
| collection | DOAJ |
| description | This paper discusses dielectric TM-mode filters based on high permittivity Y-shaped ceramics. It is shown that this type of ceramic operates as a dual-mode resonator and therefore contributes two reflection zeros as well as one transmission zero (TZ) to the filter response. Hence, it can be interpreted as a doublet structure and used for the realization of quasi-elliptical filter responses of different order. The dual-mode resonator can be used in multiple different filter set-ups: On the one hand, a combination with classical TM<inline-formula><tex-math notation="LaTeX">$_{010}$</tex-math></inline-formula>-mode resonators is possible to allow the realization of TZs in an in-line filter configuration without using cross-coupling apertures. Therefore, negative or diagonal cross-couplings, which are often difficult to realize and handle, can be avoided. On the other hand, several Y-shaped ceramics can be coupled directly with each other to increase the number of TZs to <inline-formula><tex-math notation="LaTeX">$n_{fz}=n/2$</tex-math></inline-formula>, where <inline-formula><tex-math notation="LaTeX">$n$</tex-math></inline-formula> is the order of the filter. Finally, it is shown that even a combination with extracted pole elements is realizable. Prototypes based on modular segments are manufactured as proof of concept. |
| first_indexed | 2024-04-11T00:44:09Z |
| format | Article |
| id | doaj.art-f2edd298e02843909b96da834a79bd46 |
| institution | Directory Open Access Journal |
| issn | 2692-8388 |
| language | English |
| last_indexed | 2024-04-11T00:44:09Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Journal of Microwaves |
| spelling | doaj.art-f2edd298e02843909b96da834a79bd462023-01-06T00:00:51ZengIEEEIEEE Journal of Microwaves2692-83882023-01-0131849510.1109/JMW.2022.32243749990919Dielectric TM-Mode Y-Shaped Doublet StructureDaniel Miek0https://orcid.org/0000-0003-2452-5410Patrick Boe1https://orcid.org/0000-0002-9931-2914Fynn Kamrath2https://orcid.org/0000-0003-2514-2905Kennet Braasch3https://orcid.org/0000-0003-0585-3734Wolfgang Taute4Michael Hoft5https://orcid.org/0000-0001-9352-2868Department of Electrical and Information Engineering, Kiel University, Kiel, GermanyDepartment of Electrical and Information Engineering, Kiel University, Kiel, GermanyDepartment of Electrical and Information Engineering, Kiel University, Kiel, GermanyDepartment of Electrical and Information Engineering, Kiel University, Kiel, GermanyDepartment of Electrical and Information Engineering, Kiel University, Kiel, GermanyDepartment of Electrical and Information Engineering, Kiel University, Kiel, GermanyThis paper discusses dielectric TM-mode filters based on high permittivity Y-shaped ceramics. It is shown that this type of ceramic operates as a dual-mode resonator and therefore contributes two reflection zeros as well as one transmission zero (TZ) to the filter response. Hence, it can be interpreted as a doublet structure and used for the realization of quasi-elliptical filter responses of different order. The dual-mode resonator can be used in multiple different filter set-ups: On the one hand, a combination with classical TM<inline-formula><tex-math notation="LaTeX">$_{010}$</tex-math></inline-formula>-mode resonators is possible to allow the realization of TZs in an in-line filter configuration without using cross-coupling apertures. Therefore, negative or diagonal cross-couplings, which are often difficult to realize and handle, can be avoided. On the other hand, several Y-shaped ceramics can be coupled directly with each other to increase the number of TZs to <inline-formula><tex-math notation="LaTeX">$n_{fz}=n/2$</tex-math></inline-formula>, where <inline-formula><tex-math notation="LaTeX">$n$</tex-math></inline-formula> is the order of the filter. Finally, it is shown that even a combination with extracted pole elements is realizable. Prototypes based on modular segments are manufactured as proof of concept.https://ieeexplore.ieee.org/document/9990919/Doubletdual-Modeextracted poleTM-modeY-shaped ceramic |
| spellingShingle | Daniel Miek Patrick Boe Fynn Kamrath Kennet Braasch Wolfgang Taute Michael Hoft Dielectric TM-Mode Y-Shaped Doublet Structure IEEE Journal of Microwaves Doublet dual-Mode extracted pole TM-mode Y-shaped ceramic |
| title | Dielectric TM-Mode Y-Shaped Doublet Structure |
| title_full | Dielectric TM-Mode Y-Shaped Doublet Structure |
| title_fullStr | Dielectric TM-Mode Y-Shaped Doublet Structure |
| title_full_unstemmed | Dielectric TM-Mode Y-Shaped Doublet Structure |
| title_short | Dielectric TM-Mode Y-Shaped Doublet Structure |
| title_sort | dielectric tm mode y shaped doublet structure |
| topic | Doublet dual-Mode extracted pole TM-mode Y-shaped ceramic |
| url | https://ieeexplore.ieee.org/document/9990919/ |
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