| Autor: |
Daniel Miek, Patrick Boe, Fynn Kamrath, Kennet Braasch, Wolfgang Taute, Michael Hoft |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
IEEE Journal of Microwaves, Vol 3, Iss 1, Pp 84-95 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2692-8388 |
| DOI: |
10.1109/JMW.2022.3224374 |
| Popis: |
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$_{010}$-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 $n_{fz}=n/2$, where $n$ 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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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