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Compact bandstop filters using coupled lines and open/short stubs with multiple transmission poles.
- Source :
-
IET Microwaves, Antennas & Propagation (Wiley-Blackwell) . 2019, Vol. 13 Issue 9, p1368-1372. 5p. - Publication Year :
- 2019
-
Abstract
- A compact bandstop filter (BSF) using parallel-coupled lines and open stubs with four transmission poles (TPs) is proposed. Through theoretical equation deduction, the positions of these four TPs can be obtained. Good roll-off skirts and stopband suppression characteristics of the BSF can be realised with the help of multiple TPs. To improve transition band roll-off rates, another BSF with five TPs is designed, where a short-circuited T-stub is loaded on the middle of the above BSF circuit structure. For demonstration, two filter examples with centre frequencies at 2 and 1.8 GHz are implemented with generation of four and five TPs, respectively, for theoretically calculated certification. Good agreement between simulated and measured results validates the design method. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FILTERS & filtration
*POLISH people
*SKIRTS
Subjects
Details
- Language :
- English
- ISSN :
- 17518725
- Volume :
- 13
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- IET Microwaves, Antennas & Propagation (Wiley-Blackwell)
- Publication Type :
- Academic Journal
- Accession number :
- 137495130
- Full Text :
- https://doi.org/10.1049/iet-map.2018.5745