A novel miniaturized sext‐band bandstop filter based on tree‐shaped branches loaded asymmetric multimode resonators. Issue 8 (22nd April 2023)

• Record Type: Journal Article
• Authors: Luo, Jie; Zhao, Guangxu; Sheng, Zhongxi; Gao, Shanshan
• Is Part Of: Electronics letters. Volume 59:Issue 8(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2023-04-22
• Subjects: bandstop filters -- sext‐band -- split‐type multiple‐mode resonator -- tree‐shape branches; Electronics -- Periodicals; 621.381
• DOI: 10.1049/ell2.12801
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract: The working mechanism of suggested tunable bandstop filtered with asymmetrical multiple‐mode resonator equipped with tree‐shape branches is described in this letter. Because of the established degree of freedom, the suggested bandstop filters' (BSFs) centre frequencies may be modified based on the design approach. Meanwhile, the suggested BSFs have small dimensions and abrupt roll‐off skirts for transition bands. A technology demonstration filter with six stopbands placed at 1.91/2.38/3.54/5.19/5.79/6.85 GHz was constructed to verify the design and analyses. It is found that the measurement of a filter is consistent with the comparison of simulation data, which indicates that the proposed structure is an optional approach for BSF design. The filter proposed can be applied in the field of communication, information and coal mine automation. Abstract : This letter introduced the operating mechanism of proposed bandstop filters with asymmetric multiple‐mode resonator loaded with tree‐shape branches. Based on the design procedure, the centre frequencies of the proposed bandstop filters can be controlled due to the designed degree of freedom. Meanwhile, the proposed bandstop filters feature compact sizes and sharp roll‐off skirts for transition bands.