High selectivity band-stop filters using coaxial-fed substrate integrated waveguide
- Publisher:
- Wiley
- Publication Type:
- Journal Article
- Citation:
- Microwave and Optical Technology Letters, 2020, 62, (3), pp. 1209-1214
- Issue Date:
- 2020-03-01
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Filename | Description | Size | |||
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mop.32183.pdf | Published version | 2.55 MB |
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© 2019 Wiley Periodicals, Inc. A novel band-stop filter (BSF) using coaxial-fed slotted substrate integrated waveguide (SIW) is proposed in this article. The proposed BSF is designed using coaxial-fed line with extended probes penetrating through the substrate and connecting each other, instead of using the main transmission line to dispose the resonators. The SIW cavities perform the resonators excited by the probes to produce a stopband. Then, two BSFs with one and two SIW cavities are firstly designed, both of them have SIW cavity resonator modes and lower-band reflection zeroes. Then, two types of third-order BSFs using two cavity resonators and one slot resonator are presented, the high selectivity is achieved by the RZs at both sides of the stopband. Finally, one of the proposed third-order BSFs is fabricated and measured to verify the design method.
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