Quintuple-mode wideband filter based on a single metal cavity

A quintuple-mode wideband filter based on a single cavity is proposed. A pair of shorting pins is inserted into the cuboid cavity along the symmetry plane. The cavity filter is fed by a pair of coaxial cables and the inner conductor is inserted into the cavity with a circular disc at the end of the...

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Bibliographic Details
Published in:Electronics letters 2017-07, Vol.53 (15), p.1049-1050
Main Authors: Wong, Sai-Wai, Zheng, Bing-Long, Zhu, Lei, Chu, Qing-Xin
Format: Article
Language:English
Subjects:
band‐stop filters
circular disc
coaxial cables
cuboid cavity
frequency 5.8 GHz
inner conductor
inserted probe pair
insertion loss
lower‐stopbands
microwave filters
Microwave technology
out‐of‐band performance
quintuple‐mode wideband filter
shorting pin pair
single metal cavity
symmetry plane
transmission zeros
upper‐stopbands
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Summary:A quintuple-mode wideband filter based on a single cavity is proposed. A pair of shorting pins is inserted into the cuboid cavity along the symmetry plane. The cavity filter is fed by a pair of coaxial cables and the inner conductor is inserted into the cavity with a circular disc at the end of the probe. The pair of inserted probes and the pair of shorting pins excite five resonant modes in the cavity. The proposed filter has the central frequency at 5.8 GHz with a bandwidth of 70%. Meanwhile the wideband filter has transmission zeros at the lower and upper-stopbands to improve the selectivity and out-of-band performance. The measured insertion loss is
ISSN:0013-5194
1350-911X
1350-911X
DOI:10.1049/el.2017.1132