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- Title
Compact QMSIW quasi-elliptic filter based on a novel electric coupling structure.
- Authors
Yanjia Shi; Kang Zhou; Chunxia Zhou; Wen Wu
- Abstract
A compact quarter-mode substrate integrated waveguide (QMSIW) quasi-elliptical bandpass filter is presented based on a novel interdigital- like capacitive coupling structure. This type of electric coupling structure is very suitable for the open boundary to implement the cross-coupling in classical quadruple topology. By this characteristic, a QMSIW quasi-elliptical filter working at 5 GHz is designed to demonstrate the superiority of this structure to the electric walls. Benefitting from the QMSIW technology, the wide-stopband feature is intrinsically achieved for the filter and the first spurious resonance is occurred at around two times the centre frequency.
- Subjects
SUBSTRATE integrated waveguides; BANDPASS filters; TOPOLOGY; RESONANCE; QUADRUPLE systems (Combinatorics)
- Publication
Electronics Letters (Wiley-Blackwell), 2017, Vol 53, Issue 23, p1528
- ISSN
0013-5194
- Publication type
Article
- DOI
10.1049/el.2017.3367