Open AccessCompact wideband SIW cavity‐backed slot antenna using triple resonance and hybrid mode
Author(s) -
Kang Le,
Wang Mei,
Zhang Ping,
Zhou Jin Zhu
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2020.1486
Subject(s) - wideband , offset (computer science) , materials science , slot antenna , antenna (radio) , resonance (particle physics) , multi band device , coaxial , optoelectronics , optics , physics , antenna measurement , electrical engineering , engineering , computer science , particle physics , programming language
A compact and wideband slot antenna backed by a square substrate integrated waveguide (SIW) cavity is presented. By exciting the dual‐slotted SIW cavity with an offset coaxial feed, a transverse electric (TE) 110 resonant mode along with two hybrid modes as combinations of TE 110 and TE 120 resonances can be generated within a close range. The triple resonances contribute to producing a wideband response while maintaining a compact antenna structure. An antenna prototype with a total size of 0.49 λ 0 × 0.49 λ 0 × 0.16 λ 0 is manufactured and experimentally tested. Measures results show that an operating band of about 33.0% is obtained. Meanwhile, it also exhibits stable unidirectional patterns and moderate gains over the whole band.