A 16‐element corporate‐feed multilayer SIW cavity‐backed slot antenna array. Issue 12 (22nd August 2017)

• Record Type: Journal Article
• Authors: Cai, Yang; Zhang, Yingsong; Qian, Zuping; Liu, Jie
• Is Part Of: IET microwaves, antennas & propagation. Volume 11:Issue 12(2017)
• Page Start: 1796
• Page End: 1802
• Publication Date: 2017-08-22
• Subjects: slot antenna arrays -- microwave antenna arrays -- antenna feeds -- substrate integrated waveguides -- antenna radiation patterns; cavity‐backed slot antenna array -- 16‐element corporate‐feed multilayer SIW -- substrate integrated waveguide -- SIW slot antenna -- multilayer cavitiy -- corporate‐feed method -- slot coupling -- array elements -- stable broadside radiation patterns -- bandwidth 22.9 GHz to 29.8 GHz; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2016.1078
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : In this study, a 16‐element multilayer substrate integrated waveguide (SIW) cavity‐backed slot antenna array is investigated. In order to broaden the operating bandwidth of SIW slot antenna, multilayer cavities with gradually decreased permittivity and expanded aperture sizes are loaded above the slot, which realises a smooth transition between SIW slot and free space. A corporate‐feed method using slot coupling is designed to excite the array elements. Measured results indicate that the fabricated array operates with 26.5% bandwidth ranging from 22.9 to 29.8 GHz. Besides, stable broadside radiation patterns are obtained across the operating band. Moreover, the proposed array can be easily expanded to a large‐scale array, which will greatly satisfy the requirements of sufficient bandwidth and high radiation performance in modern communication systems.