Circularly polarised patch array antenna based on reactive impedance surface. Issue 14 (17th September 2018)

• Record Type: Journal Article
• Authors: Zhang, Zhiyi; Chen, Wan; Fu, Jiahui; Li, Peng; Lv, Bo; Wang, Zhefei
• Is Part Of: IET microwaves, antennas & propagation. Volume 12:Issue 14(2018)
• Page Start: 2213
• Page End: 2217
• Publication Date: 2018-09-17
• Subjects: wireless LAN -- antenna radiation patterns -- electromagnetic wave polarisation -- broadband antennas -- microstrip antenna arrays -- antenna feeds -- impedance matching -- satellite communication; circularly polarised patch array antenna -- reactive impedance surface -- RIS layer -- CP antenna elements -- wideband impedance matching -- 4 × 4 patch array antenna -- diagonal corners -- rectangular slot -- wideband CP radiation -- axial ratio -- pure CP radiation pattern -- symmetry broadside pattern -- wide frequency band -- global satellite communication systems -- 5G Wi‐Fi application; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2018.5384
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : In this study, a circularly polarised (CP) patch array antenna based on reactive impedance surface (RIS) is presented. The proposed 4 × 4 patch array antenna possesses a RIS layer which is utilised to replace the conventional ground plane in order to enhance the bandwidth. Meanwhile, patches are cut with two diagonal corners and a rectangular slot for the fulfilment of wideband CP radiation and fed by a one‐to‐sixteen network simultaneously. Furthermore, in order to explain the effect of RIS in the axial ratio (AR), the CP antenna elements with (or without) RIS are designed. There is the same trend in simulated and measured results. Measured results show the proposed antenna exhibits good performances, such as wideband impedance matching, low AR, high gain. It is testified that pure CP radiation and symmetry broadside patterns are achieved in a wide frequency band, indicating the proposed antenna can exhibit significant application in global satellite communication systems and 5G Wi‐Fi application.