Broadband circularly polarised stacked antenna with sequential‐phase feed technique. Issue 8 (27th April 2020)

• Record Type: Journal Article
• Authors: Ding, Kang; Hong, Rentang; Guan, Dongfang; Liu, Li; Wu, Yanjie
• Is Part Of: IET microwaves, antennas & propagation. Volume 14:Issue 8(2020)
• Page Start: 779
• Page End: 784
• Publication Date: 2020-04-27
• Subjects: antenna feeds -- electromagnetic wave polarisation -- broadband antennas -- microwave antennas; square ring -- stacked patches -- broadband circularly polarised stacked antenna -- sequential‐phase feed technique -- gap‐coupled feed method -- broadband CP stacked antenna -- frequency 4.78 GHz to 6.71 GHz; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2019.0894
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : A broadband circularly polarised (CP) stacked antenna with a sequential‐phase feed technique is proposed in this study. The antenna contains a square ring that is encircled by four driven patches. The gap‐coupled feed method is used to transfer energy from the square ring to the driven patches. Moreover, four stacked patches are placed above the bottom layer to enhance the impedance and CP bandwidths. The measured results yield an impedance bandwidth of 33.6% (4.78–6.71 GHz) and a wide 3 dB axial ratio bandwidth of 19.4% (4.90–5.95 GHz) is obtained. The average gain is ∼9 dBi and the variation of gain is <1 dB within the CP bandwidth.