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A metasurface-based slit-loaded wideband circularly polarized crossed dipole antenna.
- Source :
-
International Journal of RF & Microwave Computer-Aided Engineering . Jan2018, Vol. 28 Issue 1, pn/a-1. 8p. 1 Color Photograph, 3 Diagrams, 2 Charts, 5 Graphs. - Publication Year :
- 2018
-
Abstract
- A metasurface-based low-profile crossed dipole antenna with wide circularly polarized bandwidth for 2.45 GHz ISM band wireless communications is proposed and fabricated in this article. Consisting of four slit-loaded rectangular patches, the double-sided printing crossed dipoles are fed by a pair of vacant-quarter printed rings which circularly polarized (CP) radiation could be generated. With slits loaded, by properly combining the fundamental mode of the two inverted L-shaped dipole, the slot mode and extra resonance generated by the AMC surface, a wideband circularly polarized operation can be obtained. After optimization, the final design with an overall size of 0.44λ0 × 0.44λ0 × 0.1448λ0 at 2.4 GHz had measured a 31.6% (2-2.75 GHz) impedance bandwidth and 3 dB axial ratio bandwidths of measured were 23.2% (2.1-2.65 GHz), respectively. In addition, the antenna performed a small gain variation (7.0-7.5 dBic) and a front-to-back ratio (FBR) of over 25 dB across the whole CP region. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10964290
- Volume :
- 28
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- International Journal of RF & Microwave Computer-Aided Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 126766695
- Full Text :
- https://doi.org/10.1002/mmce.21173