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access icon free Microstrip fed planar endfire circularly polarised antenna with enhanced bandwidth

A wideband planar endfire circularly polarised loop antenna is proposed. The antenna is fed by a microstrip line with a novel ground plane instead of a coaxial probe. The microstrip line part and the loop part generate the vertical polarisation and the horizontal polarisation, respectively. Two stubs added on the loop contribute to the bandwidth improvement. The proposed antenna achieves wide impedance bandwidth (|S11| < −10 dB) and wide 3-dB axial ratio bandwidth, both of which can cover the frequency range from 8.0 to 12.5 GHz (43.9%).

References

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      • 3. Zhang, W.-H., Tam, K.-W., Lu, W.-J.: ‘A novel planar end-fire circularly polarized dipole-aperture composite antenna’. 2016 21st Conf. on Microwave, Radar and Wireless Communication (MIKON), Krakow, Poland, May 2016.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2017.0237
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