A novel circularly polarized gap-coupled wideband antenna with DGS for X/Ku-band applications

In this paper, a novel design of circularly polarized gap-coupled wideband microstrip antenna with defected ground structure is presented. This antenna consists of gap-coupled C-shaped radiators and orthogonally slits defect in the ground plane. The measured -10-dB impedance bandwidth (IBW) and 3-dB...

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Veröffentlicht in:	Electromagnetics 2019-04, Vol.39 (3), p.186-197
Hauptverfasser:	Verma, M. K., Kanaujia, Binod K., Saini, J. P., Saini, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Antennas Bandwidths Broadband Circular polarization defected ground plane Design defects Gap-coupled antenna Ground plane Microstrip antennas orthogonally slits Radiators Slits wideband antenna
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Beschreibung
Zusammenfassung:	In this paper, a novel design of circularly polarized gap-coupled wideband microstrip antenna with defected ground structure is presented. This antenna consists of gap-coupled C-shaped radiators and orthogonally slits defect in the ground plane. The measured -10-dB impedance bandwidth (IBW) and 3-dB axial ratio bandwidth (ARBW) of the proposed antenna are 57.33% (8.46-15.26 GHz) and 28.64% (9.78-13.05 GHz), respectively. The measured gain ranges from 3.83 to 3.76 dBi in entire 3-dB ARBW with a peak gain of 4.08 dBi. The prototype of the antenna is practically fabricated and tested.
ISSN:	0272-6343 1532-527X
DOI:	10.1080/02726343.2018.1558620