Two-Pair Slots Inserted CP Patch Antenna for Wide Axial Ratio Beamwidth
Mrityunjoy Kumar Ray,Kaushik Mandal,Nasimuddin Nasimuddin,Ali Lalbakhsh,Raad Raad,Faisel Tubbal +5 more
TLDR
In this article, a low profile circularly polarized (CP) antenna with wide 3-dB axial ratio beamwidth (ARBW) is presented, where two-pair of parallel slots are etched on a circular patch and manifested as magnetic dipoles (MDs).Abstract:
In this article, a low profile circularly polarized (CP) antenna with wide 3-dB axial ratio beamwidth (ARBW) is presented. Two-pair of parallel slots are etched on a circular patch and manifested as magnetic dipoles (MDs). These narrow slots are arranged symmetrically about the axes, and one pair is orthogonal to another pair of slots. The philosophy of CP radiation across a wide angular range strongly depends on the spacing between the paired-dipoles, for example spacing of $0.22\lambda _{0}$ , two-orthogonal far-field radiated components become equal across a wide-angle. Moreover, this particular spacing between the paired-dipoles provides a symmetrical electric field distribution along the periphery of the patch, which ensures the broadside LHCP radiation with wide 3-dB ARBW of 228° and 214° at the plane of $\varphi = 0^{\circ }$ and $\varphi = 90^{\circ }$ , respectively. The measured results from the fabricated prototype exhibit good agreement with the simulated results. The antenna has impedance bandwidth (IBW) and CP bandwidth (CPBW) of 2.6% (64 MHz), and 0.9% (22 MHz), respectively. The broadside radiation holds antenna gain higher than 5 dBic across the entire CPBW.read more
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References
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Journal ArticleDOI
Multi-Band, Wide-Beam, Circularly Polarized, Crossed, Asymmetrically Barbed Dipole Antennas for GPS Applications
TL;DR: In this paper, a multi-band, circularly polarized (CP), wide beamwidth, and highly efficient antenna for use in global positioning systems (GPS) is presented.
Journal ArticleDOI
Dual-frequency dual circularly-polarised patch antenna with wide beamwidth
Xiulong Bao,Max J. Ammann +1 more
TL;DR: In this article, a dual-frequency dual-circularly polarized patch antenna with wide beamwidth is proposed, where the two-layer structure comprises circular patches with offset circular slots connected to rectangular slots.
Journal ArticleDOI
A New Technique to Design Circularly Polarized Microstrip Antenna by Fractal Defected Ground Structure
TL;DR: In this article, a new technique to design single-feed circularly polarized (CP) microstrip antenna is proposed, which is obtained by adjusting the dimension of the etched fractal defected ground structure (FDGS) in the ground plane.
Journal ArticleDOI
A Low-Profile Wide-Beamwidth Circularly-Polarized Antenna via Two Pairs of Parallel Dipoles in a Square Contour
Yu Luo,Qing-Xin Chu,Lei Zhu +2 more
TL;DR: In this article, a circularly polarized antenna with wide axial-ratio beamwidth is presented by placing two pairs of parallel dipoles in a square contour, and the two arms of its four dipoles are formed on the lower and upper interfaces of the substrate, and they are excited by a 1 to 4 probe-to-microstrip feeding network.
Journal ArticleDOI
A Broadband Folded Printed Quadrifilar Helical Antenna Employing a Novel Compact Planar Feeding Circuit
TL;DR: In this paper, a broadband printed quadrifilar helical antenna employing a novel compact feeding circuit is proposed, which presents an excellent axial ratio over a wide beamwidth, with a 29% bandwidth.
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