Journal ArticleDOI
A Wideband Circularly Polarized Cross-Dipole Antenna
TLDR
In this article, a wideband circularly polarized (CP) cross-dipole antenna fabricated on a double-layered printed circuit board (PCB) substrate for 2.45 GHz ISM band wireless communications is presented.Abstract:
This letter introduces a wideband circularly polarized (CP) cross-dipole antenna fabricated on a double-layered printed circuit board (PCB) substrate for 2.45-GHz ISM band wireless communications. Unlike conventional cross-dipole antennas, the proposed cross dipole is designed with wide open ends such that both impedance and axial-ratio (AR) bandwidths are enhanced. In addition, to excite the CP radiation effectively, a curved-delay line providing an orthogonal phase difference among the cross-dipole elements is attached at the corners of the sequentially rotated elements. By choosing a proper radius of the curved-delay line, a wide input impedance of the antenna can be realized. The antenna is center-fed by a 50- Ω coaxial cable and is placed above a square reflector to obtain a directional CP radiation pattern. With the advantage of centered feed, symmetric CP radiation patterns can be achieved across the entire operating bandwidth. Simulated and measured results confirm the proposed antenna produced good CP characteristics. An impedance bandwidth (for VSWR ≤ 2) of about 50.2% (1.99-3.22 GHz) and the 3-dB AR bandwidth of about 27% (2.30-2.9 GHz) around the center frequency of 2.45 GHz were measured. The antenna has an average CP gain of 6.2 dBic across the operating bandwidth and the maximum gain of 6.8 dBic at the center frequency. The size of antenna is 0.45λ×0.45λ×0.24λ.read more
Citations
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Journal ArticleDOI
A High-Efficiency Broadband Rectenna for Ambient Wireless Energy Harvesting
TL;DR: A novel broadband dual-polarized cross-dipole antenna is proposed which has embedded harmonic rejection property and can reject the second and third harmonics to further improve the rectenna efficiency.
Journal ArticleDOI
Crossed Dipole Loaded With Magneto-Electric Dipole for Wideband and Wide-Beam Circularly Polarized Radiation
Son Xuat Ta,Ikmo Park +1 more
TL;DR: In this article, a crossed dipole that is loaded with a magneto-electric dipole to produce the wideband and wide-beam circularly polarized radiation characteristics is proposed.
Journal ArticleDOI
Crossed Dipole Antennas: A review.
TL;DR: A review of the designs, characteristics, and applications of crossed dipole antennas along with the recent developments of single-feed circularly polarized (CP) configurations is presented in this paper.
Journal ArticleDOI
Broadband Circularly Polarized Patch Antenna With Parasitic Strips
TL;DR: In this paper, a patch antenna with parasitic strips is presented for wideband circular polarization, in which four parasitic strips are sequentially rotated and gap-coupled around the patch.
Journal ArticleDOI
Single-Feed Ultra-Wideband Circularly Polarized Antenna With Enhanced Front-to-Back Ratio
TL;DR: In this article, a single-feed ultra-wideband circularly polarized (CP) antenna with high front-to-back ratio (FBR) was proposed and integrated with the presented crossed dipoles.
References
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Patent
Wideband circularly polarized hybrid dielectric resonator antenna
TL;DR: In this paper, a dielectric resonator antenna consisting of a ground plane, operatively coupled with the ground plane and a substrate, having a feeding network consisting of four microstrip lines is presented.
Journal ArticleDOI
Broadband Circularly Polarized Crossed Dipole With Parasitic Loop Resonators and Its Arrays
TL;DR: In this article, a novel printed crossed dipole with broad axial ratio (AR) bandwidth is proposed, which consists of two dipoles crossed through a 90°phase delay line, which produces one minimum AR point due to the sequentially rotated configuration.
Journal ArticleDOI
Circularly polarised printed crossed dipole antennas with broadband axial ratio
TL;DR: In this article, a printed crossed dipole with broad circular polarisation (CP) was proposed to achieve broadband performance with single, 1 times 2, and 2 times 2 antennas with bandwidths of 15.6, 24.5, and 39.2% for 3 dB axial ratio, respectively.
Journal ArticleDOI
CP microstrip antenna with wide beamwidth for GPS band application
TL;DR: In this paper, a pyramidal ground structure and a partially enclosed flat conducting wall were used to increase the beam width of the circularly polarised (CP) radiation in the 1575 MHz GPS band.
Journal ArticleDOI
A Compact High Gain Antenna for Small Satellite Applications
TL;DR: In this paper, the development of a circularly-polarized compact high-gain antenna to be used for the European Student Earth Orbiter small satellite mission is described, where the antenna is realized stacking two coaxial shorted annular patches and placing the top one at half a wavelength from the lower one.
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